Development of a large CdTe detector having high energy resolution for double-beta decay search

• Project/Area Number: 23340066
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Kyoto University
• Principal Investigator: ICHIKAWA Atsuko 京都大学, 理学(系)研究科(研究院), 准教授 (50353371)
• Project Period (FY): 2011-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥19,500,000 (Direct Cost: ¥15,000,000、Indirect Cost: ¥4,500,000); Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2013: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2012: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000); Fiscal Year 2011: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
• Keywords: 半導体検出器 / 二重ベータ崩壊 / ニュートリノを伴わない二重ベータ崩壊 / ガンマ線検出器

Outline of Final Research Achievements

We did an R&D of the CdTe semi-conductor detector to be used for the search for the neutrinoless double-beta decay. Good energy resolution was obtained with a 10mm-thick device by using signal waveforms. However, difference of the performance in different crystals was observed. A stack of 2mm-thick devices were also produced and good energy resolution was obtained.

Research Products

• [Presentation] 0νββ崩壊探索実験AXELのための紫外光感度を持つPMTおよびMPPCの評価 (2015)
  • Author(s): 潘晟
  • Organizer: 日本物理学会
  • Place of Presentation: 早稲田大学
  • Year and Date: 2015-03-21 – 2015-03-24
• [Presentation] 二重ベータ崩壊探索のためのXe比例シンチレーションTPC検出器用MPPCの性能評価 (2014)
  • Author(s): 石山優貴
  • Organizer: 日本物理学会
  • Place of Presentation: 東海大学
• [Presentation] 二重ベータ崩壊探索に向けたキセノン比例シンチレーションTPC検出器の開発 I (2013)
  • Author(s): 市川温子
  • Organizer: 日本物理学会
  • Place of Presentation: 高知大学
• [Presentation] 二重ベータ崩壊探索に向けたキセノン比例シンチレーションTPC検出器の開発 II (2013)
  • Author(s): 秋山晋一
  • Organizer: 日本物理学会
  • Place of Presentation: 高知大学
• [Presentation] 大型で高エネルギー分解能のCdTe半導体検出器の開発 (2012)
  • Author(s): 平木貴宏
  • Organizer: 日本物理学会第67回年次大会
  • Place of Presentation: 関西学院大学
• [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2011年秋季大会
  • Place of Presentation: 弘前大学