Basic Information

Affiliated programs (koza)

• Graduate School of Science, 物理学・宇宙物理学専攻 電磁物理学講座, 助教

Academic Degree

• 修士（理学）(立教大学)
• 博士（医学）(北海道大学)

Academic Resume (Graduate Schools)

• 立教大学, 大学院博士前期課程理学研究科物理学専攻, 修了
• 北海道大学, 大学院博士課程医学研究科医学専攻, 修了

Academic Resume (Undergraduate School/Majors)

• 立教大学, 理学部物理学科, 卒業

Research History

• From Jan. 2020, To Dec. 2022

  RIKEN, RIKEN Nishina Center for Accelerator-Based Science, 協力研究員
• From Jan. 2020, To Present

  Kyoto University, Institute for Chemical Research, 助教
• From Apr. 2018, To Dec. 2019

  Chiba University, Faculty of Engineering, 非常勤講師
• From Apr. 2017, To Dec. 2019

  量子科学技術研究開発機構, 放射線医学総合研究所, 博士研究員
• From Apr. 2016, To Mar. 2017

  日本学術振興会, 特別研究員 DC2
• From Nov. 2013, To Mar. 2016

  北海道大学大学院, 医学研究科, 短時間勤務職員(学術研究員)

ID,URL

• J-Global ID

  201801004491059803

researchmap URL

• https://researchmap.jp/ryo_ogawara

Research

Research Interests

• CR-39
• イオントラッピング
• SCRIT
• ビームリサイクル
• Pulse shape discrimination
• Accelerator-based neutron source

Research Areas

• Energy, Quantum beam science
• Natural sciences, Particle, nuclear, cosmic-ray, and astrophysics - experiment
• Life sciences, Radiology

Papers

• Improvement of Crystal Identification Accuracy for Depth-of-Interaction Detector System with Peak-to-Charge Discrimination Method.

  Kento Miyata; Ryo Ogawara; Masayori Ishikawa

  Sensors, 2023

  
• Ion-trapping properties of SCRIT: Time evolutions of 138Ba charge state distributions

  R. Ogawara; Y. Abe; T. Ohnishi; A. Enokizono; M. Hara; T. Hori; S. Ichikawa; K. Kurita; Y. Maehara; T. Suda; K. Tsukada; M. Wakasugi; M. Watanabe; H. Wauke

  Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Aug. 2023

  
• Measurement of the energy spectrum of laser-accelerated protons using FNTD: Development of an easy and quick method for energy spectrometry

  Tamon Kusumoto; Shunsuke Inoue; Ryo Ogawara; Satoshi Kodaira

  Radiation Measurements, Feb. 2022

  
• Quantitative estimation of track segment yields of water radiolysis species under heavy ions around Bragg peak energies using Geant4-DNA.

  Kentaro Baba; Tamon Kusumoto; Shogo Okada; Ryo Ogawara; Satoshi Kodaira; Quentin Raffy; Rémi Barillon; Nicolas Ludwig; Catherine Galindo; Philippe Peaupardin; Masayori Ishikawa

  Scientific reports, 15 Jan. 2021, Peer-reviewed

  
• Scaling parameter of the lethal effect of mammalian cells based on radiation-induced OH radicals: effectiveness of direct action in radiation therapy.

  Tamon Kusumoto; Ryo Ogawara; Kazuyo Igawa; Kentaro Baba; Teruaki Konishi; Yoshiya Furusawa; Satoshi Kodaira

  Journal of radiation research, 01 Jan. 2021, Peer-reviewed

  
• Neutron detection via thermoluminescence of Ce3+-doped CaO–Al2O3–B2O3 glass

  Ichiro Kawamura; Hiroki Kawamoto; Hiromi Kimura; Hajime Komiya; Yutaka Fujimoto; Masanori Koshimizu; Go Okada; Yusuke Koba; Ryo Ogawara; Mitsuru Suda; Genichiro Wakabayashi; Takayuki Yanagida; Keisuke Asai

  Materials Technology, 20 Dec. 2020

  
• The accelerator-based boron neutron capture reaction evaluation system for head and neck cancer

  Shou Wang; Kazuyo Igawa; Ryo Ogawara; Mitsuru Suda; Tsuyoshi Hamano; Soichiro Ibaragi; Tadashi Hanafusa; Yasuaki Ichikawa; Akira Sasaki

