Basic Information

Affiliated programs (koza)

• Graduate School of Energy Science, エネルギー応用科学専攻 高品位エネルギー応用講座, 准教授

Professional Memberships

• Atomic Energy Society of Japan
• The Japan Society of Infrared Physics and Technology
• The Physical Society of Japan
• The Japanese Society of Synchrotron Radiation Research
• Particle Accelerator Society of Japan

Research History

• From Jun. 2023, To Present

  Institute of Advanced Energy, Kyoto University, Associate Professor
• From Jul. 2011, To May 2023

  Kyoto University, Institute of Advanced Energy, Assistant Professor
• From Apr. 2009, To Jun. 2011

  Institute for Molecular Science, UVSOR facility, Assistant Professor

ID,URL

• J-Global ID

  201401002271581301

• External link

  https://sites.google.com/site/heishunzenhp/

Website(s) (URL(s))

• https://sites.google.com/site/heishunzenhp/

researchmap URL

• https://researchmap.jp/heishunzen

Research

Research Topics, Overview of the research

• Research Topics

  Development of High Brightness Electron Source, Development of Free Electron Laser, Development of Coherent Radiation Source, Stabilization of Electron Accelerator

Research Interests

• Laser Compton Scattering Gamma Ray
• Coherent Radiation
• Electron Accelerator
• Free Electron Laser

Research Areas

• Energy, Quantum beam science

Papers

• Infrared Free-Electron Laser: A Versatile Molecular Cutter for Analyzing Solid-State Biomacromolecules

  Takayasu Kawasaki; Atsushi Nagase; Ken Hayakawa; Fumitsuna Teshima; Kiyohisa Tanaka; Heishun Zen; Fumio Shishikura; Norihiro Sei; Takeshi Sakai; Yasushi Hayakawa

  ACS Omega, 02 Apr. 2025, Peer-reviewed

  
• Measurement of x-ray bremsstrahlung radiation from high energy electrons by stochastic acceleration in Heliotron J

  R. Yamato; S. Kobayashi; T. Fujita; K. Nagaoka; K. Nagasaki; S. Inagaki; T. Kawate; H. Ohgaki; T. Kii; H. Zen; S. Kado; T. Minami; H. Okada; S. Ohshima; S. Konoshima; T. Mizuuchi; Y. Mototake

  Review of Scientific Instruments, 26 Mar. 2025, Peer-reviewed

  
• Relationship between Ce3+ 5d1 level, conduction-band bottom, and shallow electron trap level in Gd3Ga5O12:Ce and Gd3Al1Ga4O12:Ce crystals studied via pump-probe absorption spectroscopy

  Mamoru Kitaura; Heishun Zen; Shinta Watanabe; Hirokazu Masai; Kei Kamada; Kyoung-Jin Kim; Akira Yoshikawa; Jumpei Ueda

  Optical Materials: X, Feb. 2025, Peer-reviewed, Invited

  
• Temporal evolution of electron-bunch length in macropulse of resonator-type free-electron lasers

  Norihiro Sei; Heishun Zen; Hideaki Ohgaki; Ryoichi Hajima

  iScience, Dec. 2024, Peer-reviewed

  
• A van der Waals porous crystal featuring conformational flexibility and permanent porosity for ultrafast water release

  Kentaro Maejima; Heishun Zen; Hiroyasu Sato; Eiji Nishibori; Tomoya Enjou; Youhei Takeda; Satoshi Minakata; Eri Hisamura; Ken Albrecht; Yuka Ikemoto; Irene Badía-Domínguez; Juan Sánchez-Rincón; M. Carmen Ruiz Delgado; Yohei Yamamoto; Hiroshi Yamagishi

  Communications Chemistry, 30 Nov. 2024, Peer-reviewed

  
• Measurement of temporal evolution of antiferromagnetic domain change in nickel oxide driven by 2TO phonon mode excitation via pump-probe experiment

  Ju Yoon Hnin Bo; Heishun Zen; Hideaki Ohgaki

  Japanese Journal of Applied Physics, 01 Nov. 2024, Peer-reviewed

  
• Observation of Selective Excitation of Raman Inactive Phonon Mode of Strontium Titanate Through Anti-Stokes Hyper-Raman Scattering Process

  Ju Yoon Hnin Bo; Heishun Zen; Kyohei Yoshida; Kan Hachiya; Rei Akasegawa; Hideaki Ohgaki

  Journal of Infrared, Millimeter, and Terahertz Waves, 28 Sep. 2024, Peer-reviewed

  
• Circular polarization measurement for individual gamma rays in capture reactions with intense pulsed neutrons

  Shunsuke Endo; Ryota Abe; Hiroyuki Fujioka; Takashi Ino; Osamu Iwamoto; Nobuyuki Iwamoto; Shiori Kawamura; Atsushi Kimura; Masaaki Kitaguchi; Ryuju Kobayashi; Shoji Nakamura; Takayuki Oku; Takuya Okudaira; Mao Okuizumi; Mohamed Omer; Gerard Rovira; Tatsushi Shima; Hirohiko M. Shimizu; Toshiyuki Shizuma; Yoshitaka Taira; Shusuke Takada; Shingo Takahashi; Hiromoto Yoshikawa; Tamaki Yoshioka; Heishun Zen

  The European Physical Journal A, 28 Aug. 2024, Peer-reviewed

  
• Investigating structural property of human hair by using infrared free electron lasers

  Takayasu Kawasaki; Atsushi Nagase; Ken Hayakawa; Fumitsuna Teshima; Kiyohisa Tanaka; Heishun Zen; Akinori Irizawa; Takeshi Sakai; Yasushi Hayakawa

  Discover Applied Sciences, 22 Jul. 2024, Peer-reviewed

  
• Upgrade of Mid-Infrared Free Electron Laser at Kyoto University by Long Macro-pulse Photocathode Operation of the Existing RF Gun

  Heishun Zen; Hideaki Ohgaki; Ryoichi Hajima

  International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz, 08 Nov. 2020

  
• The influence of initial current density distribution on the emittance reduction

  H. Yamashita; T. Kii; K. Masuda; K. Nagasaki; T. Nogi; H. Ohgaki; K. Torgasin; H. Zen

  IPAC 2017 - Proceedings of the 8th International Particle Accelerator Conference, 01 Jul. 2017

  
• Synchronous Pumping Terahertz Parametric Oscillator Driven by Amplified Picosecond Mode-locked Laser

  T. Naganawa; H. Zen; T. Kii; H. Ohgaki

  International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz, 01 Sep. 2019

  
• Study on second harmonic generation in SiC using infrared FEL

  S. Tagiri; H. Zen; T. Kii; H. Ohgaki

  Proceedings of the 38th International Free-Electron Laser Conference, FEL 2017, 2017

  
• Development of Mid-Infrared photoacoustic spectroscopy system for solid samples at Kyoto University free electron laser facility

  J. Okumura; H. Zen; T. Kii; H. Ohgaki

  Proceedings of the 38th International Free-Electron Laser Conference, FEL 2017, 2017

  
• Pulse duration measurement of PICO-second DUV photocathode driving laser by autocorrelation technique using two-photon absorption in bulk material

  H. Zen; T. Nakajima; T. Kii; K. Masuda; H. Ohgaki

  Proceedings of the 38th International Free-Electron Laser Conference, FEL 2017, 2017

  
• Development of compact THz coherent undulator radiation source at Kyoto University

  Siriwan Krainara; Heishun Zen; Toshiteru Kii; Hideaki Ohgaki; Sikharin Suphakul

  Proceedings of the 38th International Free-Electron Laser Conference, FEL 2017, 2017

  
• Coaxial quarter wavelength impedance converter for coupling control of triode cavity

  K. Torgasin; H. Zen; K. Morita; S. Suphakul; T. Kii; K. Nagasaki; K. Masuda; H. Ohgaki

  25th Russian Particle Accelerator Conference, RuPAC 2016, 2016

  
• Beam characterization of mid-infrared free electron laser to drive high-harmonic generation

  Keigo Kawase; Heishun Zen; Takeshi Sakai; Yasushi Hayakawa; Hideaki Ohgaki; Ryoichi Hajima

  Japanese Journal of Applied Physics, 01 Jul. 2024, Peer-reviewed

  
• Breakdown of argon by a train of high-repetition long-wave-infrared pulses from a free-electron laser oscillator

  Ryoichi Hajima; Keigo Kawase; James K. Koga; Heishun Zen; Hideaki Ohgaki

  Optics Express, 05 Jun. 2024, Peer-reviewed

  
• Infrared free electron laser-irradiated polyleucine does not exert aggregates-induced aversive effects on mouse brain

  Ayaka Mori; Taichi Shiroishi; Jun Fujioka; Takashi Nakajima; Shinichi Mitsui; Hinaho Suginoma; Yohei Kakuta; Heishun Zen; Kazuhiro Nakamura

  Brain Disorders, Jun. 2024, Peer-reviewed

  
• Morphological study of depth-controlled high quality holes and lines fabricated on a metal substrate with a thin metal film by picosecond laser pulses

  Keisuke Sota; Kota Ando; Heishun Zen; Toshiteru Kii; Hideaki Ohgaki; Takashi Nakajima

  Optics & Laser Technology, Aug. 2024, Peer-reviewed

  
• Light Source Developments at UVSOR BL1U

  M. Katoh; H. Ota; J. Yamazaki; K. Hayashi; Y. Okano; E. Salehi; Y. Taira; A. Mano; M. Fujimoto; Y. Takashima; M. Hosaka; F. Sakamoto; T. Kaneyasu; H. Zen

  Journal of Physics: Conference Series, 01 Jan. 2024, Peer-reviewed

  
• Carrier-envelope phase stabilization in FEL oscillators

  R Hajima; K Kawase; H Zen; H Ohgaki

  Journal of Physics: Conference Series, 01 Jan. 2024, Peer-reviewed

  
• Nonlinear compression of naturally down-chirped superradiance pulses from a free-electron laser oscillator by thick germanium plates

  Heishun Zen; Ryoichi Hajima; Hideaki Ohgaki

  Optics Express, 19 Nov. 2023, Peer-reviewed, Lead author, Corresponding author

  
• Light source developments at UVSOR BL1U

  M. Katoh; H. Ota; J. Yamazaki; K. Hayashi; Y. Okano; E. Salehi; Y. Taira; A. Mano; M. Fujimoto; Y. Takashima; M. Hosaka; F. Sakamoto; T. Kaneyasu; H. Zen

  JACoW Publishing, Sep. 2023, Peer-reviewed

  
• Formation of Periodic Surface Structures on Semiconductors under Mid-Infrared Free-Electron Laser Irradiation

  Shin-ichiro Masuno; Masaki Hashida; Heishun Zen

  IEEJ Transactions on Fundamentals and Materials, 01 Oct. 2023, Peer-reviewed

  
• Generation of flat-laser Compton scattering γ-ray beam

  Hideaki Ohgaki; Khaled Ali; Toshiteru Kii; Heishun Zen; Takehito Hayakawa; Toshiyuki Shizuma; Masaki Fujimoto; Yoshitaka Taira

  Physical Review Accelerators and Beams, 22 Sep. 2023, Peer-reviewed

  
• Dissociation process of polyalanine aggregates by free electron laser irradiation

  Hisashi Okumura; Satoru G. Itoh; Heishun Zen; Kazuhiro Nakamura

  PLOS ONE, 08 Sep. 2023, Peer-reviewed

  
• Selective excitation of LO3 phonon mode of SrTiO₃

  Ju Yoon Hnin Bo; H. Zen; R. Akasegawa; K. Hachiya; K. Yoshida; H. Ohgaki

  2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz), 28 Aug. 2022

  
• Study of crystalline scintillator response with development of single-electron beam of 2–6 MeV at KU-FEL

  Yusuke Uozumi; Toshimasa Furuta; Yuji Yamaguchi; Heishun Zen; Toshiteru Kii; Hideaki Ohgaki; Elena Velicheva; Vladimir Kalinnikov; Zviadi Tsamalaidze; Petr Evtoukhovitch

  Journal of Nuclear Science and Technology, 07 Feb. 2023, Peer-reviewed

  
• The Particle-Tracking Simulation of a New Photocathode RF Gun in the Free-Electron Laser Facility, KU-FEL

  Yuhao Zhao; Heishun Zen; Hideaki Ohgaki

  Particles, 06 Jun. 2023, Peer-reviewed, Invited, Corresponding author

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• Measurement of the spatial polarization distribution of circularly polarized gamma rays produced by inverse Compton scattering

  Yoshitaka Taira; Shunsuke Endo; Shiori Kawamura; Taro Nambu; Mao Okuizumi; Toshiyuki Shizuma; Mohamed Omer; Heishun Zen; Yasuaki Okano; Masaaki Kitaguchi

  Physical Review A, 02 Jun. 2023, Peer-reviewed

  
• Full characterization of superradiant pulses generated from a free-electron laser oscillator

  Heishun Zen; Ryoichi Hajima; Hideaki Ohgaki

  Scientific Reports, 18 Apr. 2023, Peer-reviewed, Lead author, Corresponding author

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• Discussion for formation mechanisms of periodic surface structures on semiconductors irradiated by mid-infrared free electron laser

  Tanaka Yohei; Hosokawa Chikai; Hashida Masaki; Zen Heishun; Nagashima Takeshi; Ozaki Norimasa; Inoue Shunsuke; Sakabe Shuji

  JSAP Annual Meetings Extended Abstracts, 26 Aug. 2020

  
• Conditions for fine LIPSS formation induced with mid-infrared FEL for semiconductors – Thresholds of LIPSS formation and melting -

  Tanaka Yohei; Hosokawa Chikai; Hashida Masaki; Zen Heishun; Nagashima Takeshi; Ozaki Norimasa; Inoue Shunsuke; Sakabe Shuji

  JSAP Annual Meetings Extended Abstracts, 28 Feb. 2020

  
• Production of electron beam with constant energy by controlling input power into a thermionic RF gun

  Okawachi N; Nakano M; Zen H; Kii T; Masuda K; Ohgaki H; Yoshikawa K; Yamazaki T

  28th International Free Electron Laser Conference, FEL 2006, 2006, Peer-reviewed

  
• Deformation of an electron bunch caused by free-electron lasers

  Norihiro Sei; Heishun Zen; Hideaki Ohgaki

  Physica Scripta, 24 Jan. 2023, Peer-reviewed

  
• Mid-infrared free electron laser induced periodic surface structures on semiconductors

  Yohei Tanaka; Masaki Hashida; Chikai Hosokawa; Heishun Zen; Takeshi Nagashima; Norimasa Ozaki; Shunsuke Inoue; Shuji Sakabe

  Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXVI, 05 Mar. 2021

  
• Crystallinity in periodic nanostructure surface on Si substrates induced by near- and mid-infrared femtosecond laser irradiation

  Reina Miyagawa; Daisuke Kamibayashi; Hirotaka Nakamura; Masaki Hashida; Heishun Zen; Toshihiro Somekawa; Takeshi Matsuoka; Hiroyuki Ogura; Daisuke Sagae; Yusuke Seto; Takahisa Shobu; Aki Tominaga; Osamu Eryu; Norimasa Ozaki

  Scientific Reports, 05 Dec. 2022, Peer-reviewed

  
• Mode-Selective Phonon Excitation of SrTiO₃ by MIR-FEL with Anti-Stokes Hyper-Raman Scattering Spectroscopy

  Ju Yoon Hnin Bo; H. Zen; R. Akasegawa; K. Hachiya; K. Yoshida; H. Ohgaki

  2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz), 29 Aug. 2021

  
• Photo‐Modification of Melanin by a Mid‐infrared Free‐electron Laser

  Takayasu Kawasaki; Aomi Sato; Yuki Tominaga; You Suzuki; Takahiro Oyama; Makoto Tadokoro; Koichi Tsukiyama; Kiyoshi Nokihara; Heishun Zen

  PHOTOCHEMISTRY AND PHOTOBIOLOGY, Jul. 2019, Peer-reviewed

  
• Detection of Nuclear Resonance Fluorescence Excitations in 235U with LaBr3 (Ce) Scintillating Detectors

  Omer Mohamed; Negm Hani; Zen Heishun; Hori Toshitada; Kii Toshiteru; Masuda Kai; Ohgaki Hideaki; Hajima Ryoichi; Hayakawa Takehito; Shizuma Toshiyuki; Daito Izuru; Fujiwara Mamoru; Kikuzawa Nobuhiro

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2012

  
• Degradation of Lignin by Infrared Free Electron Laser

  Takayasu Kawasaki; Heishun Zen; Takeshi Sakai; Yoske Sumitomo; Kyoko Nogami; Ken Hayakawa; Toyonari Yaji; Toshiaki Ohta; Takashi Nagata; Yasushi Hayakawa

  Polymers, 14 Jun. 2022, Peer-reviewed

  
• Application of Infrared-Free Electron Laser for Amyloidosis Therapy

  Takayasu Kawasaki; Heishun Zen; Akinori Irizawa; Koichi Tsukiyama; Kazuhiro Nakamura

  2019 44TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ), 2019

  
• Present Status of Infrared FEL Facility at Kyoto University

  Heishun Zen; Siriwan Krainara; Shuya Chatani; Toshiteru Kii; Kai Masuda; Hideaki Ohgaki

  International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz, 25 Oct. 2018, Peer-reviewed

  
• Comprehensive simulation study on CT isotope imaging beyond the experiment on the 208Pb based on nuclear resonance fluorescence

  Hani Negm; Heishun Zen; Hideaki Ohgaki

  Journal of Nuclear Science and Technology, 06 Jan. 2022, Peer-reviewed

  
• Fusion Visualization Technique to Improve a Three-Dimensional Isotope-Selective CT Image Based on Nuclear Resonance Fluorescence with a Gamma-CT Image

  Khaled Ali; Heishun Zen; Hideaki Ohgaki; Toshiteru Kii; Takehito Hayakawa; Toshiyuki Shizuma; Masahiro Katoh; Yoshitaka Taira; Masaki Fujimoto; Hiroyuki Toyokawa

  Applied Sciences, 14 Dec. 2021, Peer-reviewed

  
• Study of the origin of the complex beam profile of a hole-coupled free electron laser oscillator

  Heishun Zen; Hideaki Ohgaki

  Journal of the Optical Society of America A, 01 Nov. 2021, Peer-reviewed, Lead author, Corresponding author

  
• Mode-selective excitation of an infrared-inactive phonon mode in diamond using mid-infrared free electron laser

  Rei Akasegawa; Heishun Zen; Kan Hachiya; Kyohei Yoshida; Takuya Goto; Takashi Sagawa; Hideaki Ohgaki

  Japanese Journal of Applied Physics, 01 Oct. 2021, Peer-reviewed

  
• Three-Dimensional Nondestructive Isotope-Selective Tomographic Imaging of ²⁰⁸Pb Distribution via Nuclear Resonance Fluorescence

  Khaled Ali; Heishun Zen; Hideaki Ohgaki; Toshiteru Kii; Takehito Hayakawa; Toshiyuki Shizuma; Hiroyuki Toyokawa; Masaki Fujimoto; Yoshitaka Taira; Masahiro Katoh

  Applied Sciences, Apr. 2021, Peer-reviewed

  
• Application of mid-infrared free-electron laser for structural analysis of biological materials

  Takayasu Kawasaki; Heishun Zen; Kento Ozaki; Hironari Yamada; Kazumasa Wakamatsu; Shosuke Ito

  Journal of Synchrotron Radiation, 01 Jan. 2021, Peer-reviewed

  
• Record high extraction efficiency of free electron laser oscillator

  Heishun Zen; Hideaki Ohgaki; Ryoichi Hajima

  Applied Physics Express, 01 Oct. 2020, Peer-reviewed, Lead author, Corresponding author

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• Selective Isotope CT Imaging Based on Nuclear Resonance Fluorescence Transmission Method

  Khaled Ali; Hideaki Ohgaki; Heishun Zen; Toshiteru Kii; Takehito Hayakawa; Toshiyuki Shizuma; Hiroyuki Toyokawa; Yoshitaka Taira; Violeta Iancu; Gabriel Turturica; Calin Alexandru Ur; Masaki Fujimoto; Masahiro Katoh

