The development of Diamond Compton Telescope

2004 Fiscal Year Final Research Report Summary

• Project/Area Number: 13354002
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 展開研究
• Research Field: 素粒子・核・宇宙線
• Research Institution: Kanagawa University
• Principal Investigator: KASHIWAGI Toshisuke Kanagawa Univ., Dep.of engineering, Assistant Professor, 工学部, 講師 (40202006)
• Co-Investigator(Kenkyū-buntansha): HIBINO Kinya Kanagawa Univ., Dep.of engineering, Associate Professor, 工学部, 准教授 (80260991) ; OKUNO Shoji Kanagawa Univ., Kanagawa Univ., Assistant Professor, 工学部, 助教 (90281451) ; TAKASHIMA Takeshi Japan Aerospace Exploration Agency, Research Associate, 宇宙科学研究本部・宇宙プラズマ研究系, 助手 (10298193) ; YOSHIDA Kenji Shibaura institute of Technology, College of Systems Engineering, Associate Professor, システム工学部, 准教授 (90260984)
• Project Period (FY): 2001 – 2004
• Keywords: Diamond / Radiation Detector

Research Abstract

Diamonds have attractive properties for use as radiation detectors. Recent advances in diamond fabrication techniques have made it possible to produce almost perfect single crystal materials that have electrical properties suitable for radiation detectors. We therefore developed detectors made of high-purity synthetic 2a diamonds grown by a high-pressure, high-temperature method and investigated their basic properties. These detectors have Schottky and Ohmic electrodes, and the leakage current is less than 20 pA with reverse bias voltages up to 2.4 kV demonstrating that the detector withstands high bias voltage. The results of testing the electrical properties show that the electrodes work well The best detector achieved an energy resolution of 15.4 keV(FWHM) for 5.486 MeV Alpha particles from Am-241. By the way, the diamond detector has an advantage to observation of "low/medium" energy gamma rays as a Compton telescope. The primary advantage of the diamond detector can reduce the photoelectric effect in low energy range, which is background noise for tracking of the Compton recoil electron. We examined the performance of Diamond Compton Telescope in the low energy band (10 keV 10MeV) by the Monte Carlo simulation.

Research Products

• [Journal Article] Investigation of basic characteristics of synthetic diamond radiation detectors (2006)
  • Author(s): T.Kashiwagi., et al.
  • Journal Title: IEEE Transactions on Nuclear Science 53 Pages: 600-635
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] Investigation of basic characteristics of synthetic diamond radiation detectors (2006)
  • Author(s): T.Kashiwagi, K.Hibino, H.Kitamura, K.Mori, S.Okuno, T.Takashima, Y.Uchihori, K.Yajima, M.Yokota, K.Yoshida
  • Journal Title: IEEE Transactions on Nuclear Science Volume 53, No.2 Pages: 630-635
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] 人工ダイヤモンド・センサの開発 (2003)
  • Author(s): 柏木利介, 他
  • Journal Title: 神奈川大学工学部研究所所報 26 Pages: 95-104
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] The Design of Diamond Compton Telescope
  • Author(s): K.Hibino, T.Kashiwagi., et al.
  • Journal Title: Astrophysics and Space Science (in print)
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] The Design of Diamond Compton Telescope
  • Author(s): Kinya Hibino, Toshisuke Kashiwagi, Shoji Okuno, Kaori Yajima, Yukio Uchihori, Hisashi Kitamura, Takeshi Takashima, Mamoru Yokota, Kenji Yoshida
  • Journal Title: Astrophysics and Space Science (in print)
  • Description: 「研究成果報告書概要(欧文)」より