  APPLIED RADIATION AND ISOTOPES, Nov. 2020, Peer-reviewed

  
• Water radiolysis with thermal neutrons, fast neutrons and contamination gamma rays in the accelerator based thermal neutron field: Time dependence of hydroxyl radical yields

  Tamon Kusumoto; Ryo Ogawara; Nicolas Ludwig; Quentin Raffy; Satoshi Kodaira

  RADIATION PHYSICS AND CHEMISTRY, Sep. 2020, Peer-reviewed

  
• Investigation of shielding material properties for effective space radiation protection

  Masayuki Naito; Satoshi Kodaira; Ryo Ogawara; Kenji Tobita; Yoji Someya; Tamon Kusumoto; Hiroki Kusano; Hisashi Kitamura; Masamune Koike; Yukio Uchihori; Masahiro Yamanaka; Ryo Mikoshiba; Toshiaki Endo; Naoki Kiyono; Yusuke Hagiwara; Hiroaki Kodama; Shinobu Matsuo; Yasuhiro Takami; Toyoto Sato; Shin-ichi Orimo

  LIFE SCIENCES IN SPACE RESEARCH, Aug. 2020, Peer-reviewed

  
• Discrimination of hydroxyl radical yields due to thermal neutrons, fast neutrons, and gamma rays in accelerator-based neutron fields

  Ryo Ogawara; Tamon Kusumoto; Alisa Kobayashi; Teruaki Konishi; Tsuyoshi Hamano; Satoshi Kodaira

  Radiation Physics and Chemistry, Aug. 2020, Peer-reviewed, Lead author, Corresponding author

  
• Polyethylene moderator optimized for increasing thermal neutron flux in the NASBEE accelerator-based neutron field

  Ryo Ogawara; Tamon Kusumoto; Teruaki Konishi; Tsuyoshi Hamano; Satoshi Kodaira

  Radiation Measurements, May 2020, Peer-reviewed

  
• Evidence for a critical dose above which damage to carbonate ester bonds in PADC appear after gamma ray and ultra soft X-ray exposures

  Tamon Kusumoto; Shogo Okada; Hisaya Kurashige; Kazuo Kobayashi; Michel Fromm; Quentin Raffy; Nicolas Ludwig; Masato Kanasaki; Keiji Oda; Yoshihide Honda; Sachiko Tojo; Jean Emmanuel Groetz; Ryo Ogawara; Satoshi Kodaira; Rémi Barillon; Tomoya Yamauchi

  Radiation Physics and Chemistry, May 2020, Peer-reviewed

  
• Development of Optical-fiber-based Neutron Detector Using Li-glass Scintillator for an Intense Neutron Field

  Akihisa Ishikawa; Atsushi Yamazaki; Kenichi Watanabe; Sachiko Yoshihashi; Akira Uritani; Yoshinori Sakurai; Hiroki Tanaka; Ryo Ogawara; Mitsuru Suda; Tsuyoshi Hamano

  Sensors and Materials, 20 Apr. 2020, Peer-reviewed

  
• Thermoluminescence properties of Dy3+-doped CaO–Al2O3–B2O3 glasses for neutron detection

  Ichiro Kawamura, Hiroki Kawamoto, Yutaka Fujimoto, Masanori Koshimizu, Go Okada, Yusuke Koba, Ryo Ogawara, Mitsuru Suda, Takayuki Yanagida, Keisuke Asai

  Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Apr. 2020, Peer-reviewed

  
• Verification of dose estimation of Auger electrons emitted from Cu-64 using a combination of FNTD measurements and Monte Carlo simulations

  Tamon Kusumoto; Yusuke Matsuya; Kentaro Baba; Ryo Ogawara; Mark S. Akselrod; Jonathan Harrison; Vasiliy Fomenko; Takeshi Kai; Masayori Ishikawa; Sumitaka Hasegawa; Satoshi Kodaira

  Radiation Measurements, Mar. 2020, Peer-reviewed

  
• Detection of alpha and Li-7 particles from B-10(n, alpha)7Li reactions using a combination of CR-39 nuclear track detector and potassium hydroxide-ethanol-water solution in accelerator-based neutron fields

  Ryo Ogawara; Tamon Kusumoto; Teruaki Konishia; Tsuyoshi Hamano; Satoshi Kodaira

  NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, Mar. 2020, Peer-reviewed, Lead author, Corresponding author

  
• Sensitivity and linearity of optical fiber-based neutron detectors using small Li-6-based scintillators

  Akihisa Ishikawa; Atsushi Yamazaki; Kenichi Watanabe; Sachiko Yoshihashi; Akira Uritani; Kentaro Fukuda; Akifumi Koike; Ryo Ogawara; Mitsuru Suda; Tsuyoshi Hamano

  NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Feb. 2020, Peer-reviewed

  
• Thermal neutron field characteristics in the neutron exposure accelerator system for biological effect experiments (NASBEE) facility

  Ryo Ogawara; Satoshi Kodaira; Mitsuru Suda; Takuya Hagihara; Tsuyoshi Hamano

  NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Jan. 2020, Peer-reviewed

  
• Feasibility study on a novel tiny dosimeter using a barium titanate capacitor

  Yuma Kuga; Ryo Ogawara; Masayori Ishikawa

  JOURNAL OF RADIATION RESEARCH, Jan. 2020, Peer-reviewed

  
• Neutron-induced thermoluminescence properties of Tb3+-doped CaO-Al2O3-B2O3 glasses

  Ichiro Kawamura; Hiroki Kawamoto; Yutaka Fujimoto; Masanori Koshimizu; Go Okada; Yusuke Koba; Ryo Ogawara; Takayuki Yanagida; Keisuke Asai

  JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, Oct. 2019, Peer-reviewed

  
• Development of thermal neutron moderator for testing boron agents for Boron Neutron Capture Therapy (BNCT)

  Ichikawa, G.; Tsuchida, K.; Kiyanagi, Y.; Ishikawa, A.; Hirata, Y.; Yoshihashi, S.; Watanabe, K.; Uritani, A.; Hamano, T.; Ogawara, R.; Suda, M.; Igawa, K.

  JOURNAL OF INSTRUMENTATION, Jun. 2019, Peer-reviewed

  
• Radiation Chemical Yield of Hydroxyl Radicals for Accelerator-based Boron Neutron Capture Therapy: Dose Assessment of B-10(n,alpha)Li-7 Reaction Using Coumarin-3-Carboxilic Solution

  Tamon Kusumoto; Ryo Ogawara

  RADIATION RESEARCH, May 2019, Peer-reviewed

  
• Discrimination method for gamma ray dose in neutron fields using ionization chamber with attenuation filters

  Ryo Ogawara; :Mitsuru Suda; :Takuya Hagihara; :Satoshi Kodaira; Tsuyoshi hamano

  Radiation Protection Dosimetry, Feb. 2019, Peer-reviewed, Lead author, Corresponding author

  
• Feasibility study on energy-dependent neutron flux monitor using multi-core SOF detector

  Masayori Ishikawa; Kentaro Baba; Ryo Ogawara; Naoto Shimizu; Yoshinori Sakurai

  2019 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (NSS/MIC), 2019

  
• Signal pulse emulation for scintillation detectors using Geant4 Monte Carlo with light tracking simulation

  R. Ogawara; M. Ishikawa

  REVIEW OF SCIENTIFIC INSTRUMENTS, Jul. 2016, Peer-reviewed

  
• Feasibility study on signal separation for spontaneous alpha decay in LaBr3:Ce scintillator by signal peak-to-charge discrimination

  R. Ogawara; M. Ishikawa

  REVIEW OF SCIENTIFIC INSTRUMENTS, Aug. 2015, Peer-reviewed

  
• Construction of the SCRIT electron scattering facility at the RIKEN RI Beam Factory

  M. Wakasugi; T. Ohnishi; S. Wang; Y. Miyashita; T. Adachi; T. Amagai; A. Enokizono; A. Enomoto; Y. Haraguchi; M. Hara; T. Hori; S. Ichikawa; T. Kikuchi; R. Kitazawa; K. Koizumi; K. Kurita; T. Miyamoto; R. Ogawara; Y. Shimakura; H. Takehara; T. Tamae; S. Tamaki; M. Togasaki; T. Yamaguchi; K. Yanagi; T. Suda

  NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, Dec. 2013, Peer-reviewed

  
• Electron-beam-driven RI separator for SCRIT (ERIS) at RIKEN RI beam factory

  T. Ohnishi; S. Ichikawa; K. Koizumi; K. Kurita; Y. Miyashita; R. Ogawara; S. Tamaki; M. Togasaki; M. Wakasugi

  NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, Dec. 2013, Peer-reviewed

  
• Ion-trapping properties of SCRIT

  R. Ogawara; T. Ohnishi; M. Togasaki; S. Tamaki; Y. Miyashita; H. Takehara; K. Koizumi; K. Kurita; M. Wakasugi

  NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, Dec. 2013, Peer-reviewed

  
• Nuclear physics at the SCRIT electron scattering facility

  Toshimi Suda; Tatsuya Adachi; Tatsuya Amagai; Akitomo Enokizono; Masahiro Hara; Toshitada Hori; Shin'ichi Ichikawa; Kazuyoshi Kurita; Takaya Miyamoto; Ryo Ogawara; Tetsuya Ohnishi; Yuuto Shimakura; Tadaaki Tamae; Mamoru Togasaki; Masanori Wakasugi; Shuo Wang; Kayoko Yanagi

  PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS, 2012, Peer-reviewed

  

Industrial Property Rights

• WO2017-038953, JP2016075725, シンチレーション光検出装置および放射線検出装置

  石川 正純; 小川原 亮

  
• WO2016-136480, JP2016054017, LaBr3シンチレーション検出器及び特定イベント排除方法

  石川 正純; 小川原 亮

  

External funds: Kakenhi

• Elucidation of mechanism of ultra-high dose rate cancer therapy - FLASH

  Grant-in-Aid for Scientific Research (B)

  Basic Section 52040:Radiological sciences-related

  National Institutes for Quantum Science and Technology

  小平 聡

  From 01 Apr. 2021, To 31 Mar. 2025, Granted

  線量率効果;放射線化学分解;ラジカル;放射線治療;超高線量率;放射線化学;放射線分解;超高線量率放射線治療;陽子線;炭素線;フラッシュ放射線治療;線量率;作用機序

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21H02874/
• 稀少不安定原子核反応研究のための静止不安定核標的の開発

  Grant-in-Aid for Challenging Research (Pioneering)

  Medium-sized Section 15:Particle-, nuclear-, astro-physics, and related fields

  Kyoto University

  若杉 昌徳

  From 30 Jul. 2020, To 31 Mar. 2023, Granted

  イオントラップ;ビームリサイクル;内部標的;標的;不安定核標的

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20K20526/
• Development of a resonant extraction system for a high efficiency charge breeder

  Grant-in-Aid for Early-Career Scientists

  Basic Section 80040:Quantum beam science-related

  Kyoto University

  Ryo Ogawara

  From 01 Apr. 2020, To 31 Mar. 2022, Project Closed

  チャージブリーダー;EBIS;共鳴取り出し;EBIT;イオンビーム;高周波共鳴;原子核物理

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20K20112/
• 加速器中性子源を用いたBNCT組織線量分布評価体系の確立

  Grant-in-Aid for Scientific Research (C)

  Basic Section 90140:Medical technology assessment-related

  Okayama University

  井川 和代

  From 01 Apr. 2020, To 31 Mar. 2023, Granted

  三次元口腔がんモデル;ホウ素;BNCT;口腔がん;三次元培養モデル;中性子捕捉反応;中性子線量;ホウ素分布;三次元培養

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20K12714/
• Creation of new agents for BNCT that enable to measure boron concentration at tumor site

  Grant-in-Aid for Scientific Research (C)

  Basic Section 37030:Chemical biology-related

  Okayama University

  Hiroki Kakuta

  From 01 Apr. 2019, To 31 Mar. 2022, Project Closed

  ホウ素中性子捕捉療法;BNCT;非侵襲的濃度測定;X線CT;分子設計;BSH;中性子線照射;CR-39;ホウ素中性子補足療法;医薬分子設計;ホウ素濃度換算

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19K05735/
• Development of integrated dose evaluation system in accelerator-based BNCT treatment

  Grant-in-Aid for Scientific Research (B)