  IEEE Transactions on Nuclear Science, Aug. 2020, Peer-reviewed

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• Visualizing cation vacancies in Ce:Gd3Al2Ga3O12 scintillators by gamma-ray-induced positron annihilation lifetime spectroscopy

  Kosuke Fujimori; Mamoru Kitaura; Yoshitaka Taira; Masaki Fujimoto; Heishun Zen; Shinta Watanabe; Kei Kamada; Yasuaki Okano; Masahiro Katoh; Masahito Hosaka; Jun-ichiro Yamazaki; Tetsuya Hirade; Yoshinori Kobayashi; Akimasa Ohnishi

  Applied Physics Express, 01 Aug. 2020, Peer-reviewed

  
• Cellulose Degradation by Infrared Free Electron Laser

  Takayasu Kawasaki; Takeshi Sakai; Heishun Zen; Yoske Sumitomo; Kyoko Nogami; Ken Hayakawa; Toyonari Yaji; Toshiaki Ohta; Koichi Tsukiyama; Yasushi Hayakawa

  Energy & Fuels, 16 Jul. 2020, Peer-reviewed

  
• High-extraction-efficiency operation of a midinfrared free electron laser enabled by dynamic cavity desynchronization

  Heishun Zen; Hideaki Ohgaki; Ryoichi Hajima

  Physical Review Accelerators and Beams, 06 Jul. 2020, Peer-reviewed, Lead author, Corresponding author

  
• HgCdTe detector saturation using infrared free electron laser and infrared synchrotron radiation

  Yuka Ikemoto; Heishun Zen

  Infrared Physics & Technology, May 2020, Peer-reviewed

  
• Demonstration of variable polarized coherent terahertz source

  Shigeru Kashiwagi; Hirotoshi Saito; Fujio Hinode; Yuto Ishizuki; Ken Kanomata; Sadao Miura; Nozomu Morita; Toshiya Muto; Ikurou Nagasawa; Ken-ichi Nanbu; Koutaro Shibata; Ken Takahashi; Kento Terada; Hiroki Yamada; Hiroyuki Hama; Heishun Zen; Akinori Irizawa

  Infrared Physics & Technology, May 2020, Peer-reviewed

  
• Two-photon selective excitation of phonon-mode in diamond using mid-infrared free-electron laser

  Oji Sato; Kyohei Yoshida; Heishun Zen; Kan Hachiya; Takuya Goto; Takashi Sagawa; Hideaki Ohgaki

  Physics Letters, Section A: General, Atomic and Solid State Physics, Apr. 2020, Peer-reviewed

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• Research and Development of Attosecond VUV and X-ray Sources Driven by Mid-Infrared FEL Oscillators

  Ryoichi Hajima; Ryoji Nagai; Keigo Kawase; Hideaki Ohgaki; Heishun Zen; Yasushi Hayakawa; Takeshi Sakai; Yoske Sumitomo; Miho Shimada; Tsukasa Miyajima

  OSA High-brightness Sources and Light-driven Interactions Congress 2020 (EUVXRAY, HILAS, MICS), 2020

  
• Issues on the transverse phase space tomography

  H. Zen; H. Ohgaki; K. Masuda; T. Fukui; K. Kusukame; Y. Nakai; T. Kii; T. Yamazaki; K. Yoshikawa

  Proceedings of NANOBEAM 2005, 36th ICFA Advanced Beam Dynamics Workshop, 2020, Peer-reviewed

  
• Coherent edge radiation sources in Linac-based infrared free-electron laser facilities

  N. Sei; H. Ogawa; T. Tanaka; Y. Hayakawa; T. Sakai; Y. Sumitomo; K. Hayakawa; K. Nogami; H. Ohgaki; H. Zen

  Proceedings of the 29th Linear Accelerator Conference, LINAC 2018, 2020

  
• Experimental Demonstration of Selective Isotope CT-Imaging Based on Nuclear Resonance Fluorescence Absorption Method

  Khaled Ali; Hideaki Ohgaki; Heishun Zen; Toshiteru Kii; Takehito Hayakawa; Toshiyuki Shizuma; Hiroyuki Toyokawa; Yoshitaka Taira; Violeta Iancu; Gabriel Turturica; Calin Alexandru Ur; Masaki Fujimoto; Masahiro Katoh

  2019 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2019, Oct. 2019, Peer-reviewed

  
• Properties of THz coherent undulator radiation generated from a compact accelerator source at Kyoto University

  Siriwan Krainara; Heishun Zen; Shuya Chatani; Toshiteru Kii; Hideaki Ohgaki

  Review of Scientific Instruments, 01 Oct. 2019, Peer-reviewed

  
• Upgrade projects of mid-infrared free electron laser at kyoto university for high peak power and ultra-short pulse operation

  Heishun Zen; Hideaki Ohgaki; Ryoichi Hajima

  International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz, Sep. 2019

  
• Study on anomalous photoemission of LaB6 at high temperatures

  Torgasin K; Morita K; Zen H; Masuda K; Bakr M; Nagasaki K; Kii T; Ohgaki H

  PHYSICA SCRIPTA, Jul. 2019, Peer-reviewed

  
• Study on a long-life photocathode with an CsBr protective layer for an rf electron gun

  Ono Hiroya; Miyamatsu Junya; Tamba Tomoaki; Sakaue Kazuyuki; Washio Masakazu; Iijima Hokuto; Zen Heishun

  JAPANESE JOURNAL OF APPLIED PHYSICS, 01 Jun. 2019, Peer-reviewed

  
• Research of Coherent Edge Radiation Generated by Electron Beams Oscillating Free-Electron Lasers

  N. Sei; H. Ogawa; K. Hahayaka; Y. Hayakawa; K. Nogami; T. Sakai; Y. Sumitomo; Y. Takahashi; T. Tanaka; H. Ohgaki; H. Zen

  IPAC2019 TUPRB039, 19 May 2019

  
• Thermally Assisted Photoemission of CeB6 at High Temperatures

  Konstantin Torgasin; Toshiteru Kii; Kenichi Morita; Kazunobu Nagasaki; Heishun Zen; Hideaki Ohgaki; Kai Masuda

  2019 International Vacuum Electronics Conference, IVEC 2019, Apr. 2019, Peer-reviewed

  
• Demonstration of tomographic imaging of isotope distribution by nuclear resonance fluorescence

  Heishun Zen; Hideaki Ohgaki; Yoshitaka Taira; Takehito Hayakawa; Toshiyuki Shizuma; Izuru Daito; Jun ichiro Yamazaki; Toshiteru Kii; Hiroyuki Toyokawa; Masahiro Katoh

  AIP Advances, 01 Mar. 2019, Peer-reviewed

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• Investigation on conversion pathways in degradative solvent extraction of rice straw by using liquid membrane-FTIR spectroscopy

  Watcharakorn Ketren; Heishun Zen; Ryuichi Ashida; Toshiteru Kii; Hideaki Ohgaki

  Energies, 07 Feb. 2019, Peer-reviewed

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• Application of infrared Fel oscillators for producing isolated attosecond X-ray pulses via high-harmonic generation in rare gases

  R. Hajima; R. Nagai; K. Kawase; H. Ohgaki; H. Zen; Y. Hayakawa; T. Sakai; Y. Sumitomo; M. Shimada; T. Miyajima

  Proceedings of the 39th International Free-Electron Laser Conference, FEL 2019, 2019, Invited

  
• Measurement of bunch length evolution in electron beam macropulse of S-band linac using coherent edge radiation

  Norihiro Sei; Heishun Zen; Hideaki Ohgaki

  Physics Letters A, Jan. 2019, Peer-reviewed

  
• Responses of PWO, LaBr3:Ce, and LYSO:Ce scintillators to single-electron hits of 5–40 MeV at KU-FEL

  Yusuke Uozumi; Yuji Yamaguchi; Motoharu Fujii; Heishun Zen; Toshiteru Kii; Hideaki Ohgaki; Zviadi Tsamalaidze; Petr Evtoukhovitch

  Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 11 Dec. 2018, Peer-reviewed

  
• Investigation of Bunch Compressor and Compressed Electron Beam Characteristics by Coherent Transition Radiation

  Sikharin Suphakul; Heishun Zen; Toshiteru Kii; Hideaki Ohgaki

  Particles, Dec. 2018, Peer-reviewed

  
• Manipulation of Laser Distribution to Mitigate the Space-Charge Effect for Improving the Performance of a THz Coherent Undulator Radiation Source

  S. Krainara; S. Chatani; H. Zen; T. Kii; H. Ohgaki

  Particles, Nov. 2018, Peer-reviewed

  
• Study of the saturation of radiation energy caused by the space charge effect in a compact THz coherent radiation source

  S. Krainara; S. Chatani; H. Zen; T. Kii; H. Ohgaki

  Journal of Physics: Conference Series, 05 Oct. 2018, Peer-reviewed

  
• Real-time observation of structural change in semi-crystalline polymer films through mid R transmission spectroscopy: determination of instantaneous film temperature during recrystallization

  Sandeep Kumar Maurya; Takashi Nakajima; Keisuke Mizobata; Heishun Zen; Toshiteru Kii; Hideaki Ohgaki

  OPTICS EXPRESS, Aug. 2018, Peer-reviewed

  
• Generation of 1-MeV Quasi-Monochromatic Gamma-Rays for Precise Measurement of Delbrück Scattering by Laser Compton Scattering

  H. Zen; T. Hayakawa; E. Salehi; M. Fujimoto; T. Shizuma; J.K. Koga; T. Kii; M. Katoh; H. Ohgaki

  Journal of Physics, 2018, Peer-reviewed

  
• Mid-Infrared Free-Electron Laser-Evoked Discharge of Crayfish Compound Eyes

  F. Shishikura; H. Zen; K. Hayakawa; Y. Komatsuzaki; Y. Hayakawa; T. Sakai; T. Kii; H. Ohgaki

  bioRxiv, 2018, Peer-reviewed

  
• Visualizing hidden electron trap levels in Gd3Al2Ga3O12:Ce crystals using a mid-infrared free-electron laser

  Mamoru Kitaura; Heishun Zen; Kei Kamada; Shunsuke Kurosawa; Shinta Watanabe; Akimasa Ohnishi; Kazuhiko Hara

  APPLIED PHYSICS LETTERS, Jan. 2018, Peer-reviewed

  
• Properties of quarter-wavelength coaxial cavity for triode-type thermionic RF gun (vol 56, 096701, 2017)

  Konstantin Torgasin; Kenta Mishima; Heishun Zen; Kyohei Yoshida; Hani Negm; Mohamed Omer; Toshiteru Kii; Kazunobu Nagasaki; Kai Masuda; Hideaki Ohgaki

  JAPANESE JOURNAL OF APPLIED PHYSICS, Nov. 2017, Peer-reviewed

  
• Properties of quarter-wavelength coaxial cavity for triode-type thermionic RF gun

  Konstantin Torgasin; Kenta Mishima; Heishun Zen; Kohei Yoshida; Hani Negm; Muhamed Omer; Toshiteru Kii; Kazunobu Nagasaki; Kai Masuda; Hideaki Ohgaki

  JAPANESE JOURNAL OF APPLIED PHYSICS, Sep. 2017, Peer-reviewed

  
• Nondestructive Inspection System for Special Nuclear Material Using Inertial Electrostatic Confinement Fusion Neutrons and Laser Compton Scattering Gamma-Rays

  H. Ohgaki; I. Daito; H. Zen; T. Kii; K. Masuda; T. Misawa; R. Hajima; T. Hayakawa; T. Shizuma; M. Kando; S. Fujimoto

  IEEE Transactions on Nuclear Science, Jul. 2017, Peer-reviewed

  
• Thermally assisted photoemission effect on CeB6 and LaB6 for application as photocathodes

  K. Torgasin; K. Morita; H. Zen; K. Masuda; T. Katsurayama; T. Murata; S. Suphakul; H. Yamashita; T. Nogi; T. Kii; K. Nagasaki; H. Ohgaki

  PHYSICAL REVIEW ACCELERATORS AND BEAMS, Jul. 2017, Peer-reviewed

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• Mode-selective phonon excitation in gallium nitride using mid-infrared free-electron laser

  Muneyuki Kagaya; Kyohei Yoshida; Heishun Zen; Kan Hachiya; Takashi Sagawa; Hideaki Ohgaki

  JAPANESE JOURNAL OF APPLIED PHYSICS, Feb. 2017, Peer-reviewed

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• Measurement of Electron-bunch Length Using Coherent Radiation in Infrared Free-electron Laser Facilities

  N. Sei; H. Ogawa; T. Tanaka; Y. Hayakawa; T. Sakai; K. Hayakawa; K. Nogami; H. Ohgaki; H. Zen

  Proceedings of IPAC2017 (May 14-19, 2017, Copenhagen, Denmark), 2017

  
• Development of intense terahertz coherent synchrotron radiation at KU-FEL

  Norihiro Sei; Heishun Zen; Hideaki Ohgaki

  NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Oct. 2016, Peer-reviewed

  
• Study on NRF-CT Imaging by Laser Compton Backscattering Gamma-rays in UVSOR

  H. Ohgaki; I. Daito; T. Kii; H. Zen; T. Hayakawa; T. Shizuma; M. Katoh; J. Yamazaki; Y. Taira; H. Toyokawa

  Proceedings of IPAC2016, 01 Jan. 2016

  
• GENERATION OF SHORT BUNCH ELECTRON BEAM FROM COMPACT ACCELERATOR FOR TERAHERTZ RADIATION

  S. Suphakul; T. Kii; K. Masuda; K. Morita; H. Ohgaki; K. Torgasin; H. Zen

  Proceedings of IPAC2016, 01 Jan. 2016

  
• Feasibility Study of Photocathode Opearation of Thermionic RF Gun at KU-FEL

  H. Zen; T. Kii; K. Masuda; K. Morita; T. Murata; T. Nogi; H. Ohgaki; S. Suphakul; K. Torgasin

  Proceedings of IPAC2016, 01 Jan. 2016

  
• Beam Dynamics Investigation for the Compact Seeded THz-FEL Amplifier

  S. Suphakul; K. Damminsek; H. Zen; T. Kii; H. Ohgaki

  Energy Procedia, 2016, Peer-reviewed

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• ELECTRON BEAM FOR COMPACT THZ FEL AMPLIFIER AT KYOTO UNIVERSITY

  S. Suphakul; H. Zen; T. Kii; H. Ohgaki

  Proceedings of the 13th Annual Meeting of Particle Accelerator Society of Japan, 2016

  
• 京都大学中赤外自由電子レーザの現状

  全炳俊; 守田健一; 桂山翼; Suphakul Sikharin; Torgasin Konstantin; 紀井俊輝; 増田開; 大垣英明

  Proceedings of the 13th Annual Meeting of Particle Accelerator Society of Japan, 2016

  
• UVSOR-IIIにおける逆コンプトン散乱ビームライン開発とNRF-CTへの応用

  大垣英明; 紀井俊輝; 全炳俊; 大東出; 豊川弘之; 平義隆; 早川岳人; 静間俊行; 加藤政博; 山崎潤一郎

  Proceedings of the 13th Annual Meeting of Particle Accelerator Society of Japan, 2016

  
• オートコリレーションによるピコ秒光陰極励起用UV レーザのパルス長測定

  全炳俊; 中嶋隆; 紀井俊輝; 増田開; 大垣英明

  Proceedings of the 13th Annual Meeting of Particle Accelerator Society of Japan, 2016

  
• ASTRA を用いた4.5 空胴LaB6 光陰極高周波電子銃の数値計算

  Heishun Zen; Toshiteru Kii; Ohgaki Hideaki

  Proceedings of the 13th Annual Meeting of Particle Accelerator Society of Japan, 2016

  
• Observation of mode-selective phonon excitation of 6H-SiC by MIR-FEL pump and pico-second probe laser

  Tsubasa Katsurayama; Tomoya Murata; Kyohei Yoshida; Heishun Zen; Kan Hachiya; Shunsuke Tagiri; Sikharin Suphakul; Konstantin Torgasin; Toshiteru Kii; Kai Masuda; Hideaki Ohgaki

  2016 41ST INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ), 2016

  
• Present Status and Future Plan of Infrared FEL Facility at Kyoto Univ.

  Heishun Zen; Sikharin Suphakul; Toshiteru Kii; Masuda Kai; Hideaki Ohgaki

  2016 41ST INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ), 2016

  
• Present Status and Perspectives of Long Wavelength Free Electron Lasers at Kyoto University

  Heishun Zen; Sikharin Suphakul; Toshiteru Kii; Kai Masuda; Hideaki Ohgaki

  PROCEEDINGS OF THE INTERNATIONAL CONFERENCE SYNCHROTRON AND FREE ELECTRON LASER RADIATION: GENERATION AND APPLICATION (SFR-2016), 2016, Peer-reviewed

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• Generation of High Energy Gamma-ray by Laser Compton Scattering of 1.94-mu m Fiber Laser in UVSOR-III Electron Storage Ring

  Heishun Zen; Yoshitaka Taira; Taro Konomi; Takehito Hayakawa; Toshiyuki Shizuma; Junichiro Yamazaki; Toshiteru Kii; Hiroyuki Toyokawa; Masahiro Katoh; Hideaki Ohgaki

  COE ON SUSTAINABLE ENERGY SYSTEM (THAI-JAPAN), 2016, Peer-reviewed

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• Development of Phonon Dynamics Measurement System by MIR- FEL and Pico-second Laser

  Tomoya Murata; Tsubasa Katsurayama; Toshiteru Kii; Torgasin Konstantin; Kai Masuda; Takeshi Nogi; Hideaki Ohgaki; Sikharin Suphakul; Heishun Zen; Kyohei Yoshida; Kan Hachiya

  FEL2015 37th International Free Electron Laser Conference, Daejeon Convention Center, Daejeon, Korea, Aug. 2015, Peer-reviewed

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• Scintillation of Lead Tungstate Crystal Studied With Single-Electron Beam from KUFEL

  Mohamad Rizwan; Yusuke Uozumi; Kazuki Matsuo; Hideaki Ohgaki; Toshiteru Kii; Heishun Zen; Zviadi Tsamalaidze; Petr Evtoukhovitch; Samoilov Valentin

  ADVANCING OF NUCLEAR SCIENCE AND ENERGY FOR NATIONAL DEVELOPMENT, 2015, Peer-reviewed

  
• Direct Demonstration of Mode-Selective Phonon Excitation for 6H-SiC by a MIR Pulse Laser with Anti-Stokes Raman Scattering Spectroscopy

  Kyohei Yoshida; Taro Sonobe; Heishun Zen; Kan Hachiya; Tomoya Murata; Takeshi Nogi; Yusuke Tsugamura; Motoharu Inukai; Sikharin Supakun; Hani Negm; Konstantin Torgasin; Toshiteru Kii; Kai Masuda; Hideaki Ohgaki

  2014 MRS Fall Meeting, Symposium T: Wide-Bandgap Materials for Solid-State Lighting and Power Electronics, Dec. 2014, Peer-reviewed

  
• Mode-selective phonon excitation in wide-bandgap semiconductor by mid-infrared free-electron-laser

  Muneyuki Kagaya; Kyohei Yoshida; Heishun Zen; Kan Hachiya; Takashi Sagawa; Hideaki Ohgaki

  The 5th International Symposium of Advanced Energy Science ～Contribution to Zero-Emission Energy ～, Oct. 2014, Peer-reviewed

  
• Time-resolved detection of structural change in dye-doped crystalline polymer films using mid-IR laser pulses

  Sandeep Kumar Maurya; Keisuke Mizobata; Takashi Nakajima; Heishun Zen; Toshiteru Kii; Hideaki Ohgaki

  Optics InfoBase Conference Papers, 21 Jul. 2014, Peer-reviewed

  
• The observation of the mode-selective phonon excitation by mid-infrared free-electron laser through anti-Stokes Raman scattering

  K. Yoshida; T. Sonobe; H. Zen; K. Hachiya; K. Okumura; K. Mishima; M. Inukai; H. Negm; K. Torgasin; M. Omer; T. Kii; K. Masuda; H. Ohgaki

