Development of a wide field polarimeter for hard X-rays in small satellite

• Project/Area Number: 25610042
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Astronomy
• Research Institution: Kyoto University
• Principal Investigator: Tanimori Toru 京都大学, 理学(系)研究科(研究院), 教授 (10179856)
• Co-Investigator(Renkei-kenkyūsha): KUBO Hidetoshi 京都大学, 大学院理学研究科, 准教授 (40300868) ; TAKADA Atsushi 京都大学, 大学院理学研究科, 助教 (90531468)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: 硬X線偏光測定 / ガンマ線バースト / 電子飛跡検出型コンプトンカメラ / 気球実験 / コンプトン散乱 / ガスTPC / 光電効果 / イメージング / パルサー / 気球観測 / 磁場 / ジェット

Outline of Final Research Achievements

Ｗe have developed Electron Tracking Compton Camera for exploring MeV gamma astronomy, which have a capability of high quality imaging with a wide Field of View of 4str and strong background rejection. Thus, ETCC is considered to be a good detector for the detection of GRBs. Also, since Compton scattering keeps a polarization of gamma very well, ETCC would be a good polarization-measured instrument having an imaging ability. After checking the good modulation factor of ETCC for above 100 keV by simulation, we have examined the modulation factor of ETCC at Synchrotron Facility in Japan and obtained a good modulation factor of ~0.6 at 130keV which is one of best results for hard X-ray polarization detector. Furthermore, we succeeded to measure the polarization using a weak RI source by applying an imaging cut for the background suppression. This is a first result in the world of imaging polarimeter for hard X-rays and nuclear gammas.

