広視野MeVガンマ線カメラを用いた長期気球実験による銀河面探査

• Project/Area Number: 08J00940
• Research Category: Grant-in-Aid for JSPS Fellows
• Allocation Type: Single-year Grants
• Section: 国内
• Research Field: Condensed matter physics 1
• Research Institution: Kyoto University
• Principal Investigator: 黒澤 俊介 京都大学, 理学研究科, 特別研究員(DC1)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥1,800,000 (Direct Cost: ¥1,800,000); Fiscal Year 2010: ¥600,000 (Direct Cost: ¥600,000); Fiscal Year 2009: ¥600,000 (Direct Cost: ¥600,000); Fiscal Year 2008: ¥600,000 (Direct Cost: ¥600,000)
• Keywords: MeVガンマ線イメージング / ガス検出器 / シンチレータ / MeVガンマ線天文学 / コンプトンカメラ / 気球観測 / μ-PIC / GEM / 陽子線治療 / LaBr3(Ce) / ガンマ線天文学 / 光電子増倍管 / GSO(Ce)

Research Abstract

宇宙において放射されるガンマ線の多くはシンクロトロン放射など連続ガンマ線であるが、今までに撮像観測されてきた例はX線やTeVガンマ線など他の波長域に比べて少ない。ラインガンマ線の場合にはそのエネルギーのみを解析で使用するのでガンマ線バックグラウンドなどの除去が比較的容易であるが、連続ガンマ線の場合は難しく、イメージングが難しい。ここで、電子飛跡型コンプトンカメラは検出器内でコンプトン散乱を起こさせ、そこで生じる反跳電子および散乱ガンマ線の(3次元)方向とエネルギーを測定できるので、既存のカメラよりもバックグラウンドを抑えることができる。そこで電子飛跡型コンプトンカメラを開発し、連続ガンマ線のイメージング実証実験を行った。本実験は大阪大学核物理センターにおいて140MeVの陽子線ビームを使用して、水をターゲットにして、生じるガンマ線の撮像を行った。エネルギー帯を463-559keVおよび800-2000keVに分けて再構成したイメージでは、前者のほうが広がったイメージになった。これは511keV(電子陽電子対消滅線)の発生分布がブラッグピークと対応していないために生じるもので、一方後者は即発ガンマ線などが由来となっているガンマ線でブラッグピーク位置をトレースし、このイメージ分布はシミュレーションとも矛盾がなかった。この結果から、今までラインガンマ線のみしか行われてこなかったわれわれのカメラのイメージングについて、連続ガンマ線に対するイメージング能力も実証された。これによって、銀河面をはじめ多くの連続ガンマ線放射天体の位置同定といった撮像を行えることが期待できる。なお本実験において、コンプトンカメラのエネルギー測定範囲を今までの1.3MeVから2MeVまで上げることに成功した。

