Development of CdTe detector having high energy resolution-toward the search for the double-beta decay-

• Project/Area Number: 21740180
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Kyoto University
• Principal Investigator: ICHIKAWA Atsuko Kyoto University, 大学院・理学研究科, 准教授 (50353371)
• Project Period (FY): 2009 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2010: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000); Fiscal Year 2009: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
• Keywords: 素粒子(実験) / テルル化カドミウム / ダブルベータ崩壊 / 放射線検出器

Research Abstract

Towards the future neutrino-less double beta decay search, we have developed a CdTe detector of more than 5mm thickness and having high energy resolution for a few MeV radiations.
The CdTe semiconductor has characteristics that the signal size depends on the interaction point, which worsen the energy resolution as the radiation detector. We have obtained the high energy resolution of 2%(FWHM) for the 662 keV gamma ray by correcting the signal pulse height using the pulse shape information.

Research Products

• [Presentation] 大型で高エネルギー分解能のCdTe 半導体検出器の開発 (2011)
  • Author(s): 平木貴宏、市川温子、木河達也、中家剛、南野彰宏、山内隆寛
  • Organizer: 日本物理学会
  • Place of Presentation: 新潟大学
  • Year and Date: 2011-03-28
• [Presentation] 大型で高エネルギー分解能のCdTe半導体検出器の開発 (2011)
  • Author(s): 平木貴宏
  • Organizer: 日本物理学会
  • Place of Presentation: 新潟大学
  • Year and Date: 2011-03-28
• [Presentation] 高エネルギー分解能CdTe検出器の開発 (2010)
  • Author(s): 木河達也, 市川温子, 中家剛, 横山将志
  • Organizer: 日本物理学会
  • Place of Presentation: 岡山大学
  • Year and Date: 2010-03-23
• [Remarks] ホームページ等
  • URL: http://www-he.scphys.kyoto-u.ac.jp/member/ichikawa/CdTeWiki