  7th KIFEE International Symposium on Environment, Energy and Materials, Mar. 2014, Peer-reviewed

  
• Magnetic property of a staggered-array undulator using a bulk high-temperature superconductor

  Ryota Kinjo; Kenta Mishima; Yong-Woon Choi; Mohamed Omer; Kyohei Yoshida; Hani Negm; Konstantin Torgasin; Marie Shibata; Kyohei Shimahashi; Hidekazu Imon; Kensuke Okumura; Motoharu Inukai; Heishun Zen; Toshiteru Kii; Kai Masuda; Kazunobu Nagasaki; Hideaki Ohgaki

  PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS, Feb. 2014, Peer-reviewed

  
• Diagnosis of the Wavelength Stability of a Mid-Infrared Free-Electron Laser

  Xiaolong Wang; Yu Qin; Takashi Nakajima; Heishun Zen; Toshiteru Kii; Hideaki Ohgaki

  CHINESE JOURNAL OF PHYSICS, Feb. 2014, Peer-reviewed

  
• Potential photochemical applications of the free electron laser irradiation technique in living organisms

  Shishikura F; Hayakawa K; Hayakawa Y; Nakao K; Inagaki M; Nogami K; Sakai T; Tanaka T; Zen H; Kii T; Ohgaki H; Sakae T

  Proceedings of the 36th International Free Electron Laser Conference, FEL 2014, 2014, Peer-reviewed

  
• Development of photocachode drive laser system for RF guns in KU-FEL

  Zen H; Suphakul S; Kii T; Ohgaki H; Kuroda R; Taira Y

  Proceedings of the 36th International Free Electron Laser Conference, FEL 2014, 2014, Peer-reviewed

  
• Development of compact THZ-FEL system at Kyoto University

  Sikharin S; Tsugamura Y; Zen H; Kii T; Ohgaki H; Jia Q

  Proceedings of the 36th International Free Electron Laser Conference, FEL 2014, 2014, Peer-reviewed

  
• Nuclear Physics and Gamma-Ray Sources for Nuclear Security and Nonproliferation

  H. Ohgaki; M. Omer; H. Negm; I. Daito; H. Zen; T. Kii; K. Masuda; T. Hori; R. Hajima; T. Hayakawa; T. Shizuma; M. Kando

  Proceeding of NPNSNP, 2014, Peer-reviewed

  
• A Study of the Nuclear Rsonance Fluorescence Reaction Yield Dependence on the Target Thickness of 208Pb

  Hani Negm; Izuru Daito; Heishun Zen; Toshiteru Kii; Kai Masuda; Toshitada Hori; Hideaki Ohgaki; Ryoichi Hajima; Toshiyuki Shizuma; Takehito Hayakawa; Nobuhiro Kikuzawa

  Proceeding of NPNSNP, 2014, Peer-reviewed

  
• NRF Based Nondestructive Inspection System for SNM by Using Laser-Compton-Backscattering Gamma-Rays

  H. Ohgaki; M. Omer; H. Negm; I. Daito; H. Zen; T. Kii; K. Masuda; T. Hori

  Proc. Nuclear Physics and Gamma-ray sources for nuclear security and nonproliferation, Jan. 2014

  
• 1.6セル光陰極高周波電子銃における0モードのビーム特性への影響

  犬飼元晴; 増田開; 全 炳俊; 村田智哉; 野儀武志; 栂村勇輔; Suphakul Sikharin; 吉田恭平; Torgasin Konstantin; Negm Hani; 紀井俊輝; 長崎百伸; 大垣英明

  第11回日本加速器学会年会プロシーディングス, 2014

  
• Reaction-yield dependence of the (γ, γ′) reaction of 238U on the target thickness

  H. Negm; H. Ohgaki; I. Daito; T. Hayakawa; H. Zen; T. Kii; K. Masuda; T. Hori; R. Hajima; T. Shizuma; N. Kikuzawa

  Journal of Nuclear Science and Technology, 2014, Peer-reviewed

  
• Damage threshold and focusability of mid-infrared free-electron laser pulses gated by a plasma mirror with nanosecond switching pulses

  Xiaolong Wang; Takashi Nakajima; Heishun Zen; Toshiteru Kii; Hideaki Ohgaki

  APPLIED PHYSICS LETTERS, Nov. 2013, Peer-reviewed

  
• Experimental demonstration of mode-selective phonon excitation of 6H-SiC by a mid-infrared laser with anti-Stokes Raman scattering spectroscopy

  Kyohei Yoshida; Taro Sonobe; Heishun Zen; Kan Hachiya; Kensuke Okumura; Kenta Mishima; Motoharu Inukai; Hani Negm; Konstantin Torgasin; Mohamed Omer; Toshiteru Kii; Kai Masuda; Hideaki Ohgaki

  APPLIED PHYSICS LETTERS, Oct. 2013, Peer-reviewed

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• Nuclear resonance fluorescence of ²³⁵U measured with high-resolution LaBr3(Ce) scintillation detectors

  Mohamed Omer; Hani Negm; Heishun Zen; Izuru Daito; Toshiteru Kii; Kai Masuda; Hideaki Ohgaki; Ryoichi Hajima; Toshiyuki Shizuma; Takehito Hayakawa; Nobuhiro Kikuzawa

  Japanese Journal of Applied Physics, Oct. 2013, Peer-reviewed

  
• Pulse duration and wavelength stability measurements of a midinfrared free-electron laser

  Yu Qin; Heishun Zen; Xiaolong Wang; Toshiteru Kii; Takashi Nakajima; Hideaki Ohgaki

  OPTICS LETTERS, Apr. 2013, Peer-reviewed

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• Demonstration of a High-Field Short-Period Undulator Using Bulk High-Temperature Superconductor

  Ryota Kinjo; Marie Shibata; Toshiteru Kii; Heishun Zen; Kai Masuda; Kazunobu Nagasaki; Hideaki Ohgaki

  APPLIED PHYSICS EXPRESS, Apr. 2013, Peer-reviewed

  
• Saturation of the laser-induced narrowband coherent synchrotron radiation process: Experimental observation at a storage ring

  M. Hosaka; N. Yamamoto; Y. Takashima; C. Szwaj; M. Le Parquier; C. Evain; S. Bielawski; M. Adachi; H. Zen; T. Tanikawa; S. Kimura; M. Katoh; M. Shimada; T. Takahashi

  PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS, Feb. 2013, Peer-reviewed

  
• Improvement of trapped field in DyBaCuO bulk by proton irradiation

  Ryota Kinjo; Toshiteru Kii; Marie Shibata; Mahmoud A. Bakr; Yong Woon Choi; Mohamed Omer; Kyohei Yoshida; Hani Negm; Naoki Kimura; Keiichi Ishida; Hidekazu Imon; Takuya Komai; Kyohei Shimahashi; Heishun Zen; Taro Sonobe; Kai Masuda; Kazunobu Nagasaki; Hideaki Ohgaki

  PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, Jan. 2013, Peer-reviewed

  
• Analysis of nuclear resonance fluorescence excitation measured with LaBr3(Ce) detectors near 2 MeV

  Mohamed Omer; Hani Negm; Hideaki Ohgaki; Izuru Daito; Takehito Hayakawa; Mahmoud Bakr; Heishun Zen; Toshitada Hori; Toshiteru Kii; Kai Masuda; Ryoichi Hajima; Toshiyuki Shizuma; Hiroyuki Toyokawa; Nobuhiro Kikuzawa

  Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2013, Peer-reviewed

  
• Optimization of Geometric Configuration of Detector System for Non-destructive Assay Using Nuclear Resonance Fluorescence

  Hani Negm; Mohamed Omer; Heishun Zen; Toshiteru Kii; Kai Masuda; Toshitada Hori; Hideaki Ohgaki; Ryoichi Hajima; Nobuhiro Kikuzawa; Toshiyuki Shizuma; Takehito Hayakawa; Izuru Daito; Hiroyuki Toyokawa

  2013 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (NSS/MIC), 2013, Peer-reviewed

  
• Wide Range Automatic Energy Calibration of LaBr3:Ce Detectors by the Self-Activity Lines

  2013 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (NSS/MIC), 2013, Peer-reviewed

  
• Single-shot spectra of temporally selected micropulses from a mid-infrared free-electron laser by upconversion

  Xiaolong Wang; Takashi Nakajima; Heishun Zen; Toshiteru Kii; Hideaki Ohgaki

  OPTICS LETTERS, Dec. 2012, Peer-reviewed

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• Pulse width measurement of laser Compton scattered gamma rays in picosecond range

  Y. Taira; M. Adachi; H. Zen; N. Yamamoto; M. Hosaka; K. Soda; M. Katoh

  NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Dec. 2012, Peer-reviewed

  
• Low-Temperature Operation of a Bulk HTSC Staggered Array Undulator

  T. Kii; R. Kinjo; N. Kimura; M. Shibata; M. A. Bakr; Y. W. Choi; M. Omer; K. Yoshida; K. Ishida; T. Komai; K. Shimahashi; T. Sonobe; H. Zen; K. Masuda; H. Ohgaki

  IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 2012, Peer-reviewed

  
• Electric field detection of coherent synchrotron radiation in a storage ring generated using laser bunch slicing

  I. Katayama; H. Shimosato; M. Bito; K. Furusawa; M. Adachi; M. Shimada; H. Zen; S. Kimura; N. Yamamoto; M. Hosaka; M. Katoh; M. Ashida

  APPLIED PHYSICS LETTERS, Mar. 2012, Peer-reviewed

  
• Detection of photon-induced excitations in ²³⁵U with LaBr 3:Ce scintillating detectors

  Mohamed Omer; Hani Negm; Heishun Zen; Toshitada Hori; Toshiteru Kii; Kai Masuda; Hideaki Ohgaki; Ryoichi Hajima; Takehito Hayakawa; Izuru Daito; Toshiyuki Shizuma; Mamoru Fujiwara; Seong Hee Park; Nobuhiro Kikuzawa; Gencho Rusev; Anton P. Tonchev; Ying K. Wu

  IEEE Nuclear Science Symposium Conference Record, 2012, Peer-reviewed

  
• Geant4 Simulation of Nuclear Resonance Fluorescence from 11B

  H. Negm; M. Omer; M. Bakr; H. Zen; T. Kii; K. Masuda; T. Hori; H. Ohgaki; R. Hajima; T. Hayakawa; T. Shizuma; N. Kikuzawa; I. Daito; H. Toyokawa

  SORMA WEST2012，Mariott City Center, Oakland, USA，2012.5.14-17, 2012, Peer-reviewed

  
• Investigation of Electron Beam Parameter in Seeded THz-FEL Amplifier Using Photocathode RF Gun

  K. Shimahashi; H. Zen; K. Okumura; M. Shibata; H. Imon; T. Konstantin; H. Negm; M. Omer; K. Yoshida; Y.W. Choi; R. Kinjo; K. Masuda; T. Kii; H. Ohgaki

  10th EMSES 2012，Sunee grand hotel, Thailand，2012.12.5-8, 2012, Peer-reviewed

  
• Observation of the high harmonic generation from 6H-SiC by MIR-FEL

  K. Yoshida; H. Zen; K. Okumura; K. Shimahashi; M. Shibata; T. Komai; H. Imon; H. Negm; M. Omer; Y.W. Choi; R. Kinjo; T. Kii; K. Masuda; H. Ohgaki

  MRS2012 fall meeting，Boston conventional center, USA，2012.11.25-30, 2012, Peer-reviewed

  
• Calculations of γ-Rays Angular Distribution Scattering from 11B in (γ, γ) Interaction

  H. Negm; M. Omer; R. Kinjo; Y.W. Choi; K. Yoshida; T. Konstantin; M. Shibata; K. Shimahashi; H. Imon; H. Zen; T. Hori; T. Kii; K. Masuda; H. Ohgaki; Monte Carlo

  Zero-Carbon Energy Kyoto 2012，2013, 2012, Peer-reviewed

  
• Analysis of SNIP Algorithm for Background Estimation in Spectra Measured with LaBr3:Ce Detectors

  M. Omer; H. Negm; R. Kinjo; Y.W. Choi; K. Yoshida; T. Konstantin; M. Shibata; K. Shimahashi; H. Imon; H. Zen; T. Hori; T. Kii; K. Masuda; H Ohgaki

  Zero-Carbon Energy Kyoto 2012，2013, 2012, Peer-reviewed

  
• Optimization of the new designed FEL beam transport line

  K. Yoshida; H. Zen; K. Okumura; K. Shimahashi; M. Shibata; T. Komai; H. Imon; H. Negm; M. Omer; Y.W. Choi; R. Kinjo; T. Kii; K. Masuda; H. Ohgaki

  Zero-Carbon Energy Kyoto 2012，2013, 2012, Peer-reviewed

  
• Current status of the non-destructive Assay for ²³⁵U and ²³⁹Pu toward more secure nuclear power

  Mohamed Omer; Mahmoud A. Bakr; Ryota Kinjo; Yong Woon Choi; Kyohei Yoshida; Naoki Kimura; Keiichi Ishida; Takuya Komai; Kyohei Shimahashi; Hidekazu Imon; Marie Shibata; Taro Sonobe; Heishun Zen; Toshitada Hori; Toshiteru Kii; Kai Masuda; Hideaki Ohgaki; Ryoichi Hajima; Takehito Hayakawa

  Green Energy and Technology, 2012, Peer-reviewed

  
• Simulation of electron trajectory in bulk HTSC staggered Array undulator

  Ryota Kinjo; Koji Nagahara; Toshiteru Kii; Naoki Kimura; Mahmoud A. Bakr; Yong Woon Choi; Mohamed Omer; Kyohei Yoshida; Keiichi Ishida; Hidekazu Imon; Takuya Komai; Marie Shibata; Kyohei Shimahashi; Heishun Zen; Taro Sonobe; Kai Masuda; Kazunobu Nagasaki; Hideaki Ohgaki

  Green Energy and Technology, 2012, Peer-reviewed

  
• BPM signal processing for KU-FEL linac (1)

  Y.W. Choi; R. Kinjo; M. Omer; K. Yoshida; N. Hani; K. Ishida; N. Kimura; K. Shimahashi; M. Shibata; T. Komai; T. Sonobe; H. Zen; K. Masuda; T. Kii; H. Ohgaki

  日本原子力学会2012 年春の年会，福井大学，2012.3.19-21, 2012

  
• Potential of LaBr3 (Ce) for Measuring Nuclear Resonance Fluorescence Excitations of Nuclear Materials near 2MeV

  M. Omer; R. Kinjo; Y.W. Choi; K. Yoshida; H. Negm; M.A. Bakr; H. Zen; T. Hori; T. Kii; K. Masuda; H. Ohgaki; R. Hajima; T. Hayakawa; T. Shizuma; H. Toyokawa

  日本原子力学会2012 年春の年会，福井大学，2012.3.19-21, 2012

  
• Detection of Photon-Induced Excitations in U-235 with LaBr3 : Ce Scintillating Detectors

  Mohamed Orner; Hani Negm; Heishun Zen; Toshitada Hori; Toshiteru Kii; Kai Masuda; Hideaki Ohgaki; Ryoichi Hajima; Takehito Hayakawa; Izuru Daito; Toshiyuki Shizuma; Mamoru Fujiwara; Seong Hee Park; Nobuhiro Kikuzawa; Gencho Rusev; Anton P. Tonchev; Ying K. Wu

  2012 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE RECORD (NSS/MIC), 2012, Peer-reviewed

  
• Comparison of the Heating Properties of LaB6 and CeB6 Due to the Back Bombardment Effect in a Thermionic RF Gun

  Mahmoud Bakr; R. Kinjo; Y. W. Choi; M. Omer; K. Yoshida; S. Ueda; M. Takasaki; K. Ishida; N. Kimura; H. Zen; T. Sonobe; T. Ku; K. Masuda; H. Ohgaki

  JOURNAL OF THE KOREAN PHYSICAL SOCIETY, Nov. 2011, Peer-reviewed

  
• Generation of energy-tunable and ultra-short-pulse gamma rays via inverse Compton scattering in an electron storage ring

  Y. Taira; M. Adachi; H. Zen; T. Tanikawa; N. Yamamoto; M. Hosaka; Y. Takashima; K. Soda; M. Katoh

  NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Oct. 2011, Peer-reviewed

  
• Back bombardment for dispenser and lanthanum hexaboride cathodes

  Mahmoud Bakr; R. Kinjo; Y. W. Choi; M. Omer; K. Yoshida; S. Ueda; M. Takasaki; K. Ishida; N. Kimura; T. Sonobe; T. Kii; K. Masuda; H. Ohgaki; H. Zen

  PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS, Jun. 2011, Peer-reviewed

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• Ultra-short coherent terahertz radiation from ultra-short dips in electron bunches circulating in a storage ring

  N. Yamamoto; M. Shimada; M. Adachi; H. Zen; T. Tanikawa; Y. Taira; S. Kimura; M. Hosaka; Y. Takashima; T. Takahashi; M. Katoh

  NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, May 2011, Peer-reviewed

  
• Feasibility study of ultra-short gamma ray pulse generation by laser Compton scattering in an electron storage ring

  Y. Taira; M. Adachi; H. Zen; T. Tanikawa; M. Hosaka; Y. Takashima; N. Yamamoto; K. Soda; M. Katoh

  NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, May 2011, Peer-reviewed

  
• Intense Coherent THz Synchrotron Radiation Induced by a Storage Ring FEL Seeded with a Femtosecond Laser

  M. Hosaka; Y. Taira; Y. Takashima; N. Yamamoto; M. Adachi; M. Katoh; T. Tanikawa; H. Zen; S. Bielawski; C. Szwaj; C. Evain

  FEL2011，Shanghai，2011.8.22-26, 2011

  
• Compensation of Nonlinear Effect in Apple-II Undulator by Multi-wire Method in UVSOR-II

  H. Zen; Y. Kikuchi; M. Hosaka; N. Yamamoto; K. Hayashi; T. Kondo; J. Yamazaki; M. Adachi; Y. Takashima; M. Katoh

  8th Annual Meeting of PASJ，つくば国際会議場，2011.8.1-3, 2011, Peer-reviewed

  
• Analysis of transient response of RF gun cavity due to back-bombardment effect in KU-FEL

  Mahmoud Bakr; Heishun Zen; Kyohei Yoshida; Satoshi Ueda; Masato Takasaki; Keiichi Ishida; Naoki Kimura; Ryota Kinjo; Yong-Woon Choi; Taro Sonobe; Toshiteru Kii; Kai Masuda; Hideaki Ohgaki

  Green Energy and Technology, 2011, Peer-reviewed

  
• Beam stabilization by using BPM in KU-FEL

  Yong-Woon Choi; Heishun Zen; Keiichi Ishida; Naoki Kimura; Satoshi Ueda; Kyohei Yoshida; Masato Takasaki; Ryota Kinjo; Mahmoud Bakr; Taro Sonobe; Kai Masuda; Toshiteru Kii; Hideaki Ohgaki

  Green Energy and Technology, 2011, Peer-reviewed

  
• 京都大学自由電子レーザー施設

  金城良太; M.A. Bakr; Y.W. Choi; M. Omer; 吉田恭平; Hani Negm; 木村尚樹; 石田啓一; 駒井琢也; 柴田茉莉江; 島橋享兵; 堀利匡; 全炳俊; 園部太郎; 紀井俊輝; 増田開; 長﨑百伸; 大垣英明

  ビーム物理研究会2011ビーム物理若手の会，2011.2.8-9, 2011

  
• 京都大学エネルギー理工学研究所における量子放射エネルギー研究

  紀井俊輝; 大垣英明; 全炳俊; 堀利匡; 園部太郎; M.A. Bakr; Y.W. Choi; 吉田恭平; M. Omer; N. Hani; 石田啓一; 木村尚樹; 駒井琢也; 柴田茉莉江; 島橋享平; 増田開; 金城良太; T. Konstantin; 井門秀和

  ビーム物理研究会若手の会，仙台市青葉区作並，2011.12.9-10, 2011

  
• Electric Field Detection of Coherent Synchrotron Terahertz Radiation

  I. Katayama; H. Shimosato; M. Bito; K. Furusawa; M. Adachi; M. Shimada; H. Zen; S. Kimura; N. Yamamoto; M. Hosaka; M. Katoh; M. Ashida