Research Products

• [Journal Article] Development of the Tracking Compton/Pair-Creation Camerabased on a Gaseous TPC and a Scintillation Camera (2011)
  • Author(s): K.Ueno, et al.
  • Journal Title: Nuclear Instruments and Methods in Physics Research Section A Volume: 628 Pages: 158-161
  • Peer Reviewed
• [Journal Article] Development of an Electron-Tracking Compton Camerausing CF_<4> gas at high pressure for improved detection efficiency (2011)
  • Author(s): M.Takahashi, et al.
  • Journal Title: Nuclear Instruments and Methods in Physics Research Section A Volume: 628 Pages: 150-153
  • Peer Reviewed
• [Journal Article] Development of an 8×8 array of LaBr_<3> (Ce) scintillator pixels for a gaseous Compton gamma-ray camera (2010)
  • Author(s): S.Kurosawa, et al.
  • Journal Title: Nuclear Instruments and Methods in Physics Research Section A Volume: 623 Pages: 249-251
  • Peer Reviewed
• [Journal Article] Balloon-borne sub-MeV/MeV gamma-ray observation using a Compton camera with a gaseous TPC and scintillation camera (2010)
  • Author(s): S.Kurosawa, et al.
  • Journal Title: SPIE Volume: 7732 Pages: 10-10
• [Journal Article] Electron-Tracking Compton Gamma-Ray Camera for Small Animal and Phantom Imaging (2010)
  • Author(s): S.Kabuki, et al.
  • Journal Title: Nuclear Instruments and Methods in Physics Research Section A Volume: 623 Pages: 606-607
  • Peer Reviewed
• [Journal Article] Development of an 8×8 array of LaBr3(Ce)scintillator pixels for a gaseous Compton gamma-ray camera (2010)
  • Author(s): S.Kurosawa, H.Kubo, K.Hattori, C.Ida, S.Iwaki, S.Kabuki, K.
  • Journal Title: Nucl.Instr.and Meth.A (掲載決定)
  • Peer Reviewed
• [Journal Article] A new imaging device based on UV scintillators and alarge area gas photomulitiplier (2010)
  • Author(s): S.Kurosawa, H.Kubo, T.Tanimori, K.Taniue, H.Sekiya, K.Fukuda, S.Ishizu, N.Kawaguchi, T.Suyama, A.Yoshikawa, T.Yanagida, Y.Yokota
  • Journal Title: Nucl.Instr.and Meth.A (掲載決定)
  • Peer Reviewed
• [Journal Article] First underground results with NEWAGE-0.3a direction-sensitive dark matter detector (2010)
  • Author(s): K.Miuchi, H.Nishimura, K.Hattori, N.Higashi, C.Ida, S.Iwaki, S.Kabuki, H.Kubo, S.Kurosawa, K.Nakamura, J.Parker, T.Sawano, M.Takahashi, T.Tanimori, K.Taniue, K.Ueno, H.Sekiya, A.Takeda, K.Tsuchiya, A.Takada
  • Journal Title: Physics Letters B 686 Pages: 11-17
  • Peer Reviewed
• [Journal Article] Electron-Tracking Compton Gamma-Ray Camera for Small Animal and Phantom Imaging (2010)
  • Author(s): S.Kabuki, H.Kimura, H.Amano, Y.Nakamoto, H.Kubo, K.Miuchi, S.Kurosawa, M.Takahashi, H.Kawashima, M.Ueda, T.Okada, A.Kubo, E.Kunieda, T.Nakahara, R.Kohara, O.Miyazaki, T.Nakazawa, T.Shirahata, E.Yamamoto, K.Ogawa, K.Togashi, H.Saji, T.Tanimori
  • Journal Title: Nucl.Instr.and Meth.A (掲載決定)
  • Peer Reviewed
• [Journal Article] Performance of 8×8 Pixel LaBr3 : Ce and Gd2SiO5 : Ce Scintillator Arrays Coupled to a 64-channel Multi-anode PMT (2009)
  • Author(s): S.Kurosawa, H.Kubo, K.Hattori, C.Ida, S.Iwaki, S.Kabuki, K.Miuchi, H.Nishimura, Y.Okada, J.D.Parker, A.Takada, M.Takahashi, T.Tanimori, K.Ueno, Y.Yanagida
  • Journal Title: IEEE Transactions on Nuclear Science 56 Pages: 3779-3788
  • Peer Reviewed
• [Journal Article] A Novel Position-Sensitive Radiation Detector Using a Gaseous Photomultiplier and a UV Scintillator (2009)
  • Author(s): S.Kurosawa, H.Kubo, T.Tanimori, K.Taniue, H.Sekiya, K.Fukuda, S.Ishizu, N.Kawaguchi, T.Suyama, A.Yoshikawa, T.Yanagida, Y.Yokota
  • Journal Title: Proceedings of science (PD09)011
• [Journal Article] Development of a large area VUV sensitive gas PMT with GEM/μPIC (2009)
  • Author(s): H.Sekiya, C.Ida, H.Kubo, S.Kurosawa, T.Tanimori, A.Yoshikawa, T.Yanagida, Y.Yokotoa, K.Fukuda, S.Ishiau, N.Kawaguchi, T.Suyama
  • Journal Title: JINST 4
  • Peer Reviewed
• [Journal Article] Functionally important structural elements of the cyanobacterial clock-related protein Pex (2009)
  • Author(s): Shunsuke Kurosawa, et al.
  • Journal Title: Genes to Cells 14 Pages: 1-16
  • Peer Reviewed
• [Journal Article] Performance of the gamma-ray camera based on GSO (Ce) scintillator array and PSPMT with the ASIC readout system (2008)
  • Author(s): K. Ueno, et al.
  • Journal Title: Nuclear Instruments and Methods in Physics Research Section A 591 Pages: 268-271
  • Peer Reviewed
• [Journal Article] Compton imaging Camera using an Electron-Tracking gaseous TPC and a scintillation camera (2008)
