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Development of non-destructive beam monitor using Cherenkov radiation

Research Project

Project/Area Number 18K11915
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 80040:Quantum beam science-related
Research InstitutionTohoku University

Principal Investigator

Nanbu Kenichi  東北大学, 電子光理学研究センター, 技術専門職員 (00422072)

Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywordsチェレンコフ放射 / チェレンコフ回折放射 / 非破壊ビーム診断 / ビームモニター / チェレンコフ回折放射光 / 非破壊ビームモニター / 非破壊ビーム診断システム / ビーム位置モニター / チェレンコフ光 / ビーム診断
Outline of Final Research Achievements

Cherenkov diffraction radiation (ChDR), which is generated when electrons pass near dielectric mediums, is expected to be a tool for non-destructive beam diagnostics. The intensity of Cherenkov radiation is lower when a charged particle passes in the vicinity of a dielectric than when it passes through the dielectric. The intensity of ChDR is strongly dependent on the charged particles' position with respect to the dielectric. In this study, we exploited this dependence to estimate the beam position and evaluated the effect of beam size on the intrinsic position error. Moreover, we observed ChDR in THz-region using two types of radiators having different refractive indexes at t-ACTS. The measured spectra were different from the estimated spectra, hence we will conduct a detailed study of spectra and impact parameter dependence of ChDR.

Academic Significance and Societal Importance of the Research Achievements

チェレンコフ回折放射の強度分布からビーム位置を測定する手法の検討を行うとともに、テラヘルツ帯域でのチェレンコフ回折放射の観測に成功し、その波長分布を得る事に成功した。これは実用化向けた最初の足掛かりであるといえる。ビームモニターはビームダイナミクスの理解などはもとより加速器の運転に必要不可欠なツールである。チェレンコフ回折放射を用いたビームモニターは、非破壊で設置場所を選ばず、構造が簡単で安価に製作可能であると考えられる。実用化に成功すれば、医療用加速器をはじめとする加速器のリアルタイムビームパラメータ確認が可能となり、加速器の安定な運転に貢献できると考える。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (10 results)

All 2020 2019 2018 Other

All Journal Article (2 results) (of which Open Access: 2 results,  Peer Reviewed: 1 results) Presentation (6 results) (of which Int'l Joint Research: 3 results) Remarks (2 results)

  • [Journal Article] Measurement of Cherenkov Diffraction Radiation from a Short Electron Bunches at t-ACTS2019

    • Author(s)
      S. Ninomiya, H. Hama, F. Hinode, K. Kanomata, S. Kashiwagi, S. Miura, N. M. Morita, T. Muto, I. Nagasawa, K. Nanbu, H. Saito, K. Takahashi, H. Yamada
    • Journal Title

      Proc. 10th Int. Particle Accelerator Conf. (IPAC'19)

      Volume: - Pages: 2536-2538

    • Related Report
      2019 Research-status Report
    • Open Access
  • [Journal Article] Bunch Length Measurement Employing Cherenkov Radiation from a Thin Silica Aerogel2018

    • Author(s)
      K. Nanbu, Y. Saito, H. Saito, S. Kashiwagi, F. Hinode, T. Muto and H. Hama
    • Journal Title

      Particles

      Volume: 1 Issue: 1 Pages: 05-314

    • DOI

      10.3390/particles1010025

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] チェレンコフ放射を用いたビーム位置モニターの開発2020

    • Author(s)
      南部健一、他
    • Organizer
      第17回日本加速器学会年会
    • Related Report
      2020 Research-status Report
  • [Presentation] Development of Beam Position Monitor Using Cherenkov Diffraction Radiation2019

    • Author(s)
      K. Nanbu, H. Hama, F. Hinode, S. Kashiwagi, and T. Muto
    • Organizer
      8th Int. Beam Instrumentation Conf. (IBIC'19)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] t-ACTS における中空誘電体からのチェレンコフ光の測定2019

    • Author(s)
      南部 健一,日出 富士雄,柏木 茂,武藤 俊哉,齊藤 寛峻,森田 希望,山田 悠樹,鹿又 健,髙橋 健, 長澤 育郎,柴田 晃太朗,三浦 禎雄,濱 広幸
    • Organizer
      第16回日本加速器学会年会
    • Related Report
      2019 Research-status Report
  • [Presentation] Measurement of Cherenkov Diffraction Radiation from Short Electron Bunches at t-ACTS2019

    • Author(s)
      S. Ninomiya, H. Hama, F. Hinode, K. Kanomata, S. Kashiwagi, S. Miura, N. M. Morita, T. Muto, I. Nagasawa, K. Nanbu, H. Saito, K. Takahashi, H. Yamada
    • Organizer
      10th Int. Particle Accelerator Conf. (IPAC'19)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] チェレンコフ光リングを用いた非破壊型ビームモニターの検討2018

    • Author(s)
      二宮 慎吾,柏木 茂,鹿又 健,齊藤 寛峻,高橋 健,長澤 育郎,南部 健一,日出 富士雄,三浦 禎雄,武藤 俊哉,濱 広幸
    • Organizer
      第15回日本加速器学会年会
    • Related Report
      2018 Research-status Report
  • [Presentation] CHERENKOV LIGHT FROM HOLLOW SILICA AEROGEL OF HAVING LOW REFRACTIVE INDEX2018

    • Author(s)
      Ken-ichi Nanbu
    • Organizer
      International Conference on Radiation and Emission in Materials
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Remarks] 東北大学電子光理学研究センター加速器ビーム物理研究部

    • URL

      https://www.lns.tohoku.ac.jp/research/abpg/

    • Related Report
      2019 Research-status Report
  • [Remarks] 加速器ビーム物理研究部

    • URL

      http://hayabusa1.lns.tohoku.ac.jp/research/abpg/

    • Related Report
      2018 Research-status Report

URL: 

Published: 2018-04-23   Modified: 2023-01-30  

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