  Basic Section 52040:Radiological sciences-related

  Hokkaido University

  石川 正純

  From 01 Apr. 2019, To 31 Mar. 2023, Granted

  SOF検出器;PQD法;DOI-PET;BNCT;中性子計測

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19H03594/
• Development of scintillator with optical fiber detector with pulse shape discrimination

  Grant-in-Aid for Research Activity Start-up

  National Institutes for Quantum and Radiological Science and Technology

  Ryo Ogawara

  From 25 Aug. 2017, To 31 Mar. 2019, Project Closed

  シンチレータ;光ファイバ;パルス波形弁別;中性子場特性評価;熱中性子束;速中性子線量;ガンマ線線量;熱中性子検出器;有機シンチレータ

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17H07377/
• ビームリサイクル技術のためのアクティブ内部標的の開発

  Grant-in-Aid for Early-Career Scientists

  Basic Section 80040:Quantum beam science-related

  Kyoto University

  小川原 亮

  From 01 Apr. 2022, To 31 Mar. 2024, Granted

  ビームリサイクル;アクティブ標的;加速器;原子核物理

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22K18127/
• Precise measurement of charge density distribution of Sn unstable isotopes by advanced innovative SCRIT electron scattering

  Grant-in-Aid for Scientific Research (S)

  Broad Section B

  Kyoto University

  若杉 昌徳

  From 12 Apr. 2023, To 31 Mar. 2028, Granted

  不安定原子核;電子散乱;電荷密度分布;不安定核静止標的

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23H05436/
• Development of RFQ-type isobar filters leading inovative research on unstable nuclear reactions

  Grant-in-Aid for Challenging Research (Pioneering)

  Medium-sized Section 15:Particle-, nuclear-, astro-physics, and related fields

  Kyoto University

  若杉 昌徳

  From 30 Jun. 2023, To 31 Mar. 2026, Granted

  Isober separator;RFQ;リニアトラップ;ベータトロン共鳴

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23K17307/

External funds: others

• BNCTにおける吸収線量評価のための細胞内ホウ素薬剤分布の測定

  量子科学技術研究開発機構 平成３０年度ダイバーシティ推進連携研究助成金

  From 01 Jun. 2018, To 31 Mar. 2019

  小川原亮

Education

Teaching subject(s)

• From 01 Apr. 2023, To 31 Mar. 2024

  Seminar on Beam Science B

  3064, Fall, Graduate School of Science, 2
• From 01 Apr. 2023, To 31 Mar. 2024

  Seminar on Beam Science A

  3063, Spring, Graduate School of Science, 2
• From 01 Apr. 2023, To 31 Mar. 2024

  Laboratory Work in Physics A4

  8256, Spring, Faculty of Science, 5
• From 01 Apr. 2022, To 31 Mar. 2023

  Seminar on Beam Science A

  3063, Spring, Graduate School of Science, 2
• From 01 Apr. 2022, To 31 Mar. 2023

  Laboratory Work in Physics A4

  8256, Spring, Faculty of Science, 5
• From 01 Apr. 2022, To 31 Mar. 2023

  Seminar on Beam Science B

  3064, Fall, Graduate School of Science, 2
• From Apr. 2020, To Mar. 2021

  Laboratory Work in Physics A4

  Fall, 理学部
• From Apr. 2020, To Mar. 2021

  Seminar on Beam Science A

  Spring, 理学研究科
• From Apr. 2020, To Mar. 2021

  Seminar on Beam Science B

  Fall, 理学研究科
• From Apr. 2021, To Mar. 2022

  Laboratory Work in Physics A4

  Spring, 理学部
• From Apr. 2021, To Mar. 2022

  Seminar on Beam Science A

  Spring, 理学研究科
• From Apr. 2021, To Mar. 2022

  Seminar on Beam Science B

  Fall, 理学研究科

Part-time lecturer

• From 01 Apr. 2023, To 30 Sep. 2023

  課題演習A4

  期間内60時間, 京都大学, 理学部
• From 01 Apr. 2022, To 31 Mar. 2023

  課題演習A4

  期間内120時間, 理学部

Administration

Faculty management (title, position)

• From 01 Apr. 2021, To 31 Mar. 2022

  化学研究所総務・教務委員会委員