  Oct. 2010, Peer-reviewed

  
• Cathode grid current dependence of D(d, n)He-3 reaction rates in an inertial electrostatic confinement device driven by a ring-shaped magnetron ion source

  K. Masuda; T. Nakagawa; J. Kipritidis; T. Kajiwara; Y. Yamagaki; H. Zen; K. Yoshikawa; K. Nagasaki

  PLASMA PHYSICS AND CONTROLLED FUSION, Sep. 2010, Peer-reviewed

  
• Comparison Between the Hexaboride Materials as Thermionic Cathode in the RF Guns for a Compact MIR-FEL Driver

  Mahmoud Bakr; Kyohei Yoshida; Keisuke Higashimura; Satoshi Ueda; Ryota Kinjo; Heishun Zen; Taro Sonobe; Toshiteru Kii; Kia Masuda; Hideaki Ohgaki

  Green Energy and Technology, 2010, Peer-reviewed

  
• Observation of Saturation Effect on Vacuum Ultraviolet Coherent Harmonic Generation at UVSOR-II

  Takanori Tanikawa; Masahiro Adachi; Heishun Zen; Masahito Hosaka; Naoto Yamamoto; Yoshitaka Taira; Masahiro Katoh

  APPLIED PHYSICS EXPRESS, 2010, Peer-reviewed

  
• The Present Status and Future Upgrade of KU-FEL

  M A Bakr; T Kii; R Kinjo; K Higashimura; K Masuda; H Ohgaki; T Sonobe; S Ueda; K Yoshida; Y W Choi; H Zen

  Asian Core mini seminar, Pohang Accelerator Laboratory, 2010.2.17, 2010

  
• SHIELDING ANALYSIS FOR A 40-MeV ELECTRON LINAC FACILITY

  Kai Masuda; Toshiteru Kii; Hideaki Ohgaki; Heishun Zen; Tetsuo Yamazaki

  NUCLEAR TECHNOLOGY, Nov. 2009, Peer-reviewed

  
• DIAGNOSTIC SYSTEM DEVELOPMENT FOR D-D AND D-He-3 REACTION DISTRIBUTIONS IN AN INERTIAL-ELECTROSTATIC CONFINEMENT DEVICE BY COLLIMATED PROTON MEASUREMENTS

  Kai Masuda; Takeshi Fujimoto; Tomoya Nakagawa; Heishun Zen; Taiju Kajiwara; Kazunobu Nagasaki; Kiyoshi Yoshikawa

  FUSION SCIENCE AND TECHNOLOGY, Jul. 2009, Peer-reviewed

  
• BUILT-IN ION SOURCE FOR INERTIAL ELECTROSTATIC CONFINEMENT IN LOW PRESSURE REGIME

  Kai Masuda; Tomoya Nakagawa; Taiju Kajiwara; Heishun Zen; Kiyoshi Yoshikawa; Kazunobu Nagasaki

  FUSION SCIENCE AND TECHNOLOGY, Jul. 2009, Peer-reviewed

  
• DIAGNOSTIC SYSTEM DEVELOPMENT FOR D-D AND D-He-3 REACTION DISTRIBUTIONS IN AN INERTIAL-ELECTROSTATIC CONFINEMENT DEVICE BY COLLIMATED PROTON MEASUREMENTS

  Kai Masuda; Takeshi Fujimoto; Tomoya Nakagawa; Heishun Zen; Taiju Kajiwara; Kazunobu Nagasaki; Kiyoshi Yoshikawa

  FUSION SCIENCE AND TECHNOLOGY, Jul. 2009, Peer-reviewed

  
• Beam Energy Compensation in a Thermionic RF Gun by Cavity Detuning

  Heishun Zen; Toshiteru Kii; Kai Masuda; Ryota Kinjo; Keisuke Higashimura; Kazunobu Nagasaki; Hideaki Ohgaki

  IEEE TRANSACTIONS ON NUCLEAR SCIENCE, Jun. 2009, Peer-reviewed

  
• Lasing of MIR-FEL and Construction of User Beamline at Kyoto University

  M A Bakr; K Yoshida; K Higashimura; S Ueda; M Takasaki; R Kinjo; H Zen; T Sonobe; T. Kii

  PAC9, Vancouver, Canada , 2009.5.4, 2009, Peer-reviewed

  
• Lasing at 12 mu m Mid-Infrared Free-Electron Laser in Kyoto University

  Hideaki Ohgaki; Toshiteru Kii; Kai Masuda; Heishun Zen; Satoshi Sasaki; Takumi Shiiyama; Ryota Kinjo; Kiyoshi Yoshikawa; Tetsuo Yamazaki

  JAPANESE JOURNAL OF APPLIED PHYSICS, Oct. 2008, Peer-reviewed

  
• Development of IR-FEL facility for energy science in Kyoto University

  Heishun Zen; Toshiteru Kii; Kai Masuda; Hideaki Ohgaki; Tetsuo Yamazaki

  INFRARED PHYSICS & TECHNOLOGY, May 2008, Peer-reviewed

  
• Development of IR-FEL facility for energy science in Kyoto University

  Kii T; Ohgaki H; Masuda K; Zen H; Sasaki S; Shiiyama T; Yamazaki T

  8th International Topical Meeting on Nuclear Applications and Utilization of Accelerators, ACCAPP'07, 2007, Peer-reviewed

  
• FEL gain calculation based on measured magnetic field of KU-FEL undulator

  M. Nakano; S. Sasaki; T. Shiiyama; N. Ohkawachi; H. Zen; T. Kii; K. Masuda; H. Ohgaki; K. Yoshikawa; T. Yamazaki

  加速器学会，仙台市市民会館，2006.8.2-4, 2006

  
• 三極管構造を用いた熱陰極型高周波電子銃の特性解析

  楠亀弘一; 全炳俊; 大垣英明; 増田開; 福井敏夫; 中井陽子; 紀井俊輝; 山崎鉄夫

  高周波電子銃研究会，大阪大学産業科学研究所，2005.11.16-17, 2005

  
• 高周波電力波形制御によるビームエネルギーの補償について

  中井陽子; 紀井俊輝; 福井敏夫; 全炳俊; 楠亀弘一; 増田開; 大垣英明; 吉川潔; 山崎鉄夫

  高周波電子銃研究会，大阪大学産業科学研究所，2005.11.16-17, 2005

  
• Enhancement of Oxidation of Silicon Carbide Originating from Stacking Faults Formed by Mode-Selective Phonon Excitation Using a Mid-Infrared Free Electron Laser

  Yuki Maeda; Heishun Zen; Atsushi Kitada; Kuniaki Murase; Kazuhiro Fukami

  The Journal of Physical Chemistry Letters, 28 Mar. 2022, Peer-reviewed

  
• Peak Shift of Coherent Edge Radiation Spectrum Depending on Radio Frequency Field Phase of Accelerator

  Norihiro Sei; Heishun Zen; Hideaki Ohgaki

  Applied Sciences, 10 Jan. 2022, Peer-reviewed

  

Misc.

• 自由電子レーザー照射による菌体の石灰化能の変化

  高村幸恵; 高村幸恵; 河野哲朗; 境武志; 全炳俊; 齋藤真規; 渡辺新; 戸田みゆき; 戸田みゆき; 玉村亮; 早川恭史; 大垣英明; 寒河江登志朗; 岡田裕之

  日本解剖学会総会・全国学術集会抄録集(CD-ROM), 2022

  
• 自由電子レーザーの歯科分野応用への現状

  河野哲朗; 寒河江登志朗; 境武志; 早川建; 全炳俊; 大垣英明; 早川恭史; 岡田裕之

  日本放射光学会年会・放射光科学合同シンポジウム(Web), 2022

  
• Frontier of material processing with burst mode pulsed laser: Application of Free Electron Laser in Dentistry-From Research in LEBRA-FEL and KU-FEL-

  河野哲朗; 寒河江登志朗; 境武志; ZEN Heishun; 大垣英明; 早川恭史; 岡田裕之

  レーザ加工学会誌, 2022

  
• 皮膚メラニンに対する中赤外自由電子レーザーの照射効果に関する研究

  川崎平康; 佐藤碧美; 藤岡隼; 小山貴裕; 築山光一; 全炳俊

  日本放射光学会年会・放射光科学合同シンポジウム(Web), 2018

  
• 赤外自由電子レーザーを用いた格子振動励起とSiCのアノード酸化挙動の関係

  前田有輝; 北田敦; 全炳俊; 邑瀬邦明; 深見一弘

  表面技術協会講演大会講演要旨集, 2022

  
• UVSOR-IIにおける飽和領域でのコヒーレント高調波の観測

  谷川 貴紀; 阿達 正浩; 全 炳俊; 保坂 将人; 山本 尚人; 平 義隆; 山崎 潤一郎; 加藤 政博

  放射光, 31 Mar. 2011

  
• UVSOR-IIにおけるレーザーコンプトン散乱を用いた超短パルスガンマ線発生

  平 義隆; 阿達 正浩; 全 炳俊; 谷川 貴紀; 高嶋 圭史; 保坂 将人; 山本 尚人; 曽田 一雄; 加藤 政博

  放射光, 31 Mar. 2010

  
• Generation of Terahertz Radiation by Electron Accelerators

  全 炳俊; 清 紀弘; 入澤 明典; 加藤 政博

  化學工業, Mar. 2017

  
• LCSガンマ線を用いた陽電子消滅寿命測定によるシンチレータ結晶中カチオン空孔の可視化

  藤森公佑; 北浦守; 平義隆; 藤本將輝; 全炳俊; 岡野泰彬; 加藤政博; 加藤政博; 保坂将人; 山崎潤一郎; 鎌田圭; 大西彰正

  日本放射光学会年会・放射光科学合同シンポジウム(Web), 2020

  
• Photon induced positron annihilation lifetime spectroscopy spectra of multi-component oxide crystals measured using laser-Compton-scattered gamma ray pulses

  藤森公佑; 北浦守; 平義隆; 藤本將輝; 全炳俊; 岡野泰彬; 加藤政博; 加藤政博; 保坂将人; 山崎潤一郎; 鎌田圭; 大西彰正

  応用物理学会春季学術講演会講演予稿集(CD-ROM), 2020

  
• 中赤外自由電子レーザーによるダイヤモンドにおける選択的格子振動励起

  佐藤央至; 吉田恭平; 全 炳俊; 蜂谷 寛; 後藤琢也; 佐川 尚; 大垣英明

  第66回応用物理学会 春季学術講演会（東京工業大学 大岡山キャンパス）, Mar. 2019

  
• 架橋シアノ分子の伸縮振動を選択励起して観測したプルシアンブルー薄膜のIVCT吸収帯の変化

  北浦守; 全炳俊; 石崎学; 大西彰正

  日本放射光学会年会・放射光科学合同シンポジウム(Web), 2019

  
• 中赤外自由電子レーザーによるペロブスカイト型結晶における選択的格子振動励起

  山田凌司; 酒井佑輔; 吉田恭平; 全 炳俊; 蜂谷 寛; 後藤琢也; 佐川 尚; 大垣英明

  日本物理学会2018年秋季大会（同志社大 京田辺キャンパス）, Sep. 2018

  
• Development of the energy functionality through selective phonon- mode excitation by mid-infrared free-electron laser

  Kan HACHIYA; Yusuke SAKAI; Oji SATO; Ryoji YAMADA; Kyohei YOSHIDA; Heishun ZEN; Takashi SAGAWA; Hideaki OHGAKI

  The 9th International Symposium of Advanced Energy Science ~Interplay for Zero-Emission Energy~, Sep. 2018

  
• Development of Mid-Infrared Free Electron Laser (KU-FEL) and User Stations at Kyoto University

  全 炳俊; 紀井 俊輝; 増田 開; 大垣 英明

  日本赤外線学会誌 = Journal of the Japan Society of Infrared Science and Technolog, Aug. 2018

  
• Direct observation of mode-selective phonon excitation induced by mid-infrared pulse laser with separation of the sum-frequency generation component

  吉田 恭平; 桂山 翼; 村田 智哉; 全 炳俊; 蜂谷 寛; 紀井 俊輝; 増田 開; 大垣 英明

  日本赤外線学会誌 = Journal of the Japan Society of Infrared Science and Technolog, Aug. 2018

  
• レーザーコンプトン散乱ガンマ線によるデルブリュック散乱

  早川岳人; KOGA James K.; 静間敏行; 全炳俊; 紀伊俊輝; 大垣英明; 藤本将輝; 加藤政博

  日本原子力学会秋の大会予稿集(CD-ROM), 2018

  
• UVSORにおけるLCS-NRFによる同位体CT測定システムのアップグレード計画

  大垣英明; 全炳俊; HANI Negm; HANI Negm; 紀井俊輝; 早川岳人; 静間俊行; 加藤政博; 藤本将輝; 豊川弘之; 平義隆

  日本原子力学会秋の大会予稿集(CD-ROM), 2018

  
• Observation of transient cathode temperature rise induced by back-streaming electrons in a 4.5-cell thermionic RF gun

  Zen Heishun; Kii Toshiteru; Ohgaki Hideaki

  Meeting Abstracts of the Physical Society of Japan, 2018

  
• Study on improving durablity of Cs-Te photocathode for an RF-gun

  Miyamatsu Junya; Ono Hiroya; Sakaue Kazuyuki; Washio Masakazu; Ijima Hokuto; Zen Heishun

  Meeting Abstracts of the Physical Society of Japan, 2018

  
• Pulse length evaluation from frequency spectrum of coherent transition radiation measured by Michelson interferometer

  Kashiwagi S; Nishimori N; Hinode F; Miura S; Muto T; Hama H; Ninomiya S; Zen H; Kanomata K; Saito H; Saito Y; Takahashi K; Nagasawa I; Nanbu K

  Meeting Abstracts of the Physical Society of Japan, 2018

  
• Study of coherent edge radiation for the measurement of the bunch length in an electron bunch

  Sei Norihiro; Zen Heishun; Ohgaki Hideaki; Ogawa Hiroshi; Tanaka Toshinari; Hayamawa Yasushi; Sakai Takeshi; Sumitomo Yosuke; Takahashi Yumiko; Hayakawa Ken; Nogami Kyoko

  Meeting Abstracts of the Physical Society of Japan, 2018

  
• Selective phonon-mode excitation in functional semiconductor materials for energy conversion by mid-infrared free-electron laser

  K. Hachiya; K. Yoshida; H. Zen; T. Sagawa; H. Ohgaki

  The 8th International Symposium of Advanced Energy Science - Interdisciplinary Approach to Zero-Emission Energy -, Sept. 5-7, 2017, 京都大学宇治キャンパス, Sep. 2017, Peer-reviewed

  
• 中赤外自由電子レーザーによる機能材料における選択的格子振動励起

  竹本亮太; 吉田恭平; 全 炳俊; 蜂谷 寛; 佐川 尚; 大垣英明

  2017年 応用物理学会春季講演会 (2017) パシフィコ横浜, Mar. 2017, Peer-reviewed

  
• Development of Accelerator Driven Tunable THz Light Source at Kyoto University

  全 炳俊; Suphakul Sikharin; 紀井 俊輝; 増田 開; 大垣 英明

  レーザー学会研究会報告 = Reports on topical meeting of the Laser Society of Japan, 28 Feb. 2017

  
• UVSORにおけるLCS-NRFによる同位体CT測定(2)LCS-NRFによる同位体CT画像再構成のためのソフトウェア開発

  ZEN Heishun; 大垣英明; 平義隆; 早川岳人; 静間俊行; 紀井俊輝; 豊川弘之; 加藤政博

  日本原子力学会春の年会予稿集(CD-ROM), 2017

  
• UVSORにおけるLCS-NRFによる同位体CT測定(1)UVOSRにおける同位体CT測定システム

  大垣英明; ZEN Heishun; 平義隆; 早川岳人; 静間俊行; 紀井俊輝; 豊川弘之; 加藤政博

  日本原子力学会春の年会予稿集(CD-ROM), 2017

  
• 電子加速器によるテラヘルツ波の発生

  全炳俊; 清紀弘; 入澤明典; 加藤政博

  化学工業, 2017, Peer-reviewed, Invited

  
• Investigation of Quantum Efficiency Enhancement by Schottky Effect on Lanthanum Hexaboride Photocathode

  Zen Heishun; Kii Toshiteru; Ohgaki Hideaki

  Meeting Abstracts of the Physical Society of Japan, 2017

  
• 中赤外自由電子レーザを用いた6H-SiCの選択的格子振動励起の観測

  桂山翼; 村田智哉; 吉田恭平; 全炳俊; 田伐俊介; 蜂谷寛; 紀井俊輝; 増田開; 大垣英明

  第26回（平成28年度）日本赤外線学会研究発表会 (2016), 自然科学研究機構 国立天文台, Nov. 2016, Peer-reviewed

  
• Improvement of Kyoto University Free Electron Laser Performance by Replacing Undulator and Optical Resonator

  全 炳俊; 紀井 俊輝; 増田 開; 大垣 英明

  日本赤外線学会誌 = Journal of the Japan Society of Infrared Science and Technolog, Aug. 2016

  
• Photoemission Properties of LaB6 and CeB6 Under Various Temperature and Incident Photon Energy Conditions

  Kenichi Morita; Heishun Zen; Kai Masuda; Konstantin Torgasin; Tsubasa Katsurayama; Tomoya Murata; Sikharin Suphakul; Hiroki Yamashita; Takeshi Nogi; Toshiteru Kii; Kazunobu Nagasaki; Hideaki Ohgaki

  IPAC 2016/BEXCO-Bisan Exhibition & Convention Center, May 2016, Peer-reviewed

  Access this misc :

  
• FPDのMeVエネルギーγ線イメージングへの応用に関する研究

  大垣英明; 全炳俊; 藤本慎也; 金井大樹

  日本原子力学会春の年会予稿集(CD-ROM), 16 Mar. 2016

  
• 中赤外自由電子レーザーを用いた有機薄膜の相変化観測 IV―透過分光法による薄膜の瞬時温度評価―

  SANDEEP Maurya; 溝端圭介; 中嶋隆; ZEN H; 紀井俊輝; 大垣英明

  応用物理学会春季学術講演会講演予稿集(CD-ROM), 03 Mar. 2016

  
• UVSORにおける逆コンプトン散乱ビームライン開発の現状

  大垣英明; 全炳俊; 紀井俊輝; 許斐太郎; 山崎潤一郎; 加藤政博; 早川岳人; 静間俊行; 平義隆; 豊川弘之

  日本放射光学会年会・放射光科学合同シンポジウム予稿集, 09 Jan. 2016

  
• 京都大学小型中赤外自由電子レーザの現状

  全炳俊; 村田智哉; 吉田恭平; 黒田隆之助; 紀井俊輝; 増田開; 大垣英明

  日本放射光学会年会・放射光科学合同シンポジウム予稿集, 09 Jan. 2016

  
• 京都大学KU‐FELにおけるテラヘルツ帯コヒーレント放射源のスペクトル測定

  清紀弘; 全炳俊; 大垣英明

  日本放射光学会年会・放射光科学合同シンポジウム予稿集, 09 Jan. 2016

  
• 高出力テラヘルツ光源開発のためのコヒーレントチェレンコフ放射の研究

  清紀弘; 小川博嗣; 早川建; 田中俊成; 早川恭史; 中尾圭佐; 境武志; 野上杏子; 稲垣学; 全炳俊; 大垣英明; 高橋俊晴

  第22回FELとHigh-Power Radiation研究会, 2016年1月21日, つくば, Jan. 2016

  
• ピコ秒レーザを用いた中赤外自由電子レーザ誘起選択的格子振動励起の観測

  村田智哉; 全 炳俊; 吉田恭平; 蜂谷 寛; 桂山 翼; 野儀武志; S.Suphakul; K.Torgasin; 紀井俊輝; 増田 開; 大垣英明

  第22回FELとHigh-Power Radiation 研究会, 高エネルギー加速器研究機構, 茨城県, Jan. 2016, Peer-reviewed

  
• Report of the 13th High Brightness/rf Electron Gun Workshop

  全 炳俊; 紀井 俊輝; 増田 開; 大垣 英明

  加速器 : 日本加速器学会誌, 2016

  
• Can the Eyes of the Crayfish Detect Mid-Infrared light?

