• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Systematic study on the radiation damage of silicon semiconductor tracking detectors at operating site

Research Project

Project/Area Number 16K05386
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionHigh Energy Accelerator Research Organization

Principal Investigator

kondo takahiko  大学共同利用機関法人高エネルギー加速器研究機構, その他部局等, 名誉教授 (30150006)

Research Collaborator OTONO Hidetoshi  九州大学, 先端素粒子物理研究センター
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords素粒子物理実験装置 / シリコン半導体飛跡検出器 / 放射線損傷 / ヒッグス粒子探索 / シリコン飛跡検出器 / 素粒子実験測定器 / シリコン半導体検出器 / 素粒子実験 / 測定器技術
Outline of Final Research Achievements

Using the LHC accelerator at CERN in Switzerland, physics experiments to search new particles and phenomena have been performed. Higgs particles were discovered in 2012. 4000 modules of silicon semiconductor tracking detectors installed at the center of the ATLAS Experiment are subject to changes of their performance due to radiation damages. We have been continuously monitoring the changes due to radiation to optimize the operational conditions. The evolution of the leakage current turned out to agree with model predictions. It has been quite difficult to measure the full depletion voltage. Various observation indicated the full depletion voltage changed faster than the model expectation. There seems to be no strong issues expected in safe operation up to the end of 2023.

Academic Significance and Societal Importance of the Research Achievements

1990年代にほぼ確立したシリコン半導体検出器の放射線損傷モデルは、少量サンプルを強いビームで短期間に行ったテーブルトップ実験に基づいている。放射線損傷のアニーリングなどはセンサー温度を上げて加速させた結果によるものである。本研究はそれとは対照的に、4千台という多数の実機で、10年以上の長期にわたって、単位時間当たりの放射線量は低い状態で、放射線損傷の進行具合を測定し放射線損傷モデルとの詳細な比較を行った。経験した研究法と、放射線損傷モデルの有効性の検証は、将来より強い放射線環境下で使われるコライダー実験の検出器の設計や運転に有意義なインプットとなり、重要な素粒子実験技術を発展させる。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (22 results)

All 2018 2017 Other

All Int'l Joint Research (18 results) Presentation (4 results) (of which Int'l Joint Research: 1 results)

  • [Int'l Joint Research] Cambridge University/University of Liverpool/University of Sheffield(英国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] CERN/Université de Genève(スイス)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] DESY/Freiburg University(ドイツ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] KEK/九州大学/大阪大学(日本)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] LBNL/UC Santa Cruz(米国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research]

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] シェフィールド大学/ラザフォード研究所/ケンブリッジ大学(英国)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] フライブルグ大学(ドイツ)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] バークレイ研究所(米国)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] 九州大学/大阪大学(日本)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] セルン研究所(スイス)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research]

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] シェフィールド大学/ラザフォード研究所/ケンブリッジ大学(英国)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] フライブルグ大学(ドイツ)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] バークレイ研究所(米国)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] 九州大学(日本)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] セルン研究所(スイス)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research]

    • Related Report
      2016 Research-status Report
  • [Presentation] LHC-ATLAS実験シリコンストリップ検出器の放射線損傷の現状2018

    • Author(s)
      近藤敬比古
    • Organizer
      日本物理学会2018年年次大会@東京理科大学
    • Related Report
      2018 Annual Research Report
  • [Presentation] Measurements with the ATLAS strip detector (SCT)2018

    • Author(s)
      近藤敬比古
    • Organizer
      Radiation effects at the LHC experiments and impact on operation and performance
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] LHC -ATLASATLAS 実験 シリコンストップ検出器の放射線損傷の現状2018

    • Author(s)
      近藤敬比古
    • Organizer
      日本物理学会2018年年次大会
    • Related Report
      2017 Research-status Report
  • [Presentation] Radiation damage status of the ATLAS silicon strip detectors2017

    • Author(s)
      Takahiko Kondo
    • Organizer
      11th International "Hiroshima" Symposium on the Development and Application of Semiconductor Tracking Detectors (HSTD11) at OIST, Okinawa, Japan
    • Related Report
      2017 Research-status Report

URL: 

Published: 2016-04-21   Modified: 2022-02-22  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi