研究紹介

放射光科学研究センター

放射線評価グループ

グループディレクター 後藤 俊治 (D.Eng.)
後藤 俊治 (D.Eng.)

放射線評価グループは、運転データに基づくXFEL放射線安全評価と遮蔽性能評価およびその手法開発整備を行います。また、高機能ビームロスモニターなどの放射線モニターの開発・高度化を進めます。

研究テーマ

  • XFEL加速器に関する放射線挙動解析・物理研究
  • XFEL加速器に関する放射線遮蔽・防護研究
  • XFEL加速器放射線安全設計
  • XFEL加速器にかかわる放射線モニターの開発・研究

主要論文

  1. Yoshihiro Asano, Toshiro Itoga, and Xavier Marechal:
    "Radiation Shielding aspects of the SCSS prototype XFEL facility."
    Nuclear Technology Vol.168 387-390 (2009)
  2. Yoshihiro Asano, Teruhiko Bizen, and Xavier Marechal:
    "Analyses of the factors for demagnetization of permanent magnet caused by high energy electron irradiation."
    Journal of Synchrotron Radiation Vol. 16 p317-324 (2009)
  3. X.-M.Marechal, T.Itoga, Y.Asano:
    "Fiber Beam loss Monitor For the SPring-8 X-FEL;Test Operation at the SPring-8 250MeV Compact SASE Source."
    International Particle Accelerator Conference (IPAC'10) Kyoto (2010)
  4. H.Aoyagi, T.Itoga, N.Nariyama, T.Bizen, T.Tanaka, H.Kitamura, and Y.Asano:
    "Measurement of Electron Beam halo with Diamond Detector."
    Proc. of the 24th workshop on Radiation Detectors and Their Uses. p73-81, KEK proceedings2010-10
  5. Y.Asano:
    "Application of Heavy Concretes to the Shield Materials of Synchrotron Radiation beamlines."
    Radiation Measurements 46 p546-550 (2011)
  6. T. Itoga, Y.Asano, and Y.Tanimura:
    "Response Function of a Superheated Drop Neutron Monitor with Lead Shell in the thermal to 400MeV Energy Range."
    Radiation Protection Dosimetry ncr120 (2011)
  7. Yoshihiro Asano:
    "Characteristics of radiation safety for Synchrotron Radiation and X-ray Free Electron Laser facilities."
    Radiation Protection Dosimetry ncr131 (2011)
  8. X.M.Mareshal, Y.Asano, T.Itoga:
    "Design, development, and operation of a fiber-based Cherenkov beam loss monitor at the Spring-8 Angstrom Compact Free Electron Laser"
    Nuclear Instruments & Methods A673 (2012)
  9. H.Aoyagi, Y.Asano,T.Itoga, N.Nariyama, T.Bizen, T.Tanaka,, H.Kitamura:
    "Pulse-mode Measurement of Electron Beam halo using Diamond -based detector"
    Physical Review ST Accelerators & Beams 15 (2012)
  10. Yoshihiro Asano:
    "Radiation Ssafety"
    Free electron Laser Chapter 10, Intech Open publisher www.intechweb.org (2012)