  Shishikura Fumio

  Journal of Nihon University Medical Association, 2016

  
• 22aAP-10 Generation and Measurement of Coherent Synchrotron Radiation and Edge Radiation from an MIR-FEL Driver Linac

  Zen H; Sei N; Ohgaki H

  Meeting Abstracts of the Physical Society of Japan, 2016

  
• 電子銃陰極近傍の空間電荷効果によるビームの横方向位相空間分布の自己線形化現象

  野儀 武志; 増田 開; 山下 大樹; 守田 健一; Torgasin Konstantin; 桂山 翼; 村田 智哉; Sikharin Suphakul; 全 炳俊; 紀井 俊輝; 長﨑 百伸; 大垣 英明

  第13回高輝度高周波電子銃研究会, Dec. 2015

  
• Construction of Compact Seeded THz FEL Amplifier system at Kyoto University

  S. Sikharin; K. Damninsek; H. Zen; T. Kii; K. Masuda; H. Ohgaki

  日本原子力学会/静岡大学静岡キャンパス, Sep. 2015, Peer-reviewed

  
• 中赤外自由電子レーザーを用いた有機薄膜の相変化観測 III―膜質のさらなる改善とアニーリング効果―

  溝端圭介; SANDEEP Maurya; 中嶋隆; 全炳俊; 紀井俊輝; 大垣英明

  応用物理学会秋季学術講演会講演予稿集(CD-ROM), 31 Aug. 2015

  
• Study on detector geometry for active non-destructive inspection system of SNMs by nuclear resonance fluorescence

  Hani Hussein Negm; Hideaki Ohgaki; Izuru Daito; Toshitada Hori; Toshiteru Kii; Heishun Zen; Ryoichi Hajima; Takehito Hayakawa; Toshiyuki Shizuma; Shinya Fujimoto

  2015 IEEE International Symposium on Technologies for Homeland Security, HST 2015, 26 Aug. 2015

  
• UVSOR‐IIIにおける1.94‐μmファイバーレーザを用いたレーザコンプトン散乱ガンマ線源の特性評価

  ZEN Heishun; 紀井俊輝; 大垣英明; 平義隆; 豊川弘之; 許斐太郎; 山崎潤一郎; 加藤政博; 早川岳人; 静間俊行

  日本原子力学会秋の大会予稿集(CD-ROM), 21 Aug. 2015

  
• Image Charge Effect on Emittance Reduction Phenomenon in Electron Gun

  Takeshi Nogi; Tsubasa Katsurayama; Toshiteru Kii; Kai Masuda; Kenichi Morita; Tomoya Murata; Kazunobu Nagasaki; Hideaki Ohgaki; Sikharin Suphakul; K. Torgasin; Hiroki Yamashita; Heishun Zen

  37th International Free Electron Laser Conference (FEL 2015)/Daejeon Convention Center, Aug. 2015, Peer-reviewed

  
• Effect of microwave irradiation on the electronic structure of ZnO

  Kyohei Yoshida; Taro Sonobe; Heishun Zen; Kan Hachiya; Kensuke Okumura; Kenta Mishima; Motoharu Inukai; Hani Negm; Konstantin Torgasin; Mohamed Omer; Ryota Kinjo; Toshiteru Kii; Kai Masuda; Hideaki Ohgaki

  JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, Aug. 2015

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• Time-resolved detection of structural change in polyethylene films using mid-infrared laser pulses

  Eduard Ageev; Keisuke Mizobata; Takashi Nakajima; Heishun Zen; Toshiteru Kii; Hideaki Ohgaki

  APPLIED PHYSICS LETTERS, Jul. 2015

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• Reaction-yield dependence of the (γ, γ′) reaction of ²³⁸U on the target thickness

  Hani Negm; Hideaki Ohgaki; Izuru Daito; Takehito Hayakawa; Heishun Zen; Toshiteru Kii; Kai Masuda; Toshitada Hori; Ryoichi Hajima; Toshiyuki Shizuma; Nobuhiro Kikuzawa

  Journal of Nuclear Science and Technology, 03 Jun. 2015

  
• Investigation of the Electrical Field Sensitivity of Sub-mu m Y-Ba-Cu-O Detectors

  Juliane Raasch; Artem Kuzmin; Petra Thoma; Konstantin Ilin; Matthias Arndt; Stefan Wuensch; Michael Siegel; Johannes Steinmann; Anke-Susanne Mueller; Eleonore Roussel; Clement Evain; Christophe Szwaj; Serge Bielawski; Taro Konomi; Shin-ichi Kimura; Masahiro Katoh; Masahito Hosaka; Naoto Yamamoto; Heishun Zen; Kazumasa Iida; Bernhard Holzapfel

  IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 2015

  
• Expected THz-CSR Radiation Performance from a Short Undulator

  Sikharin Suphakul; Hideaki Ohgaki; Toshiteru Kii; Kai Masuda; Heishun Zen; Yusuke Tsugamura

  日本原子力学会/茨城大学工学部, May 2015, Peer-reviewed

  
• 中性子/γ線複合型核検知システム開発；（1）全体総括

  大垣英明; 紀井俊輝; 増田 開; 全 炳俊; 三澤 毅; 高橋佳之; Hani Negm; 堀 利匡; 大東 出; 羽島良一; 早川岳人; 静間俊行; 神門正城; 藤本真也; 酒井文雄

  日本原子力学会2015年春の年会, Mar. 2015

  
• 中赤外自由電子レーザーを用いた有機薄膜の相変化観測 II―膜質の改善と薄膜温度の評価―

  溝端圭介; MAURYA Sandeep; 中嶋隆; ZEN H; 紀井俊輝; 大垣英明

  応用物理学会春季学術講演会講演予稿集(CD-ROM), 26 Feb. 2015

  
• Emission properties and back-bombardment for CeB6 compared to LaB6

  Mahmoud Bakr; M. Kawai; T. Kii; H. Zen; K. Masuda; H. Ohgaki

  JOURNAL OF APPLIED PHYSICS, Feb. 2015

  
• 京都大学中赤外自由電子レーザー装置の現状と利用

  大垣英明; 紀井俊輝; 増田開; 全炳俊; 吉田恭平

  加速器, 31 Jan. 2015

  
• KU‐FELにおける高強度テラヘルツ帯コヒーレント放射光の観測

  清紀弘; 全炳俊; 大垣英明

  日本放射光学会年会・放射光科学合同シンポジウム予稿集, 10 Jan. 2015

  
• UVSORにおける逆コンプトン散乱ガンマ線発生と応用展開

  全炳俊; 許斐太郎; 平義隆; 静間俊之; 早川岳人; 豊川弘之; 加藤政博; 大垣英明

  日本放射光学会年会・放射光科学合同シンポジウム予稿集, 10 Jan. 2015

  
• 京都大学エネルギー理工学研究所における大強度中赤外レーザー開発とその応用

  全炳俊; 吉田恭平; 紀井俊輝; 増田開; 大垣英明

  日本放射光学会年会・放射光科学合同シンポジウム予稿集, 10 Jan. 2015

  
• Development of Coherent Terahertz Wave Sources Using LEBRA and KU-FEL S-band Linacs

  N. Sei; H. Ogawa; K. Hayakawa; T. Tanaka; Y. Hayakawa; K. Nakao; T. Sakai; K. Nogami; M. Inagaki; H. Ohgaki; H. Zen

  Proceedings of FEL2015 (37th International Free Electron Laser Conference, 23-28 August, 2015, Daejeon, Korea), 2015

  
• Narrow band Coherent Edge radiation at UVSOR-III

  Hosaka M; Oodake D; Yamamoto N; Takashima Y; Zen H; Bielawski S; Szwaj C; Konomi T; Yamazaki J; Katoh M

  6th International Particle Accelerator Conference, IPAC 2015, 2015, Peer-reviewed

  
• UVSOR‐IIIにおける1.94μmファイバーレーザーを用いたレーザーコンプトン散乱ガンマ線発生

  全炳俊; 平義隆; 許斐太郎; 早川岳人; 静間俊行; 山崎潤一郎; 紀井俊輝; 豊川弘之; 加藤政博; 大垣英明

  日本加速器学会年会(Web), 2015

  
• CsBr保護膜付与によるCs‐Te光陰極寿命改善効果に関する研究

  全炳俊; 栂村勇輔; SUPHAKUL Sikharin; 紀井俊輝; 増田開; 大垣英明

  日本加速器学会年会(Web), 2015

  
• 京都大学エネルギー理工学研究所における中赤外自由電子レーザ開発

  全炳俊; 紀井俊輝; 増田開; 大垣英明

  日本赤外線学会研究発表会資料, 2015

  
• 陰極近傍における鏡像効果による電子ビームエミッタンス増減現象の電子銃パラメータ依存性

  野儀武志; 増田開; 山下大樹; 守田健一; TORGASIN Konstantin; 桂山翼; 村田智哉; SIKHARIN Suphakul; ZEN Heishun; 紀井俊輝; 長崎百伸; 大垣英明

  日本加速器学会年会(Web), 2015

  
• 高周波電子銃中LaB₆陰極からのマルチバンチ光電子ビーム発生とそれを用いた中赤外自由電子レーザ発振

  ZEN Heishun; 黒田隆之助; 平義隆; SUPHAKUL Sikharin; 紀井俊輝; 増田開; 大垣英明

  日本加速器学会年会(Web), 2015

  
• アンチストークスラマン散乱分光を用いた中赤外自由電子レーザーによる選択的格子振動励起の直接観測

  吉田恭平; 園部太郎; 全 炳俊; 蜂谷 寛; 村田智哉; 栂村勇輔; 犬飼元晴; Sikharin Suphakul; Negm Hani; Konstantin Torgasin; 紀井俊輝; 増田 開; 大垣英明

  第28回日本放射光学会年会・放射光科学合同シンポジウム, 立命館大学びわこ･くさつキャンパス, Jan. 2015, Peer-reviewed

  
• 陰極近傍における鏡像効果によるエミッタンス増減現象の電子銃パラメータ依存性

  野儀武志; 増田開; 山下大樹; 村田智哉; 犬飼元晴; 栂村勇輔; Sikharin Suphakul; 吉田 恭平; Konstantin Torgasin; 全炳俊; 紀井俊輝; 長﨑百伸; 大垣英明

  第12回高輝度高周波電子銃研究会, Jan. 2015

  
• Development of Compact Seeded Terahertz Free-Electron Laser Amplifier System at Kyoto University

  S. Suphakul; K. Damminsak; H. Zen; T. Kii; H. Ohgaki

  2015 40TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES (IRMMW-THZ), 2015

  
• 24aDE-4 Direct Observations of Microbunching Instability of Relativistic Electron Bunch Using an Ultrafast YBCO detector

  Hosaka M; Scheuring A; Hofherr M; Ilin K; Wunsch S; Siegel M; Roussel E; Evain C; Szwaj C; Bielawski S; Yamamoto N; Takashima Y; Konomi T; Adachi M; Katoh M; Zen H; Raasch J; Thoma P

  Meeting Abstracts of the Physical Society of Japan, 2015

  
• 21aCP-5 Detection of phase transition with single pulse associated with laser irradiation and evaluation of temperature alteration

  Mizobata K; Sandeep Maurya; Nakajima T; Zen H; Kii T; Ohgaki H

  Meeting Abstracts of the Physical Society of Japan, 2015

  
• Beam injection with pulsed multipole magnet at UVSOR-III

  N. Yamamoto; H. Zen; M. Hosaka; T. Konomi; M. Adachi; K. Hayashi; J. Yamazaki; Y. Takashima; M. Katoh

  NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Dec. 2014

  
• バルク超伝導体アレイによる磁場分布制御法

  紀井俊輝; 吉田恭平; NEGM Hani; TORGASIN Konstantin; SUPHAKUL Sikharin; 栂村勇輔; 犬飼元晴; 村田友哉; ZEN Heishun; 増田開; 大垣英明

  低温工学・超電導学会講演概要集, 05 Nov. 2014

  
• ポンププローブ実験に向けた中赤外FELとピコ秒レーザの同時照射システムの開発

  村田智哉; 吉田恭平; 園部太郎; 全 炳俊; 蜂谷 寛; 栂村勇輔; 犬飼元晴; Sikharin Suphakul; Negm Hani; Konstantin Torgasin; 紀井俊輝; 増田 開; 大垣英明

  第24回（平成26年度）日本赤外線学会研究発表会, 大阪府立大学中百舌鳥キャンパス, Nov. 2014, Peer-reviewed

  
• 中赤外自由電子レーザーを用いた有機薄膜の相変化観測 I―薄膜作成と特性評価―

  AGEEV Eduard; 溝端圭介; 井阪勇貴; 中嶋隆; ZEN H; 紀井俊輝; 大垣英明

  応用物理学会秋季学術講演会講演予稿集(CD-ROM), 01 Sep. 2014

  
• Characterization of non-Gaussian mid-infrared free-electron laser beams by the knife-edge method

  Yu Qin; Takashi Nakajima; Heishun Zen; Xiaolong Wang; Toshiteru Kii; Hideaki Ohgaki

  INFRARED PHYSICS & TECHNOLOGY, Sep. 2014

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• UVSORにおける逆コンプトン散乱ビームライン計画

  全炳俊; 紀井俊輝; 大垣英明; 加藤政博; 早川岳人; 静間俊行

  日本原子力学会秋の大会予稿集(CD-ROM), 22 Aug. 2014

  
• 7pAJ-10 Fabrication of Au-nanoparticle-doped polymer films for the time-resolved study of structure change using a mid-IR FEL

  Mizobata K; Isaka Y; Eduard Ageev; Zen H; Kii T; Nakajima T; Ohgaki H

  Meeting abstracts of the Physical Society of Japan, 22 Aug. 2014

  
• Microbunching Instability in Relativistic Electron Bunches: Direct Observations of the Microstructures Using Ultrafast YBCO Detectors

  E. Roussel; C. Evain; C. Szwaj; S. Bielawski; J. Raasch; P. Thoma; A. Scheuring; M. Hofherr; K. Ilin; S. Wuensch; M. Siegel; M. Hosaka; N. Yamamoto; Y. Takashima; H. Zen; T. Konomi; M. Adachi; S. Kimura; M. Katoh

  PHYSICAL REVIEW LETTERS, Aug. 2014

  
• バルク超伝導体を用いた革新的アンジュレータの開発

  紀井俊輝; 全炳俊; 大垣英明

  京都大学低温物質科学研究センター誌, Jun. 2014

  
• Transient response of relativistic electron bunches to wave-number selected perturbations near the micro-bunching instability threshold

  E. Roussel; C. Evain; M. Le Parquier; C. Szwaj; S. Bielawski; M. Hosaka; N. Yamamoto; Y. Takashima; M. Shimada; M. Adachi; H. Zen; S. Kimura; M. Katoh

  NEW JOURNAL OF PHYSICS, Jun. 2014

  
• 27aTM-2 Optical System for a Direction Variable Laser Compton Scattering Gamma-ray Source

  Kii Toshiteru; Yoshida Kyohei; Negm Hani; Konstantin Torgasin; Sikharin Suphakul; Okumura Kensuke; Mishima Kenta; Inukai Motoharu; Zen Heishun; Masuda Kai; Ohgaki Hideaki

  Meeting abstracts of the Physical Society of Japan, 05 Mar. 2014

  
• 中赤外自由電子レーザー(KU‐FEL)のパルス特性評価と時間分解分光への光源整備

  WANG Xiaolong; 中嶋隆; QIN Yu; ZEN H; 紀井俊輝; 大垣英明

  応用物理学会春季学術講演会講演予稿集(CD-ROM), 03 Mar. 2014

  
• アンチストークスラマン散乱測定法を用いた中赤外FELによる選択的格子振動励起の原理実証

  吉田恭平; 園部太郎; 全 炳俊; 蜂谷 寛; 高見 清; 奥村健祐; 栂村勇輔; 犬飼元晴; 三島健太; SIKHARIN SUPHAKUL; NEGM HANI; KONSTANTIN TORGASIN; MOHAMED OMER; 紀井俊輝; 増田 開; 大垣英明

  第20回FEL研究会, 日本大学理工学部駿河台校舎, Mar. 2014, Peer-reviewed

  
• ラマン散乱測定法を用いた中赤外レーザーによる選択的格子振動励起の直接観測

  吉田恭平; 園部太郎; 全 炳俊; 蜂谷 寛; 奥村健介; 三島健太; ハニ ネギム; コンスタンティン トーガシン; モハメド オマル; 紀井俊輝; 増田 開; 大垣英明

  第 61 回応用物理学会春季学術講演会, 青山学院大学相模原キャンパス, Mar. 2014, Peer-reviewed

  
• 狭帯域検出器を用いたコヒーレント放射光観測によるバンチ長評価の研究

  清紀弘; 小川博嗣; 早川建; 田中俊成; 早川恭史; 中尾圭佐; 境武志; 野上杏子; 稲垣学; 全炳俊; 大垣英明

  日本放射光学会年会・放射光科学合同シンポジウム予稿集, 11 Jan. 2014

  
• 中性子/ガンマ線による核物質探査非破壊検査

  大垣英明; 増田開; 三澤毅; 紀井俊輝; ZEN H; 堀利匡; 大東出; 羽島良一; 早川岳人; 静間俊行; 神門正城

  レーザー学会研究会報告, 08 Jan. 2014

  
• アンチストークスラマン散乱分光法を用いた中赤外自由電子レーザーによる選択的格子振動励起の直接観測

  吉田恭平; 園部太郎; 全炳俊; 蜂谷寛; 村田智哉; 栂村勇輔; 犬飼元晴; SUPHAKUL Sikharin; HANI Negm; TORGASIN Konstantin; 紀井俊輝; 増田開; 大垣英明

  日本赤外線学会研究発表会資料, 2014

  
• 京都大学KU‐FELにおけるコヒーレントシンクロトロン放射光源の開発

  清紀弘; 全炳俊; 大垣英明

  日本赤外線学会研究発表会資料, 2014

  
• Numerical study of the microbunching instability at UVSOR-III: Influence of the resistive and inductive impedances

  E. Roussel; C. Evain; C. Szwaj; S. Bielawski; J. Raasch; P. Thoma; A. Scheuring; K. Ilin; M. Siegel; M. Hosaka; N. Yamamoto; Y. Takashima; H. Zen; T. Konomi; M. Adachi; S. Kimura; M. Katoh

  IPAC 2014: Proceedings of the 5th International Particle Accelerator Conference, 01 Jan. 2014

  
• Electrical field sensitive high-t<inf>c</inf> YBCO detector for real-time observation of CSR

  J. Raasch; K. S. Ilin; A. Scheuring; M. Siegel; P. Thoma; A. S. Mueller; Y. L. Mathis; N. J. Smale; B. Holzapfel; K. Iida; S. Bielawski; C. Evain; E. Roussel; C. Szwaj; M. Katoh; S. Kimura; T. Konomi; M. Hosaka; N. Yamamoto; H. Zen

  IPAC 2014: Proceedings of the 5th International Particle Accelerator Conference, 01 Jan. 2014

  
• Stabilization of mid-infrared fel by feedback controls

  H. Zen; K. Okumura; K. Takami; Y. Tsugamura; M. Inukai; K. Mishima; H. Negm; K. Torgasin; K. Yoshida; T. Kii; K. Masuda; H. Ohgaki

  IPAC 2014: Proceedings of the 5th International Particle Accelerator Conference, 01 Jan. 2014

  
• Beam Test of the Coaxial Cavity for the Thermionic Triode Type RF Gun

  K. Torgasin; K. Mishima; Motoharu Inukai; K. Okumura; T. Nogi; K. Yoshida; H. Negm; M. Omer; H. Zen; T. Kii; K. Nagasaki; K. Masuda; H. Ohgaki