  • Author(s): K. Ueno, et al.
  • Journal Title: 2008 IEEE Nuclear Science Symposium Conference Record Pages: 3470-3474
• [Journal Article] Development of Electron tracking Compton Camera based on micro pixel gas detector and its application for medical imaging (2008)
  • Author(s): T. Tanimori, et al.
  • Journal Title: 2008 IEEE Nuclear Science Symposium Conference Record Pages: 616-620
• [Journal Article] Low-power wide-dynamic-range readout system for a 64-channel multi-anode PMT of a scintillation gamma camera (2008)
  • Author(s): H. Kubo, et al.
  • Journal Title: 2008 IEEE Nuclear Science Symposium Conference Record Pages: 1181-1185
• [Journal Article] Simultaneous imaging of multi nuclides using the Electron Tracking Compton gamma-ray camera based on small animal and phantom experiments (2008)
  • Author(s): S. Kabuki, et al.
  • Journal Title: 2008 IEEE Nuclear Science Symposium Conference Record Pages: 3937-3941
• [Presentation] ガンマ線コンプトンイメージングカメラの陽子線治療への応用3 (2011)
  • Author(s): 黒澤俊介
  • Organizer: 日本物理学会第66回年次大会
  • Place of Presentation: 新潟大学
  • Year and Date: 2011-03-26
• [Presentation] Development of an 8×8 array of LaBr_<3>(Ce) pixels for a gaseous Compton gamma-ray camera (2011)
  • Author(s): 黒澤俊介
  • Organizer: The SHOGUN gamma-ray spectrometer (international workshop)
  • Place of Presentation: 理化学研究所(招待講演)
  • Year and Date: 2011-03-05
• [Presentation] Balloon-borne sub-MeV/MeV gamma-ray observation using a Comptoncamera with a gaseous TPC and a scintillation camera (2010)
  • Author(s): 黒澤俊介
  • Organizer: SPIE
  • Place of Presentation: San Diego, California, USA
  • Year and Date: 2010-07-02
• [Presentation] ガンマ線コンプトンイメージングカメラの陽子線治療への応用2 (2010)
  • Author(s): 黒澤俊介
  • Organizer: 日本物理学会
  • Place of Presentation: 岡山大学
  • Year and Date: 2010-03-20
• [Presentation] Development of a Novel Position-Sensitive Radiation Detector Using a Gaseous Photomultiplier and a Vacuum Ultraviolet Scintillator (2010)
  • Author(s): 黒澤俊介
  • Organizer: 12th Vienna Conference on Instrumentation(VCI 2010)
  • Place of Presentation: Wien, Austria
• [Presentation] Compton gamma-ray camera using a gaseous TPC and GSO(Ce)-LaBr3(Ce)scintillator pixel arrays for astronomy and medical imaging (2009)
  • Author(s): 黒澤俊介
  • Organizer: The Inaugural Sydney International Workshop on Synergies in Astronomy and Medicine(AstroMed09)
  • Place of Presentation: Sydney, Australia
  • Year and Date: 2009-12-15
• [Presentation] SMILE6:高圧ガス検出器を用いたコンプトンカメラの開発 (2009)
  • Author(s): 黒澤俊介
  • Organizer: 日本物理学会
  • Place of Presentation: 甲南大学
  • Year and Date: 2009-09-10
• [Presentation] A Novel Position-Sensitive Radiation Detector Using a Gaseous Photomultiplier and an UV Scintillator (2009)
  • Author(s): 黒澤俊介
  • Organizer: International Workshop on new photon-detectors(PD09)
  • Place of Presentation: Shinshu University
  • Year and Date: 2009-06-25
• [Presentation] Development of a Compton gamma-ray camera with LaBr3(Ce)pixellated arrays for medical imaging (2009)
  • Author(s): 黒澤俊介
  • Organizer: 10th International Conference on Inorganic Scintillators and their Applications(SCINT09)
  • Place of Presentation: Jeju, Korea
  • Year and Date: 2009-06-08
• [Presentation] ガンマ線コンプトンイメージングカメラの陽子線治療への応用 (2009)
  • Author(s): 黒澤俊介, ら
  • Organizer: 日本物理学会 第64回年次大会
  • Place of Presentation: 立教学院池袋キャンパス
  • Year and Date: 2009-03-28
• [Presentation] Development of an 8 x 8 array of LaBr3 (Ce) scintillator pixels for a gaseous Compton gamma-ray camera (2009)
  • Author(s): Shunsuke Kurosawa, et al.
  • Organizer: The 1st international conference on Technology and Instrumentation in Particle Physics (TIPP09)
  • Place of Presentation: Epochal Tsukuba, Tsukuba, Japan
  • Year and Date: 2009-03-14
• [Presentation] 気球搭載コンプトンカメラによるMeV領域ガンマ線観測実験SMILE (2009)
  • Author(s): 黒澤俊介, ら
  • Organizer: 第九回 宇宙科学シンポジウム
  • Place of Presentation: 宇宙航空研究開発機構宇宙科学研究本部
• [Presentation] Development of an 8×8 array of LaBr3 (Ce) pixels with a multi-anode PMT for a gaseous Compton gamma-ray camera (2008)
  • Author(s): Shunsuke Kurosawa, et al.
  • Organizer: New Developments In Photodetection 2008 (NDIP2008)
  • Place of Presentation: Aix-les-Bains, France
  • Year and Date: 2008-06-16
• [Remarks]
  • URL: http://www-cr.scphys.kyoto-u.ac.jp/member/kurosawa/
• [Remarks]
  • URL: http://www-cr.scphys.kyoto-u.ac.jp/member/kurosawa/
• [Remarks]
  • URL: http://www-cr.scphys.kyoto-u.ac.jp/member/kurosawa/