Research Products

• [Journal Article] An Electron-Tracking Compton Telescope for a Survey of the Deep Universe by MeV gamma-rays (2015)
  • Author(s): T. Tanimori, H. Kubo, A. Takada, S. Iwaki, S. Komura, S. Kurosawa, Y. Matsuoka, K. Miuchi, S. Miyamoto, T. Mizumoto, Y. Mizumura, K. Nakamura, S. Nakamura, M. Oda, J. D. Parker, T. Sawano, S. Sonoda, T. Takemura, D. Tomono, K. Ueno
  • Journal Title: The Astrophysical Journal Volume: 810 Issue: 1 Pages: 28-28
  • DOI: 10.1088/0004-637x/810/1/28
  • Peer Reviewed / Open Access
• [Journal Article] New readout and data-acquisition system in an electron-tracking Compton camera for MeV gamma-ray astronomy (SMILE-II) (2015)
  • Author(s): T.Mizumoto, Y.Matsuoka , Y.Mizumura, T.Tanimori, H.Kubo, A.Takada, S.Iwaki, T.Sawano, K.Nakamura, S.Komura, S. Nakamura, T.Kishimoto, M.Oda, S.Miyamoto, T.Takemura, J.D.Parker, D.Tomono, S.Sonoda, K.Miuchi, S.Kurosawa
  • Journal Title: Nuclear Instruments and Methods in Physics Research Section A Volume: 800 Pages: 40-50
  • DOI: 10.1016/j.nima.2015.08.004
  • Peer Reviewed / Open Access
• [Journal Article] Performance of a New Electron-Tracking Compton Camera under Intense Radiations from a Water Target irradiated with a Proton Beam (2015)
  • Author(s): Y. Matsuoka, T. Tanimori, H. Kubo, A. Takada, J.D. Parker, T. Mizumoto, Y. Mizumura, S. Iwaki, T. Sawano, S. Komura, T. Kishimoto, M. Oda, T. Takemura, S. Miyamoto, S. Sonoda, D. Tomono, K. Miuchi, S. Kabuki, S. Kurosawa
  • Journal Title: Journal of Instrumentation Volume: 10 Issue: 01 Pages: C01053-C01053
  • DOI: 10.1088/1748-0221/10/01/c01053
  • Peer Reviewed / Open Access
• [Journal Article] Development of a 30 cm-cube Electron-Tracking Compton Camera for the SMILE-II Experiment (2014)
  • Author(s): Y.Mizumura, T.Tanimori et al.
  • Journal Title: Journal of Instrumentation Volume: in press
  • Peer Reviewed
• [Journal Article] SMILE-II : Balloon-borne Telescope for Background-suppressed Soft Gamma-ray Imaging (2013)
  • Author(s): T. Sawano, T. Tanimori, H. Kub o, A. Takada, J. D. Parker, T. Mizumoto, S. Sonoda, Y. Mizumura, D. Tomono, K. Nakamura, Y. Matsuoka, S. Komura, Y. Sato, S. Nakamura, K. Miuchi, S. Kabuki, Y. Kishimoto, S. Kurosawa, S. Iwaki, M. Tanaka, M. Ik eno, and T. Uchida
  • Journal Title: JPS Conference Proceedings Volume: 1 Pages: 013099-013099
  • DOI: 10.7566/jpscp.1.013099
  • Peer Reviewed / Open Access
• [Journal Article] Simulation of Gas Avalanche in a Micro Pixel Chamber using Garfield++ (2013)
  • Author(s): A.Takada, T. Tanimori et al.
  • Journal Title: Journal of Instrumentation Volume: 8
  • Peer Reviewed
• [Journal Article] Spatial resolution of a μPIC-based neutron imaging detector (2013)
  • Author(s): J.D.Parker, T.Tanimori et al.
  • Journal Title: Nucl. Instrum. & Meth. A Volume: 726 Pages: 155-161
  • Peer Reviewed
• [Journal Article] SMILE-II: Balloon-borne Telescope for Background-suppressed Soft Gamma-ray Imaging (2013)
  • Author(s): T.Sawano, T.Tanimori et al.
  • Journal Title: JPS Conf. Proc Volume: 1 Pages: 013099-17
  • Peer Reviewed
• [Presentation] Balloon-borne experiment for deep sky survey of MeV gamma rays using an Electron-Tracking Compton Camera (2015)
  • Author(s): S.Komura T.Tanimori et al.
  • Organizer: 34th International Cosmic Ray Conference
  • Place of Presentation: The Hague, The Netherlands
  • Year and Date: 2015-07-30
  • Int'l Joint Research
• [Presentation] SMILE: Sub-MeV/MeV gamma-ray survey using electron-tracking Compton camera loaded on balloon (2015)
  • Author(s): A.Takada, T.Tanimori et al.
  • Organizer: High-Energy Large- and Medium-class Space Missions in the 2020s
  • Place of Presentation: Chicago, USA
  • Year and Date: 2015-06-29
  • Int'l Joint Research
• [Presentation] Deep sky survey of MeV gamma rays due to advanced Electron Tracking Compton Camera (ETCC) with balloon experiment (2015)
  • Author(s): T.Tanimori et al.
  • Organizer: 13th Pisa Meeting on Advanced Detectors
  • Place of Presentation: Erba, Italy
  • Year and Date: 2015-05-24
  • Int'l Joint Research
• [Presentation] Possibility of deep all sky survey of MeV gamma rays due to Electron Tracking Compton Camera (ETCC) (2014)
  • Author(s): T.Tanimori et al.
  • Organizer: Synergistic View of the High Energy Sky (10th INTEGRAL Workshop)
  • Place of Presentation: Annapolis, MD, USA
  • Year and Date: 2014-09-15 – 2014-09-19
• [Presentation] High sensitivity observation for celestial MeV gamma rays by Electron Tracking Compton camera with a balloon borne experiment (2014)
  • Author(s): T.Tanimori et al.
  • Organizer: Technology and Instrumentation in Particle Physics 2014 (TIPP2014)
  • Place of Presentation: Amsterdam Neitherland
  • Year and Date: 2014-06-02 – 2014-06-06
• [Presentation] SMILE-II: Observation of Celestial and Terrestrial MeV Gamma rays at Balloon altitude using Electron Tracking Compton Camera in the North Pole (2013)
  • Author(s): T.Tanimori et al.
  • Organizer: The 21st ESA Symposium on European Rocket and Balloon Program and Related Research
  • Place of Presentation: Thun Switzerland
• [Presentation] Imaging detection for GRBs with high sensitivity and good polarimetry by Electron Tracking Compton camera (2013)
  • Author(s): T.Tanimori
  • Organizer: EUL GRB Workshop 2013
  • Place of Presentation: Moscow State Univ. Russia
  • Invited
• [Presentation] Possible high sensitivity observations for both line and continuum MeV gamma rays from Super Nova and Remnants by electron tracking Compton camera (2013)
  • Author(s): T.Tanimori
  • Organizer: Long-term Workshop on Supernovae and Gamma-Ray Bursts
  • Place of Presentation: 基礎物理学研究所、京都
• [Presentation] Observation of relativistic electron and proton precipitations with Balloon Experiment around the Polar Cap (2013)
  • Author(s): T.Tanimori et al.
  • Organizer: International CAWSES-II Symposium
  • Place of Presentation: 名古屋大学豊田ホール
• [Remarks] SMILE プロジェクト
  • URL: http://www-cr.scphys.kyoto-u.ac.jp/research/MeV-gamma/wiki/wiki.cgi
• [Remarks] SMILE Project
  • URL: http://www-cr.scphys.kyoto-u.ac.jp/research/MeV-gamma/wiki/wiki.cgi
• [Remarks] 天体MeVガンマ線検出器の開発
  • URL: http://www-cr.scphys.kyoto-u.ac.jp/research/MeV-gamma/index.html