  2014 TENTH INTERNATIONAL VACUUM ELECTRON SOURCES CONFERENCE (IVESC), 2014

  
• Development of beam position feedback control system in KU-FEL

  H. Ohgaki; H. Zen; Y. W. Choi; H. Imon; T. Kii; R. Kinjo; T. Konstantin; K. Masuda; H. Negm; K. Okumura; M. Omer; M. Shibata; K. Shimahashi; K. Yoshida

  IPAC 2013: Proceedings of the 4th International Particle Accelerator Conference, 24 Dec. 2013

  
• バルクMgB₂超伝導体を用いた放射光発生用アンジュレータの提案

  紀井俊輝; 吉田恭平; NEGM Hani; KONSTANTIN Torgasin; 奥村健佑; 三島健太; 犬飼元晴; ZEN Heishun; 増田開; 大垣英明

  低温工学・超電導学会講演概要集, 04 Dec. 2013

  
• 酸化亜鉛へのマイクロ波照射効果

  吉田恭平; 園部太郎; 全 炳俊; 蜂谷 寛; 奥村健祐; 三島健太; 犬飼元晴; Hani Negm; Konstantin Torgasin; Mohamed Omer; 金城良太; 紀井俊輝; 増田 開; 大垣英明

  UVSORシンポジウム2013, 自然科学研究機構 岡崎コンファレンスセンター, Dec. 2013, Peer-reviewed

  
• Numerical study on electron beam properties in triode type thermionic RF gun

  K. Mishima; K. Torgasin; K. Masuda; M. Inukai; K. Okumura; H. Negm; M. Omer; K. Yoshida; H. Zen; T. Kii; H. Ohgaki

  FEL 2013: Proceedings of the 35th International Free-Electron Laser Conference, 01 Dec. 2013

  
• Study on electron beam stabilization in ku-fel

  Kensuke Okumura; Heishun Zen; Motoharu Inukai; Yusuke Tsugamura; Kenta Mishima; Torgasin Konstantin; Hani Negm; Omer Mohamed; Kyohei Yoshida; Toshiteru Kii; Kai Masuda; Hideaki Ohgaki

  FEL 2013: Proceedings of the 35th International Free-Electron Laser Conference, 01 Dec. 2013

  
• Present status of kyoto university free electron laser

  H. Zen; M. Inukai; K. Okumura; K. Mishima; K. Torgasin; H. Negm; M. Omer; K. Yoshida; R. Kinjo; T. Kii; K. Masuda; H. Ohgaki

  FEL 2013: Proceedings of the 35th International Free-Electron Laser Conference, 01 Dec. 2013

  
• シミュレーションによる三極管型熱陰極高周波電子銃における電子ビーム特性に関する研究

  三島 健太; 増田 開; 犬飼 元晴; 奥村 健祐; KONSTANTIN; TORGASIN; NEGM HANI; OMER MAHAMED; 吉田 恭平; 全 炳俊; 紀井 俊輝; 大垣 英明

  第10回日本加速器学会年会, Aug. 2013

  
• Optimization of geometric configuration of detector system for non-destructive assay using nuclear resonance fluorescence

  Hani Negm; Mohamed Omer; Heishun Zen; Toshiteru Kii; Kai Masuda; Toshitada Hori; Hideaki Ohgaki; Ryoichi Hajima; Nobuhiro Kikuzawa; Toshiyuki Shizuma; Takehito Hayakawa; Izuru Daito; Hiroyuki Toyokawa

  IEEE Nuclear Science Symposium Conference Record, 2013

  
• Wide range automatic energy calibration of LaBr3:Ce detectors by the self-activity lines

  Mohamed Omer; Hani Negm; Heishun Zen; Toshiteru Kii; Kai Masuda; Hideaki Ohgaki; Izuru Daito; Ryoichi Hajima; Toshiyuki Shizuma; Takehito Hayakawa; Nobuhiro Kikuzawa

  IEEE Nuclear Science Symposium Conference Record, 2013

  
• KU‐FELにおける電子ビーム安定性に関する研究

  奥村健祐; 全炳俊; 犬飼元晴; 栂村勇輔; 三島健太; KONSTANTIN Torgasin; NEGM Hani; OMER Mohamed; 吉田恭平; 紀井俊輝; 増田開; 大垣英明

  日本加速器学会年会(Web), 2013

  
• Observation of high harmonic generation from SiC by MIR-FEL irradiation

  Kyohei Yoshida; Heishun Zen; Motoharu Inukai; Kensuke Okumura; Kenta Mishima; Kyohei Shimahashi; Marie Shibata; Hidekazu Imon; Hani Negm; Torgasin Konstantin; Mahamed Omer; Ryota Kinjo; Yong-Woon Choi; Toshiteru Kii; Kai Masuda; Hideaki Ohgaki

  10TH ECO-ENERGY AND MATERIALS SCIENCE AND ENGINEERING SYMPOSIUM, 2013

  
• Investigation of Electron Beam Parameter in Seeded THz-FEL Amplifier using Photocathode RF Gun

  Kyohei Shimahashi; Heishun Zen; Kensuke Okumura; Marie Shibata; Hidekazu Imon; Torgasin Konstantin; Hani Negm; Mohamed Omer; Kyohei Yoshida; Yong-Woon Choi; Ryota Kinjo; Kai Masuda; Toshiteru Kii; Hideaki Ohgaki

  10TH ECO-ENERGY AND MATERIALS SCIENCE AND ENGINEERING SYMPOSIUM, 2013

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• Active interrogation of nuclear materials using LaBr3: Ce detectors

  Mohamed Omer; H. Negm; H. Zen; T. Hori; T. Kii; K. Masuda; H. Ohgaki; R. Hajima; T. Hayakawa; O. Dait; T. Shizuma; M. Fujiwara; S. H. Park; N. Kikuzawa; G. Rusev; A. P. Tonchev; Y. K. Wu

  Energy Procedia, 2013

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• Concepts of 220-MEV racetrack microtron for non-destructive nuclear material detection system

  T. Hori; T. Kii; R. Kinjo; H. Ohgaki; M. Omer; H. Zen; R. Hajima; T. Hayakawa; I. Daito; M. Kando; H. Kotaki; F. Sakai

  IPAC 2013: Proceedings of the 4th International Particle Accelerator Conference, 2013

  
• Monte Carlo simulation of response function for LaBr3(Ce) detector and its internal-activity

  Hani Negm; Mohamed Omer; Heishun Zen; Izuru Daito; Toshiteru Kii; Kai Masuda; Toshitada Hori; Hideaki Ohgaki; Ryoichi Hajima; Takehito Hayakawa; Toshiyuki Shizuma; Nobuhiro Kikuzawa; Hiroyuki Toyokawa

  2013 3rd International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and Their Applications, ANIMMA 2013, 2013

  
• Feasibility of LaBr3(Ce) detector to measure nuclear resonance fluorescence from special nuclear materials

  Mohamed Omer; Hani Negm; Heishun Zen; Izuru Daito; Toshiteru Kii; Kai Masuda; Hideaki Ohgaki; Ryoichi Hajima; Toshiyuki Shizuma; Takehito Hayakawa; Nobuhiro Kikuzawa

  2013 3rd International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and Their Applications, ANIMMA 2013, 2013

  
• Performance of LaBr3(Ce) array detector system for non-destructive inspection of special nuclear material by using nuclear resonance fluorescence

  Mohamed Omer; Hideaki Ohgaki; Hani Negm; Izuru Daito; Toshitada Hori; Toshiteru Kii; Heishun Zen; Ryoichi Hajima; Takehito Hayakawa; Toshiyuki Shizuma; Mamoru Fujiwara

  2013 IEEE International Conference on Technologies for Homeland Security, HST 2013, 2013

  
• Design and Construction of UVSOR-III

  M. Adachi; H. Zen; T. Konomi; J. Yamazaki; K. Hayashi; M. Katoh

  11TH INTERNATIONAL CONFERENCE ON SYNCHROTRON RADIATION INSTRUMENTATION (SRI 2012), 2013, Peer-reviewed

  
• Development of a field measurement system for the Bulk HTSC SAU

  M. Shibata; R. Kinjo; Y. W. Choi; M. Omer; H. Negm; T. Konstantin; K. Yoshida; T. Komai; K. Shimahashi; H. Imon; K. Okumura; H. Zen; T. Kii; K. Masuda; H. Ohgaki

  11TH INTERNATIONAL CONFERENCE ON SYNCHROTRON RADIATION INSTRUMENTATION (SRI 2012), 2013, Peer-reviewed

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• Design study for direction variable compton scattering gamma ray

  T. Kii; M. Omer; H. Negm; Y. W. Choi; R. Kinjo; K. Yoshida; T. Konstantin; N. Kimura; K. Ishida; H. Imon; M. Shibata; K. Shimahashi; T. Komai; K. Okumura; H. Zen; K. Masuda; T. Hori; H. Ohgaki

  Journal of Physics: Conference Series, 2013, Peer-reviewed

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• Non-Destructive Inspection System for Hidden Special Nuclear Materials V

  Ohgaki Hideaki; Hajima Ryouichi; Shizuma Toshiyuki; Hori Toshitada; Fujimoto Shinya; Sakai Fumio; Kando Masaki; Misawa Tsuyoshi; Masuda Kai; Kii Toshiteru; Zen Heishun; Daito Izuru; Kajiwara Taiju; Omer Mohamed; Hayakawa Takehiko

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2013

  
• Report of Workshop on Beam Physics 2012 and Young Scientist Workshop on Beam Physics 2012

  全 炳俊

  加速器 : 日本加速器学会誌, 2013

  
• Development of multi-bunch laser system for photocathode RF gun in KU-FEL

  K. Shimahashi; H. Zen; T. Kii; K. Okumura; M. Shibata; H. Imon; T. Konstantin; H. Negm; M. Omer; K. Yoshida; Y. W. Choi; R. Kinjo; K. Masuda; H. Ohgaki; R. Kuroda

  FEL 2012 - 34th International Free Electron Laser Conference, 01 Dec. 2012

  
• Improvement of KU-FEL performance by replacing undulator and optical cavity

  H. Zen; K. Okumura; K. Shimahashi; M. Shibata; H. Imon; T. Konstantin; H. Negm; M. Omer; K. Yoshida; Y. W. Choi; R. Kinjo; M. A. Bakr; T. Kii; K. Masuda; H. Ohgaki

  FEL 2012 - 34th International Free Electron Laser Conference, 01 Dec. 2012

  
• マイクロ波処理 ZnO の電子状態の解析

  吉田恭平; 全 炳俊; 蜂谷 寛; 園部太郎; 紀井俊輝; 増田 開; 大垣英明

  UVSORシンポジウム2012, 自然科学研究機構 岡崎コンファレンスセンター, Nov. 2012, Peer-reviewed

  
• 25aGB-2 Development of the Short-period Undulator using Bulk High Temperature Superconductor

  Kii Toshiteru; Kinjo Ryota; Kimura Naoki; Woon Choi Yong; Abdelsanad Mohamed Omer Nagy; Hussein Negm Hani; Yoshida Kyohei; Ishida Keiichi; Bakr Arby Mahmoud; Abdel Aziem; Sonobe Taro; Choi Yong-Woon; Masuda Kai; Ohgaki Hideaki; Takasaki Masato; Ueda Satoshi

  Meeting abstracts of the Physical Society of Japan, 05 Mar. 2012

  
• Status of Mid-Infrared Free-Electron Laser Facility in Kyoto University

  H. Zen; K. Shimahashi; M. Shibata; H. Negm; T. Konstantin; K. Yoshida; M. Omer; R. Kinjo; Y. W. Choi; T. Kii; K. Masuda; H. Ohgaki

  2012 37TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ), 2012

  
• Use of Fringe-Resolved Autocorrelation for the diagnosis of the wavelength stability of a FEL

  Y. Qin; T. Kii; T. Nakajima; H. Ohgaki; X. Wang; H. Zen

  34th International Free Electron Laser Conference (FEL2012)，奈良新公会堂，2012.8.26-31, 2012, Peer-reviewed

  
• Toward the Single-shot Measurement of Mid-infrared FEL Pulse Spectra

  T. Nakajima; T. Kii; H. Ohgaki; Y. Qin; X. Wang; H. Zen

  34th International Free Electron Laser Conference (FEL2012)，奈良新公会堂，2012.8.26-31, 2012, Peer-reviewed

  
• PIT formation on dental hard tissues using two different free electron laser sources, lebra-fel and Ku-Fel

  T. Sakae; T. Kuwada; Y. Hayakawa; T. Tanaka; K. Nakao; M. Inagaki; K. Nogami; K. Hayakawa; I. Sato; H. Zen; T. Kii; H. Ohgaki

  FEL 2012 - 34th International Free Electron Laser Conference, 2012, Peer-reviewed

  
• Design and numerical simulation of THz-FEL amplifier in Kyoto university

  M. Bakr; K. Shimahashi; K. Yoshida; H. Negm; M. Omer; R. Kinjo; Y.W. Choi; H. Zen; T. Kii; K. Masuda; H. Ohgaki

  FEL 2012 - 34th International Free Electron Laser Conference, 2012, Peer-reviewed

  
• Construction and commissioning of coherent light source experiment station at UVSOR

  S.-I. Tanaka; M. Adachi; K. Hayashi; M. Katoh; S.-I. Kimura; E. Nakamura; J.-I. Yamazaki; M. Hosaka; Y. Takashima; Y. Taira; N. Yamamoto; S. Radiation; T. Takahash; H. Zen

  FEL 2012 - 34th International Free Electron Laser Conference, 2012, Peer-reviewed

  
• Pulse structure measurement of near-infrared FEL in burst-mode operation of LEBRA linac

  K. Nakao; K. Hayakawa; Y. Hayakawa; M. Inagaki; K. Nogami; T. Sakai; T. Tanaka; H. Zen

  FEL 2012 - 34th International Free Electron Laser Conference, 2012, Peer-reviewed

  
• Practical design of resonance frequency tuning system for coaxial rf cavity for thermionic triode RF gun

  K. Torgasin; H. Imon; M. Takasaki; R. Kinjo; Y.W. Choi; M. Omer; K. Yoshida; H. Negm; K. Shimahashi; M. Shibata; K. Okumura; H. Zen; T. Kii; K. Masuda; K. Nagasaki; H. Ohgaki

  FEL 2012 - 34th International Free Electron Laser Conference, 2012, Peer-reviewed

  
• Observation of high harmonic generation from 6h-SiC irradiated by MIR-FEL

  K. Yoshida; H. Zen; K. Okumura; K. Shimahashi; M. Shibata; T. Komai; H. Imon; H. Negm; M. Omer; Y.W. Choi; R. Kinjo; T. Kii; K. Masuda; H. Ohgaki

  FEL 2012 - 34th International Free Electron Laser Conference, 2012, Peer-reviewed

  
• Detection of photon-induced excitations in ²³⁵U with LaBr 3:Ce scintillating detectors

  Mohamed Omer; Hani Negm; Heishun Zen; Toshitada Hori; Toshiteru Kii; Kai Masuda; Hideaki Ohgaki; Ryoichi Hajima; Takehito Hayakawa; Izuru Daito; Toshiyuki Shizuma; Mamoru Fujiwara; Seong Hee Park; Nobuhiro Kikuzawa; Gencho Rusev; Anton P. Tonchev; Ying K. Wu

  IEEE Nuclear Science Symposium Conference Record, 2012, Peer-reviewed

  
• Practical field generation by bulk HTSC staggered array undulator

  Kinjo Ryota; Masuda Kai; Nagasaki Kazunobu; Ohgaki Hideaki; Kii Toshiteru; Choi Yong-Woon; Omer Mohamed; Yoshida Kyohei; Negm Hani; Shibata Marie; Shimahashi Kyohei; Zen Heishun

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2012

  
• Shape measurement of PWO scintillation pulse with electron beams

  NAKAMURA Naoto; UOZUMI Yusuke; NOGAMINE Sho; OHGAKI Hideaki; KII Toshiteru; ZEN Heishun

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2012

  
• Non-Destructive Inspection System for Hidden Special Nuclear Materials IV

  Ohgaki Hideaki; Hayakawa Takehito; Kajiwara Yasuki; Kando Masaki; Daito Izuru; Sakai Fumio; Fujimoto SHinnya; Misawa Tsuyoshi; Pyeon Cheolho; Masuda Kai; Kii Toshiteru; Zen Heishun; Hori Toshitada; Omer Mohamed; Hajima Ryouichi

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2012

  
• Improvement of beam directioin field of bulk HTSC staggered array undulator

  Shibata Marie; Mohamed Omer; Choi Yong-Woon; Sonobe Taro; Zen Heishun; Masuda Kai; Ohgaki Hideaki; Kimura Naoki; Kinjo Ryota; Kii Toshiteru; Komai Takuya; Shimahashi Kyohei; Ishida Keiichi; Hani Negm; Yoshida Kyohei

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2012

  
• Comparison between calculation and experiment after installing 1.8m undulator for KU-FEL

  Shimahashi Kyohei; Shibata Marie; Sonobe Taro; Zen Heishun; Masuda Kai; Kii Toshiteru; Ohgaki Hideaki; Ishida Keiichi; Kinjo Ryota; Choi Yong-Woon; Mohamed Omer; Yoshida Kyohei; Hani Negm; Kimura Naoki; Komai Takuya

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2012

  
• Assessment of thermionic emission properties and back bombardment effects for LaB6 and CeB6

  Mahmoud Bakr; R. Kinjo; Y. W. Choi; M. Omer; K. Yoshida; K. Ishida; N. Kimura; T. Komai; M. Shibata; K. Shimahashi; H. Imon; T. Sonobe; H. Zen; M. Kawai; T. Kii; K. Masuda; H. Ohgaki

  FEL 2011 - 33rd International Free Electron Laser Conference, 01 Dec. 2011

  
• Evaluation of lasing range with A 1.8 M undulator in KU-FEL

  K. Ishida; M. A. Bakr; R. Kinjo; Y. W. Choi; M. Omer; K. Yoshida; N. Kimura; T. Komai; M. Shibata; K. Shimahashi; H. Imon; H. Zen; T. Sonobe; K. Masuda; T. Kii; H. Ohgaki

  FEL 2011 - 33rd International Free Electron Laser Conference, 01 Dec. 2011

  
• 高温超伝導バルク磁石を用いたスタガードアレイアンジュレータへの強磁性体の導入による磁場増強

  金城良太; 紀井俊輝; 木村尚樹; BAKR M. A; CHOI Y. W; OMER M; 吉田恭平; 石田啓一; 井門秀和; 駒井琢也; 柴田茉莉江; 島橋享兵; 全炳俊; 園部太郎; 増田開; 長崎百伸; 大垣英明

  日本原子力学会秋の大会予稿集(CD-ROM), 02 Sep. 2011

  
• Terahertz Coherent Synchrotron Radiation Probed with Electro-Optic Sampling Method

  I. Katayama; H. Shimosato; M. Bito; K. Furusawa; M. Adachi; M. Shimada; H. Zen; S. Kimura; N. Yamamoto; M. Hosaka; M. Katoh; M. Ashida

  Mar. 2011, Peer-reviewed

  
• Enhancement of Undulator Field in Bulk HTSC Staggered Array Undulator with Hybrid Configuration

  R. Kinjo; T. Kii; N. Kimura; M.A. Bakr; Y.W. Choi; M. Omer; K. Yoshida; K. Ishida; H. Imon; T. Komai; M. Shibata; K. Shimahashi; H. Zen; T. Sonobe; K. Masuda; K. Nagasaki; H. Ohgaki

  33rd International Free Electron Laser Conference 2011，WEPB19，2011, 2011, Peer-reviewed

  
• Status and Upgrade Program of UVSOR Accelerators

  M. Adachi; K. Hayashi; J. Yamazaki; M. Katoh; H. Zen

  The second International Particle Accelerator Conference (IPAC-11)，San Sebastian, Spain，2011.9.4-9, 2011, Peer-reviewed

  
• Injection of a Free Electron Laser Oscillator with an External Laser

  C. Szwaj; S. Bielawski; T. Tanikawa; M. Adachi; M. Katoh; H. Zen; M. Hosaka; N. Yamamoto

  Proc. of FEL 2011，2011, 2011, Peer-reviewed

  
• Development of pulse width measurement techniques in a picosecond range of ultra-short gamma ray pulses

  Y. Taira; N. Yamamoto; M. Hosaka; K. Soda; M. Adachi; H. Zen; T. Tanikawa; M. Katoh

  IPAC 2011 - 2nd International Particle Accelerator Conference, 2011, Peer-reviewed

  
• Saturation effect on VUV coherent harmonic generation at UVSOR-II

  T. Tanikawa; M. Adachi; M. Katoh; J. Yamazaki; H. Zen; Y. Taira; M. Hosaka; N. Yamamoto

  IPAC 2011 - 2nd International Particle Accelerator Conference, 2011, Peer-reviewed

  
• Technical developments for injecting external laser to a storage ring FEL in CW and Q-switched operation

  H. Zen; M. Adachi; M. Katoh; C. Szwaj; S. Bielawski; M. Hosaka

  FEL 2011 - 33rd International Free Electron Laser Conference, 2011, Peer-reviewed

  
• Chirped pulse generation by CHG-FEL

  H. Zen; M. Adachi; M. Katoh; T. Tanikawa; N. Yamamoto; M. Hosaka

  FEL 2011 - 33rd International Free Electron Laser Conference, 2011, Peer-reviewed

  
• Present status and future prospects of project on utilizing coherent light sources for user experiments at UVSOR-II

  H. Zen; M. Adachi; J. Yamazaki; K. Hayashi; E. Nakamura; S. Kimura; M. Katoh; T. Takahashi; N. Yamamoto; M. Hosaka; Y. Takashima

  FEL 2011 - 33rd International Free Electron Laser Conference, 2011, Peer-reviewed

  
• Development of material analysis facility in KU-FEL

  K. Yoshida; T. Sonobe; H. Zen; M.A. Bakr; Y.W. Choi; M. Omer; R. Kinjo; K. Ishida; N. Kimura; K. Shimahashi; T. Komai; M. Shibata; H. Imon; T. Kii; K. Masuda; H. Ohgaki

  FEL 2011 - 33rd International Free Electron Laser Conference, 2011, Peer-reviewed

  
• Generation of energy-Tunable and polarized gamma rays via laser compton scattering

  Y. Taira; N. Yamamoto; M. Hosaka; K. Soda; M. Adachi; H. Zen; M. Katoh; T. Tanikawa

  Proceedings of the 25th Workshop on Radiation Detectors and Their Uses, 2011, Peer-reviewed

  
• Development of pulse width measurement technique of ultra-short gamma ray pulse

  Taira Yoshitaka; Adachi Masahiro; Zen Heisyun; Tanikawa Takanori; Yamamoto Naoto; Hosaka Masahito; Soda Kazuo; Katoh Masahiro

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2011

  
• コヒーレントシンクロトロン放射光テラヘルツ波の電場検出

  片山郁文; 下里弘; 尾藤道隆; 古澤慧; 阿達正浩; 阿達正浩; 島田美帆; ZEN Heishun; ZEN Heishun; 木村真一; 木村真一; 山本尚人; 保坂将人; 加藤政博; 加藤政博; 芦田昌明; 芦田昌明

  応用物理学関係連合講演会講演予稿集(CD-ROM), 03 Mar. 2010

  
• コヒーレントシンクロトロン放射光のテラヘルツ電場計測

  片山郁文; 下里弘; 尾藤道隆; 古澤慧; 阿達正浩; 阿達正浩; 島田美帆; ZEN Heishun; ZEN Heishun; 木村真一; 木村真一; 山本尚人; 保坂将人; 加藤政博; 加藤政博; 芦田昌明; 芦田昌明

  日本物理学会講演概要集, 01 Mar. 2010

  
• Saturation phenomena of VUV CHG AT UVSOR-II

  Tanikawa T; Adachi M; Katoh M; Yamazaki J; Zen H; Hosaka M; Taira Y; Yamamoto N

  FEL 2010 - 32nd International Free Electron Laser Conference, 2010, Peer-reviewed

  
• Spectral measument of VUV CHG at UVSOR-II

  Tanikawa T; Adachi M; Katoh M; Yamazaki J; Zen H; Hosaka M; Taira Y; Yamamoto N

  IPAC 2010 - 1st International Particle Accelerator Conference, 2010, Peer-reviewed

  
• Status of top-up operation in UVSOR-II

  Zen H; Adachi M; Katoh M; Hayashi K; Yamazaki J; Tanikawa T; Taira Y; Hosaka M; Yamamoto N

  IPAC 2010 - 1st International Particle Accelerator Conference, 2010, Peer-reviewed

  
• THz field detection of the coherent synchrotron radiation produced by laser bunch slicing

  I. Katayama; H. Shimosato; M. Bito; K. Furusawa; M. Adachi; M. Shimada; H. Zen; S.-I. Kimura; N. Yamamoto; M. Hosaka; M. Katoh; M. Ashida

  Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference: 2010 Laser Science to Photonic Applications, CLEO/QELS 2010, 2010, Peer-reviewed

  
• Proposal of a Bulk HTSC Staggered Array Undulator

  Toshiteru Kii; Ryota Kinjo; Mahmoud A. Bakr; Taro Sonobe; Keisuke Higashimura; Kai Masuda; Hideaki Ohgaki; Kyohei Yoshida; Heisyun Zen

  SRI 2009: THE 10TH INTERNATIONAL CONFERENCE ON SYNCHROTRON RADIATION INSTRUMENTATION, 2010, Peer-reviewed

  
• Full Energy Injection and Top-up Operation at UVSOR-II

  Masahiro Katoh; Masahiro Adachi; Heishun Zen; Jun-ichiro Yamazaki; Kenji Hayashi; Akira Mochihashi; Miho Shimada; Masahito Hosaka

  SRI 2009: THE 10TH INTERNATIONAL CONFERENCE ON SYNCHROTRON RADIATION INSTRUMENTATION, 2010, Peer-reviewed

  
• Status and Prospects of Coherent Light Source Developments at UVSOR-II

  Masahiro Adachi; Masahiro Katoh; Heishun Zen; Takanori Tanikawa; Masahito Hosaka; Yoshifumi Takashima; Naoto Yamamoto; Yoshitaka Taira

  SRI 2009: THE 10TH INTERNATIONAL CONFERENCE ON SYNCHROTRON RADIATION INSTRUMENTATION, 2010, Peer-reviewed

  
• FEL Beamline for Wide Tunable Range and Beam Sharing System at Kyoto University

  Mahmoud Bakr; K. Yoshida; K. Higashimura; S. Ueda; R. Kinjo; H. Zen; T. Sonobe; T. Kii; K. Masuda; H. Ohgaki

  WIRMS 2009: 5TH INTERNATIONAL WORKSHOP ON INFRARED MICROSCOPY AND SPECTROSCOPY WITH ACCELERATOR BASED SOURCES, 2010, Peer-reviewed

  
• Measurement and Correction of Bunch Phase Shift Caused by Back-bombardment Effect in a Therminonic RF Gun

  Zen Heishun; Kii Toshiteru; BAKR ARABY MAHMOUD; ABDEL AZIEM; Kinjo Ryota; Choi Yong Woon; Masuda Kai; Ohgaki Hideaki

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2010

  
• Development of ultra-short gamma ray pulse source via laser Compton scattering

  Taira Yoshitaka; Adachi Masahiro; Zen Heisyun; Tanikawa Takanori; Yamamoto Naoto; Hosaka Masahito; Soda Kazuo; Katoh Masahiro

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2010

  
• 電子蓄積リングとレーザーバンチスライス法を用いたコヒーレントなテラヘルツ光源の開発

  山本尚人; 保坂将人; 島田美帆; 阿達正浩; 阿達正浩; 全炳俊; 全炳俊; 谷川貴紀; 平義隆; 高嶋圭史; 木村真一; 木村真一; 高橋俊晴; 加藤政博; 加藤政博; 加藤政博

  日本放射光学会年会・放射光科学合同シンポジウム予稿集, 10 Dec. 2009

  
• Slippage effect on the table-top THz FEL amplifier project in Kyoto University

  T. Kii; K. Higasimura; M.A. Bakr; R. Kinjo; K. Yoshida; S. Ueda; K. Masuda; H. Ohgaki; T. Sonobe; H. Zen

  FEL 2009 - 31st International Free Electron Laser Conference, 01 Dec. 2009

  
• バルク高温超伝導磁石を用いたアンジュレータの11周期試作機の実験結果

  金城良太; 紀井俊輝; MAHMOUD Bakr; 東村圭祐; 吉田恭平; 上田智史; 園部太郎; 増田開; 長崎百伸; 大垣英明; ZEN Heishun

  日本原子力学会秋の大会予稿集(CD-ROM), 28 Aug. 2009

  
• 27pZB-4 Generation of Periodic Magnetic Field using Bulk High Tc Superconductor

  Kii Toshiteru; Kinjo Ryota; Zen Heisyun; Bakr Mahmoud A; Higashimura Keisuke; Yoshida Kyohei; Sonobe Taro; Masuda Kai; Ohgaki Hideaki

  Meeting abstracts of the Physical Society of Japan, 03 Mar. 2009

  
• Present status of UVSOR-II FEL

  Zen H; Adachi M; Hayashi K; Katoh M; Yamazaki J; Tanikawa T; Hosaka M; Koike M; Taira Y; Uno Y; Yamamoto N

  FEL 2009 - 31st International Free Electron Laser Conference, 2009, Peer-reviewed

  
• 27pZB-4 Generation of Periodic Magnetic Field using Bulk High Tc Superconductor

  Kii Toshiteru; Kinjo Ryota; Zen Heisyun; Bakr Mahmoud A; Higashimura Keisuke; Yoshida Kyohei; Sonobe Taro; Masuda Kai; Ohgaki Hideaki

  Meeting Abstracts of the Physical Society of Japan, 2009

  
• Mir-FEL with 4.5-cell thermionic RF-gun

  T. Kii; H. Zen; K. Higasimura; R. Kinjo; K. Masuda; H. Ohgaki

  Proceedings of the 24th Linear Accelerator Conference, LINAC 2008, 2009, Peer-reviewed

  
• Status of VUV CHG at UVSOR-II

  T. Tanikawa; M. Adachi; M. Katoh; J. Yamazaki; H. Zen; M. Hosaka; Y. Taira; N. Yamamoto

  FEL 2009 - 31st International Free Electron Laser Conference, 2009, Peer-reviewed

  
• Numerical evaluation of bulk htsc staggered array undulator by Bean model

  R. Kinjo; T. Kii; M.A. Bakr; K. Higashimura; K. Yoshida; S. Ueda; K. Masuda; K. Nagasaki; H. Ohgaki; T. Sonobe; H. Zen

  FEL 2009 - 31st International Free Electron Laser Conference, 2009, Peer-reviewed

  
• Status of the MIR-FEL facility in Kyoto University

  H. Ohgaki; T. Kii; K. Masuda; M.A. Bakr; K. Higashimura; R. Kinjo; K. Yoshida; S. Ueda; T. Sonobe; H. Zen; Y.U. Jeong

  FEL 2009 - 31st International Free Electron Laser Conference, 2009, Peer-reviewed

  
• Electron Energy Recovery Experiments on an Inertial Electrostatic Confinement Fusion Device

  Kajiwara Taiju; Masuda Kai; Zen Heishun; Nakagawa Tomoya; Nagasaki Kazunobu

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2009

  
• Low Pressure Operation on an Inertial Electrostatic Confinement Device with Magnetron Ion Source

  NAKAGAWA TOMOYA; MASUDA KAI; YOSHIKAWA KIYOSHI; NAGASAKI KAZUNOBI; ZEN HEISHUN; KAJIWARA TAIJU

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2009

  
• Development of MIR-Beamline at KU-FEL

  Kii Toshiteru; Ohgaki Hideaki; Masuda Kai; Sonobe Taro; Zen HEISHUN; Mahmoud A. Bakr; Higashimura Keisuke; Kinjo Ryota; Yoshida Kyohei

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2009

  
• The study on a tabletop THz FEL

  Higashimura Keisuke; Kinjo Ryota; Yoshida Kyouhei; Mahmoud A. Bakr; Zen Heishun; Sonobe Taro; Kii Toshiteru; Masuda Kai; Ohgaki Hideaki

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2009

  
• Improvement of a Bulk HTSC Staggered Array Undulator

  Kinjo Ryota; Ohgaki Hideaki; Kii Toshiteru; Zen Heishun; Mahmoud Bakr; Higashimura Keisuke; Yoshida Kyouhei; Sonobe Taro; Masuda Kai; Nagasaki Kazunobu

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2009

  
• 慣性静電閉じ込め核融合用円環状マグネトロンイオン源の開発

  中川知也; 増田開; 吉川潔; ZEN Heishun; 梶原泰樹; 金城良太; 長崎百伸

  日本原子力学会秋の大会予稿集(CD-ROM), 21 Aug. 2008

  
• 慣性静電閉じ込め核融合装置における電子エネルギーの回収

  梶原泰樹; 増田開; 吉川潔; ZEN Heishun; 中川知也; 金城良太; 長崎百伸

  日本原子力学会秋の大会予稿集(CD-ROM), 21 Aug. 2008

  
• 26aZL-8 Amplitude and Phase modulation of input RF pulses for beam stabilization in KU-FEL

  Kii Toshiteru; Masuda Kai; Zen Heisyun; Sasaki Satoshi; Shiiyama Takumi; Kinjo Ryota; Ohgaki Hideaki

  Meeting abstracts of the Physical Society of Japan, 29 Feb. 2008

  
• First lasing of MIR-FEL at Kyoto university

  H. Ohgaki; T. Kii; K. Masuda; K. Higashimura; R. Kinjo; H. Zen; K. Yoshikawa; T. Yamazaki; Y.U. Jeong

  30th International Free Electron Laser Conference, FEL 2008, 2008, Peer-reviewed

  
• 26aZL-8 Amplitude and Phase modulation of input RF pulses for beam stabilization in KU-FEL

  Kii Toshiteru; Masuda Kai; Zen Heisyun; Sasaki Satoshi; Shiiyama Takumi; Kinjo Ryota; Ohgaki Hideaki

  Meeting Abstracts of the Physical Society of Japan, 2008

  
• MIR-FEL facility for Energy Science at Kyoto University

  T Kii; R Kinjyo; H Zen; K Higashimura; K Masuda; H Ohgaki

  Linac08 ⅩⅩⅣ Linear Accelerator Conference, Victria Conference Centre, 2008.9.30, 2008, Peer-reviewed

  
• Beam loading compensation by rf detuning in a thermionic RF gun

  H. Zen; K. Higashimura; T. Kii; R. Kinjo; K. Masuda; H. Ohgaki

  30th International Free Electron Laser Conference, FEL 2008, 2008, Peer-reviewed

  
• A bulk high-TC superconductor staggered array undulator

  R. Kinjo; T. Kii; H. Zen; K. Higashimura; K. Masuda; K. Nagasaki; H. Ohgaki; Y.U. Jeong

  30th International Free Electron Laser Conference, FEL 2008, 2008, Peer-reviewed

  
• Design study on THz seeded FEL using photocathode RF gun and short period undulator

  T. Kii; K. Higasimura; H. Zen; R. Kinjo; K. Masuda; H. Ohgaki; R. Kuroda; Y.U. Jeong

  30th International Free Electron Laser Conference, FEL 2008, 2008, Peer-reviewed

  
• Improvement of Energy Distribution Using Microwave Amplitude Control for Free Electron Laser Driver Linac

  Zen Heishun; Kii Toshiteru; Ohgaki Hideaki; Shiiyama Takumi; Sasaki Satoshi; Masuda Kai

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2008

  
• Development of Multi-bunch Photo-Cathode RF Gun in Kyoto University

  KII TOSHITERU; URAKAWA JUNJI; SAKAUE KAZUYUKI; MURATA AKI; WASHIO MASAKAZU; OHGAKI HIDEAKI; MASUDA KAI; ZEN HEISYUN; SASAKI SATOSHI; SIIYAMA TAKUMI; KURODA RYUNOSUKE; KURIKI MASAO; TERUNUMA NOBUHIRO

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2008

  
• Development of Thermionic RF Triode Gun

  masuda kai; shiiyama takumi; kannno koichi; ohgaki hideaki; kii toshiteru; zen heishun; sasaki satoshi; tanabe eiji

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2008

  
• Design Study on new type of High-Tc Super-Conducting Undulator (I)

  KII TOSHITERU; KINJO RYOTA; OHGAKI HIDEAKI; MASUDA KAI; ZEN HEISYUN; SASAKI SATOSHI; SIIYAMA TAKUMI

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2008

  
• Energy compensation by RF detuning in thermionic RF gun

  Zen Heishun; Kii Toshiteru; Masuda Kai; Kinjo Ryota; Higashimura Keisuke; Nagasaki Kazunobu; Ohgaki Hideaki

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2008

  
• Frequency control and phase and amplitude modulation of the input RF pulses in the KU-FEL diver linac

  KII TOSHITERU; ZEN Heishun; KINJO RYOTA; HIGASHIMURA KEISUKE; MASUDA KAI; OHGAKI HIDEAKI

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2008

  
• Design Study on new type of High-Tc Super-Conducting Undulator

  Kinjo Ryota; Kii Toshiteru; Zen Heishun; Higashimura Keisuke; Nagasaki Kazunobu; Masuda Kai; Ohgaki Hideaki

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2008

  
• Present Status of FEL System in Kyoto Univeristy

  Ohgaki Hideaki; Kii Toshiteru; Masuda Kai; Zen Heishun; Sasaki Satoshi; Shiiyama Takumi

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2008

  
• 三極管構造熱陰極型高周波電子銃の設計

  椎山拓己; 増田開; ZEN Heishun; 紀井俊輝; 大垣英明; 菅野浩一; 田辺英二

  日本原子力学会秋の大会予稿集(CD-ROM), 07 Sep. 2007

  
• Beam Charge Feedback System for Thermionic RF Gun

  H Ohgaki; T Kii; K Masuda; T Yamazaki; K Yoshikawa; H Zen

  2007 Particle Accelerator Conference，Albuquerque, New Mexico, USA，2007.6.25-29, 2007, Peer-reviewed

  
• Numerical study on the optimum cavity voltage of RF gun and bunch compression experiment in KU-FEL

  H. Zen; T. Kii; K. Masuda; H. Ohgaki; S. Sasaki; T. Shiiyama

  29th International Free Electron Laser Conference, FEL 2007, 2007, Peer-reviewed

  
• Present status of FEL development in Kyoto university

  S. Sasaki; H. Zen; T. Shiiyama; T. Kii; K. Masuda; H. Ohgaki

  29th International Free Electron Laser Conference, FEL 2007, 2007, Peer-reviewed

  
• A triode-type thermionic RF gun for drastic reduction of back-streaming electrons

  T. Shiiyama; K. Masuda; H. Zen; S. Sasaki; T. Kii; H. Ohgaki; K. Kanno; E. Tanabe

  29th International Free Electron Laser Conference, FEL 2007, 2007, Peer-reviewed

  
• Beam properties from s-band energy compensated thermionic RF gun and linac for KU-FEL

  T. Kii; H. Ohgaki; K. Masuda; S. Sasaki; T. Shiiyama; H. Zen

  29th International Free Electron Laser Conference, FEL 2007, 2007, Peer-reviewed

  
• Numerical evaluation of oscillator fel with multi-bunch photo-cathode RF-gun in Kyoto university

  H. Ohgaki; T. Kii; K. Masuda; S. Sasaki; T. Shiiyama; H. Zen; R. Kuroda; M. Kuriki; N. Terunuma; J. Urakawa; Y. Kamiya; M. Washio

  29th International Free Electron Laser Conference, FEL 2007, 2007, Peer-reviewed

  
• Beam charge feedback system for thermionic cathode RF-gun

  H. Ohgaki; T. Kii; K. Masuda; T. Yamazaki; K. Yoshikawa; H. Zen

  2007 IEEE PARTICLE ACCELERATOR CONFERENCE, VOLS 1-11, 2007, Peer-reviewed

  
• Intensity distribution of D-He-3 fusion reaction rate in an IEC device

  T. Fujimoto; T. Oishi; H. Zen; K. Masuda; K. Yoshikawa

  22ND IEEE/NPSS SYMPOSIUM ON FUSION ENGINEERING, 2007, Peer-reviewed

  
• Transverse phase space measurement using tomographic method

  Heishun Zen; Hideaki Ohgaki; Kai Masuda; Toshiteru Kii; Kohichi Kusukame; Toshio Fukui; Yoko Nakai; Tetsuo Yamazaki; Kiyoshi Yoshikawa

  SYNCHROTRON RADIATION INSTRUMENTATION, PTS 1 AND 2, 2007, Peer-reviewed

  
• Reducing energy degradation due to back-bombardment effect with modulated RF input in S-band thermionic RF gun

  Toshiteru Kii; Yoko Nakai; Toshio Fukui; Heishun Zen; Kohichi Kusukame; Norihito Okawachi; Masatsugu Nakano; Kai Masuda; Hideaki Ohgaki; Kiyoshi Yoshikawa; Tetsuo Yamazaki

  SYNCHROTRON RADIATION INSTRUMENTATION, PTS 1 AND 2, 2007, Peer-reviewed

  
• Design study of the triode type RF gun with the thermionic cathode

  Shiiyama Takumi; Masuda Kai; Zen Heishun; Sasaki Satoshi; Kii Toshiteru; Ohgaki Hideaki

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2007

  
• Electron beam diagnostics for the first lasing of KU-FEL

  Zen Heishun; Ohgaki Hideaki; Shiiyama Takumi; Sasaki Satoshi; Kii Toshiteru; Masuda Kai

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2007

  
• Development of IR-FEL Facility for Sustainable Science in Kyoto University

  H. Ohgaki; M. Nakano; N. Ohkawachi; H. Zen; T. Kii; K. Masuda; K. Yoshikawa; T. Yamazaki

  2nd JGSEE and Kyoto Joint International Conference on Sustainable Energy and Environment (SEE)，Bangkok, Thailand，2006.11.21-23, 21 Nov. 2006, Peer-reviewed

  
• Magnetic Field Measurement of Undulator in KU-FEL

  M. Nakano; N. Okawachi; H. Zen; T. Kii; K. Masuda; H. Ohgaki; K. Yoshikawa; T. Yamazaki

  28th International Free Electron Laser Conference，Telekom Hauptstadtrepräsentanz，660-664，2006, 2006, Peer-reviewed

  
• Design study of RF triode structure for the KU-FEL thermionic RF gun

  K. Masuda; K. Kusukame; T. Shiiyama; H. Zen; T. Kii; H. Ohgaki; K. Yoshikawa; T. Yamazaki

  28th International Free Electron Laser Conference, FEL 2006, 2006, Peer-reviewed

  
• Experimental study on effect of energy distribution on transverse phase space tomography

  H. Zen; H. Ohgaki; K. Masuda; T. Kii; T. Shiiyama; S. Sasaki; N. Okawachi; M. Nakano; K. Yoshikawa; T. Yamazaki

  28th International Free Electron Laser Conference, FEL 2006, 2006, Peer-reviewed

  
• Design study on high- TC superconducting micro-undulator

  T. Kii; H. Zen; N. Okawachi; M. Nakano; K. Masuda; H. Ohgaki; K. Yoshikawa; T. Yamazaki

  28th International Free Electron Laser Conference, FEL 2006, 2006, Peer-reviewed

  
• Production of electron beam with constant energy by controlling input power into a thermionic RF gun

  N. Okawachi; M. Nakano; H. Zen; T. Kii; K. Masuda; H. Ohgaki; K. Yoshikawa; T. Yamazaki

  28th International Free Electron Laser Conference, FEL 2006, 2006, Peer-reviewed

  
• Comparison of Tomographic Method with Single Slit Method for Transverse Phase Space Measurement with Low Energy Tailed Beam

  Zen Heishun; Ohgaki Hideaki; Masuda Kai; Kii Toshiteru; Okawachi Norihito; Nakano Masatsugu; Shiiyama Takumi; Yoshikawa Kiyoshi; Yamazaki Tetsuo

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2006

  
• Design study of the thermionic RF gun with triode structure

  Masuda Kai; Kusukame Kouichi; Shiiyama Takumi; Zen Heishun; Kii Toshiteru; Ohgaki Hideaki; Yoshikawa Kiyoshi; Yamazaki Tetsuo

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2006

  
• Spatial Distribution of D-3He Fusion Reactions in an IEC Fusion Device

  Oishi Takuya; Ogawa Satoshi; Zen Heishun; Takamatsu Teruhisa; Masuda Kai; Yoshikawa Kiyoshi

  Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2006

  
• Numerical study on the undulator in KU-FEL

  T. Fukui; Y. Nakai; H. Zen; K. Kusukame; T. Kii; K. Masuda; H. Ohgaki; K. Yoshikawa; T. Yamazaki

  Proceedings of the 27th International Free Electron Laser Conference, FEL 2005, 01 Dec. 2005

  
• Quantitative evaluation of transverse phase space tomography

  H. Zen; T. Fukui; T. Kii; K. Kusukame; K. Masuda; Y. Nakai; H. Ohgaki; T. Yamazaki; K. Yoshikawa

  Proceedings of the 27th International Free Electron Laser Conference, FEL 2005, 01 Dec. 2005

  
• Electron beam energy compensation by controlling RF pulse shape

  T. Kii; Y. Nakai; T. Fukui; H. Zen; K. Kusukame; K. Masuda; H. Ohgaki; K. Yoshikawa; T. Yamazaki

  Proceedings of the 27th International Free Electron Laser Conference, FEL 2005, 2005, Peer-reviewed

  
• Particle simulations of a thermionic RF gun with gridded triode structure for reduction of back-bombardment

  K. Masuda; K. Kusukame; T. Kii; H. Ohgaki; H. Zen; T. Fukui; Y. Nakai; K. Yoshikawa; T. Yamazaki

  Proceedings of the 27th International Free Electron Laser Conference, FEL 2005, 2005, Peer-reviewed

  

Presentations

• Current Status and Perspectives of KU-FEL, User Facility of Mid-Infrared Free Electron Laser and THz Coherent Undulator Radiation

  Heishun Zen

  The 3rd International Conference on Radiation and Emission in Materials, 18 Dec. 2020, Invited

  
• Present Status and Perspectives of Long Wavelength Free Electron Lasers at Kyoto University

  H. Zen; S. Suphakul; T. Kii; K. Masuda; H. Ohgaki

  Synchrotron and Free Electron Laser Radiation: generation and application (SFR-2016), 07 Aug. 2016, Invited

  
• Utilization of Infrared Free-Electron Laser at Kyoto University

  H. Zen

  Seminar on "Particle Accelerators and Applications in Thailand", 24 Nov. 2023, Invited

  
• Few cycle pulse generation from a high effciency free-electron laser oscillator operated in superradiance regime

  H. Zen; R. Hajima; H. Ohgaki

  11th International Workshop on Infrared Microscopy and Spectroscopy with Accelerator Based Sources, 07 Oct. 2022, Invited

  
• High extraction efficiency operation of oscillator-type Free Electron Laser driven by a normal conducting linac

  H. Zen; H. Ohgaki; R. Hajima

  31st International Linear Accelerator Conference LINAC2022, 01 Sep. 2022, Invited

  
• Observation of Burnham-Chiao ringing with pi-phase jumps in a high-efficiency superradiance FEL oscillator

  H. Zen; H. Ohgaki; R. Hajima

  The 40th International Free Electron Laser Conference (FEL2022), 23 Aug. 2022, Invited

  
• 電子ビームからの超放射

  全炳俊

  日本物理学会第77回年次大会, 19 Mar. 2022, Invited

  
• 常伝導加速器を用いた共振器型赤外自由電子レーザの引き出し効率向上に関する研究

  全炳俊

  第18回日本加速器学会年会, 11 Aug. 2021, Invited

  
• 中赤外自由電子レーザの高性能化とその利用推進

  全炳俊

  日本赤外線学会第89回定例研究会, 28 May 2021, Invited

  

Industrial Property Rights

• 特願2019- 91020, 電子線照射装置

  大垣英明; 紀井俊輝; 全炳俊; 田中龍太; 坂井一郎; 清水拓人

  
• 特許2015-094624, 特願2013-233199, 放射線検出システム、データ処理装置、放射線検出方法および波高値分布データ処理プログラム

  Heishun Zen; Hideaki Ohgaki

  

Awards

• 05 Mar. 2025

  西川賞(高エネルギー加速器科学研究奨励会)
• 10 Jun. 2021

  Particle Accelerator Society of Japan, The 17th PASJ Award for Research Encouragement
• Sep. 2008

  Subcommittee on Particle Accelerator and Beams Science, Atomic Energy Society of Japan (AESJ), Presentation Awards of Subcommittee on Particle Accelerator and Beams Science, Atomic Energy Society of Japan (AESJ)
• Aug. 2015

  Particle Accelerator Society of Japan (PASJ), Presentation Awards of The 12th Annual Meeting of Particle Accelerator Society of Japan (PASJ)
• 23 Oct. 2015

  The Japan Society of Infrared Science and Technology, 5th Best Presentation Award of the Japan Society of Infrared Science and Technology (JSIR)
• 31 May 2019

  The Japan Society of Infrared Science and Technology, The 5th Best Paper Award of Journal of the Japan Society of Infrared Science and Technology
• 13 Mar. 2021

  The Physical Society of Japan, Young Scientist Award of the Physical Society of Japan
• 04 Jun. 2021

  The Japanese Society of Infrared Science and Technology, Young Researcher Award of the Japanese Society of Infrared Science and Technology

External funds: Kakenhi

• Delbruck scattering using linearly polarized gamma-rays

  Grant-in-Aid for Scientific Research (A)

  Medium-sized Section 15:Particle-, nuclear-, astro-physics, and related fields

  National Institutes for Quantum and Radiological Science and Technology

  Takehito HAYAKAWA

  From 01 Apr. 2018, To 31 Mar. 2021, Project Closed

  デルブリュック散乱;光子光子相互作用;レーザーコンプトン散乱γ線

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18H03715/
• Study on New THz Free Electron Laser Generation Scheme Using Ultra-short Electron Beam

  Grant-in-Aid for Young Scientists (A)

  Kyoto University

  Heishun Zen

  From 01 Apr. 2014, To 31 Mar. 2018, Project Closed

  テラヘルツ放射;加速器光源;コヒーレント放射;THz放射;光陰極高周波電子銃;バンチ圧縮;小型量子ビーム発生技術;テラヘルツ自由電子レーザ;コヒーレントアンジュレータ放射;超短バンチ電子ビーム発生;テラヘルツ;長短バンチ電子ビーム発生;コヒーレント遷移放射;バンチ圧縮器設計;アンジュレータ磁場測定

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-26706026/
• Study on 3D-CT Isotope Imaging by NRF

  Grant-in-Aid for Scientific Research (B)

  Kyoto University

  Hideaki Ohgaki

  From 01 Apr. 2014, To 31 Mar. 2017, Project Closed

  LCS γ線;NRF;同位体イメージング;CT再構成;UVSOR-III;LCSγ線;同位体CT;SR-FEL;UVSORIII;原子吸収;共鳴吸収;核セキュリティ;核共鳴蛍光散乱;レーザー逆コンプトン散乱γ線;同位体;CT;FEL;ファイバーレーザー;208Pb;同位体３Dイメージング

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-26289363/
• Study on Generation of Intense and Short Pulse Synchrotron Radiation by Pulse Compression Technique

  Grant-in-Aid for Young Scientists (B)

  Kyoto University

  Heishun ZEN

  From 01 Apr. 2011, To 31 Mar. 2013, Project Closed

  放射光;パルス圧縮;短パルス光;クロスコリレーション;差周波発生;紫外光パルス長計測;コヒーレント高調波発生;短パルス放射光;コヒーレント放射光;短パルス

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23760067/
• Development of ultra-narrow band VUV coherent SR Source

  Grant-in-Aid for Scientific Research (B)

  Institute for Molecular Science

  Masahiro KATOH

  From 01 Apr. 2011, To 31 Mar. 2014, Project Closed

  シンクロトロン光;加速器;レーザー;電子ビーム;コヒーレント;真空紫外線;放射光;自由電子レーザー;量子ビーム

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23360043/
• Generation of Coherent Radiation by Laser Micro-fabrication of Electron Beam

  Grant-in-Aid for Scientific Research (B)

  Institute for Molecular Science

  Masahiro KATOH

  From 01 Apr. 2008, To 31 Mar. 2011, Project Closed

  応用物理学一般;加速器;電子ビーム;シンクロトロン光;レーザー;コヒーレント;放射光;テラヘルツ;極端紫外光

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20360041/
• Study on drastic increase of extraction efficiency of oscillator type free electron laser

  Grant-in-Aid for Scientific Research (B)

  Basic Section 80040:Quantum beam science-related

  Kyoto University

  全 炳俊

  From 01 Apr. 2022, To 31 Mar. 2025, Granted

  自由電子レーザ;中赤外;高効率化;量子ビーム

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22H03871/
• Study of ultrafast intense laser science with long-wavelength infrared free-electron laser pulses

  Grant-in-Aid for Scientific Research (B)

  Basic Section 80040:Quantum beam science-related

  National Institutes for Quantum Science and Technology

  羽島 良一

  From 01 Apr. 2022, To 31 Mar. 2026, Granted

  強光子場;長波長赤外;自由電子レーザー;トンネル電離;高次高調波発生;超短パルス;カスケード電離;レーザー誘起放電

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22H03881/
• Elucidation of free-electron laser interaction by measuring coherent edge radiation

  Grant-in-Aid for Scientific Research (B)

  Basic Section 80040:Quantum beam science-related

  National Institute of Advanced Industrial Science and Technology

  清 紀弘

  From 01 Apr. 2023, To 31 Mar. 2026, Granted

  コヒーレントエッジ放射;自由電子レーザー;テラヘルツ;電子バンチ

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23H03671/
• Research on an inverse process of free electron laser for extreme high gradient particle acceleration

  Grant-in-Aid for Scientific Research (B)

  Basic Section 15020:Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics

  The University of Tokyo

  坂上 和之

  From 01 Apr. 2023, To 31 Mar. 2026, Granted

  光による電子加速;テラヘルツ;自由電子レーザー

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23H01198/
• Study on drastic increase of extraction efficiency of oscillator type free electron laser

  Grant-in-Aid for Scientific Research (B)

  Basic Section 80040:Quantum beam science-related

  Kyoto University

  全 炳俊

  From 01 Apr. 2022, To 31 Mar. 2025, Granted

  自由電子レーザ;中赤外;高効率化;量子ビーム

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23K25125/
• Free electron laser interaction revealed from coherent edge radiation

  Grant-in-Aid for Scientific Research (B)

  Basic Section 80040:Quantum beam science-related

  National Institute of Advanced Industrial Science and Technology

  清 紀弘

  From 01 Apr. 2023, To 31 Mar. 2026, Granted

  自由電子レーザー;コヒーレントエッジ放射;電子バンチ形状;テラヘルツ;電子バンチ

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23K28360/
• Research on an inverse process of free electron laser for extreme high gradient particle acceleration

  Grant-in-Aid for Scientific Research (B)

  Basic Section 15020:Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics

  The University of Tokyo

  坂上 和之

  From 01 Apr. 2023, To 31 Mar. 2026, Granted

  光による電子加速;テラヘルツ;自由電子レーザー

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23K25894/
• Study of ultrafast intense laser science with long-wavelength infrared free-electron laser pulses

  Grant-in-Aid for Scientific Research (B)

  Basic Section 80040:Quantum beam science-related

  National Institutes for Quantum Science and Technology

  羽島 良一

  From 01 Apr. 2022, To 31 Mar. 2026, Granted

  強光子場;長波長赤外;自由電子レーザー;トンネル電離;高次高調波発生;超短パルス;カスケード電離;レーザー誘起放電

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23K25135/

Education

Teaching subject(s)

• From 01 Apr. 2025, To 31 Mar. 2026

  Quantum Radiation Energy, Advanced

  3007, Fall, Graduate School of Advanced Integrated Studies in Human Survivability, 2
• From 01 Apr. 2024, To 31 Mar. 2025

  Electromagnetic Energy

  3462, Spring, Graduate School of Energy Science, 2
• From 01 Apr. 2024, To 31 Mar. 2025

  Introduction to Energy Science and Technology

  3410, Spring, Graduate School of Energy Science, 2
• From 01 Apr. 2024, To 31 Mar. 2025

  Quantum Radiation Energy, Advanced

  3007, Fall, Graduate School of Advanced Integrated Studies in Human Survivability, 2

Administration

Faculty management (title, position)

• From 01 Apr. 2024

  エネルギー理工学研究所自己点検・評価委員会ＷＧ委員
• From 01 Apr. 2024

  エネルギー理工学研究所情報セキュリティ委員会委員
• From 01 Apr. 2024

  エネルギー理工学研究所附属エネルギー複合機構研究センター研究計画委員会・予算委員会委員
• From 01 Apr. 2024

  エネルギー理工学研究所面積利用検討委員会委員
• From 01 Apr. 2022

  エネルギー理工学研究所先端研究支援設備運営委員会委員
• From 01 Apr. 2013

  エネルギー理工学研究所安全衛生委員会委員
• From 01 Apr. 2013, To 31 Mar. 2018

  エネルギー理工学研究所産業利用課題選定委員会委員
• From 01 Apr. 2013

  エネルギー理工学研究所将来構想検討委員会委員
• From 01 Apr. 2013, To 31 Mar. 2014

  エネルギー理工学研究所附属エネルギー複合機構研究センター研究計画委員会委員
• From 01 Apr. 2015, To 31 Mar. 2018

  エネルギー理工学研究所附属エネルギー複合機構研究センター研究計画委員会委員
• From 01 Apr. 2017, To 31 Mar. 2022

  エネルギー理工学研究所エネルギー産業利用推進室
• From 01 Apr. 2017, To 31 Mar. 2021

  エネルギー理工学研究所中期目標・中期計画ＷＧ委員
• From 01 Apr. 2020

  エネルギー理工学研究所放射線障害防止委員会委員

Academic, Social Contribution

Committee Memberships

• From Oct. 2016, To May 2019

  年会・大会プログラム編成担当, 日本原子力学会ビーム科学部会
• From Sep. 2022, To Present

  International Executive Committee, International Free-Electron Laser Conference
• From Apr. 2022, To Mar. 2024

  評議員, 日本加速器学会
• From Oct. 2021, To Sep. 2023

  編集委員, 日本放射光学会
• From Oct. 2020, To Oct. 2022

  Local Organizing Committee & Scientific Program Committee, 11th International Workshop on Infrared Microscopy and Spectroscopy with Accelerator Based Sources
• From Aug. 2019, To Jun. 2021

  Program Advisory Committee, 3rd International Conference on Nuclear Photonics (NP2020)
• From Jun. 2020, To Jan. 2021

  プログラム委員, 第34回日本放射光学会・放射光科学合同シンポジウム
• From Apr. 2018, To Mar. 2019

  領域運営委員, 日本物理学会 ビーム物理領域
• From Oct. 2017, To Mar. 2018

  WG-C Convener, The 60th ICFA Advanced Beam Dynamics Workshop (FLS2018)
• From Feb. 2016, To Feb. 2016

  Local Organizing Committee, 7th Asian Forum for Accelerators and Detector
• From Apr. 2013, To Sep. 2013

  Scientific Program Committee, The 35th International Free-Electron Laser Conference (FEL2013)
• From Aug. 2011, To Aug. 2012

  Local Organizing Committee, The 34th International Free-Electron Laser Conference (FEL2012)

Social Contribution

• 三重県立上野高等学校見学会

  Lecturer

  京都大学エネルギー理工学研究所, From 17 Nov. 2023

  
• ラジャマンガラ工科大学（タイ）見学会

  Other

  京都大学エネルギー理工学研究所, From 31 Mar. 2023, To 31 Mar. 2023

  
• 京都大学宇治地区三研究所技術部見学会

  Other

  京都大学エネルギー理工学研究所, From 14 Jul. 2022, To 14 Jul. 2022