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Super-flat spin-polarized electron beam generation from a robust GaAs cathode by 6 dimensional phase-space rotation

Research Project

Project/Area Number 17H02898
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionHiroshima University

Principal Investigator

KURIKI MASAO  広島大学, 先端物質科学研究科, 教授 (80321537)

Co-Investigator(Kenkyū-buntansha) 金 秀光  大学共同利用機関法人高エネルギー加速器研究機構, 加速器研究施設, 助教 (20594055)
山本 尚人  大学共同利用機関法人高エネルギー加速器研究機構, 加速器研究施設, 助教 (60377918)
柏木 茂  東北大学, 電子光理学研究センター, 准教授 (60329133)
清宮 裕史  大学共同利用機関法人高エネルギー加速器研究機構, 加速器研究施設, 特別助教 (20756720)
坂上 和之  早稲田大学, 理工学術院, 主任研究員(研究院准教授) (80546333)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥19,500,000 (Direct Cost: ¥15,000,000、Indirect Cost: ¥4,500,000)
Fiscal Year 2019: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2018: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2017: ¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
Keywordsリニアコライダー / 入射器 / エミッタンス交換 / 電子ビーム / 加速器 / 位相空間回転 / 偏極電子ビーム / 扁平ビーム / 空間電荷効果 / スピン偏極 / スピン偏極電子ビーム源 / 極低エミッタンス
Outline of Final Research Achievements

We studied x-y asymmetric beam generation for linear colliders by phase-space rotation technique. According to our result, the non-linear space charge effect is critical and causes a significant remittance growth. To prevent this problem, we propose a new method additional introducing xz emittance exchange. In this method, the beam is generated with a large spot size to prevent the non-linear space charge effect. Although a tiny y emittance is obtained by xy rotation, but the x emittance becomes too large. The large x emittance is exchanged with z-emittance by the emittance exchange technique. The study of the new proposal has been started from 2020 JFY.

Academic Significance and Societal Importance of the Research Achievements

本研究により、単純なxy交換によるリニアコライダーのためのビーム生成には困難があることがあきらかとなった。一方で、xy交換にくわえ、xz交換を加える手法の提案につながった。新手法は旧手法で問題となった課題の克服が期待でき、リニアコライダーのためのビーム生成が可能になると期待される。これにより、加速器の構成が大幅に単純化され、コスト低減、工期の短縮、運転の単純化、など社会的、技術的、科学的メリットが期待される。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (24 results)

All 2020 2019 2018 2017 Other

All Int'l Joint Research (3 results) Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (20 results) (of which Int'l Joint Research: 7 results,  Invited: 3 results)

  • [Int'l Joint Research] 北イリノイ大学/アルゴンヌ国立研究所/ロスアラモス国立研究所(米国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Argonne National Laboratory/Northern Illinois Unverisity/Los Alamos National Laboratory(米国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Northern Illinois University/Argonne National Laboratory(米国)

    • Related Report
      2017 Annual Research Report
  • [Journal Article] Negative Electron affinity GaAs Cathode Activation with CsKTe Thin Film2019

    • Author(s)
      Masao Kuriki and Kazunari Masaki
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 1350 Issue: 1 Pages: 012047-012047

    • DOI

      10.1088/1742-6596/1350/1/012047

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] 6次元エミッタンス交換による超扁平リニアコライダー衝突ビームの直接生成2020

    • Author(s)
      栗木雅夫、柏木茂、山本尚人、金秀光、清宮裕史、山本康央、早野仁司、坂上和之、鷲尾方一
    • Organizer
      日本物理学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Cs-K-Te薄膜によるGaAsスピン偏極フォトカソードの活性化研究2019

    • Author(s)
      栗木雅夫, 正木一成, 郭磊
    • Organizer
      日本物理学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 位相空間回転によるリニアコライダーのための高ルミノシティ扁平ビームの直接生成2019

    • Author(s)
      田村遼平, 西村武, 栗木雅夫, John Power, 早野仁司, 金秀光, 許斐太郎, 清宮裕史, 山本尚人, Philippe Piot, 柏木茂, 坂上和幸, 鷲尾方一
    • Organizer
      日本物理学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] CsKTeヘテロ接合によるGaAsカソードの高耐久化2019

    • Author(s)
      栗木 雅夫,正木 一成,郭 磊
    • Organizer
      日本加速器学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] KEK-STFにおける極低エミッタンス扁平ビーム生成実験2019

    • Author(s)
      田村 遼平,栗木 雅夫,早野 仁司,山本 尚人,金 秀光,清宮 裕司
    • Organizer
      日本加速器学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] EFFECT OF INITIAL PARAMETERS ON THE SUPER FLAT BEAM GENERATION WITH THE PHASE-SPACE ROTATION FOR LINEAR COLLIDERS2019

    • Author(s)
      M. Kuriki, R. Tamura, H. Hayano, X.J. Jin, T. Konomi, Y. Seimiya, N. Yamamoto, S. Kashiwagi, P. Piot, J.G. Power, K. Sakaue, M. Washio
    • Organizer
      International Accelerator Conference 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] NEGATIVE ELECTRON AFFINITY GaAs CATHODE ACTIVATION WITH CsKTeTHIN FILM2019

    • Author(s)
      M.Kuriki ,K.Masaki
    • Organizer
      International Accelerator Conference 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] GENERATION HIGH-CHARGE OF FLAT BEAMS AT THE ARGONNE WAKE FIELD ACCELERATOR2019

    • Author(s)
      T.Xu,G.Ha ,M.Kuriki ,P. Piot ,J.G.Power ,E.Wisniewski ,M.Conde
    • Organizer
      International Accelerator Conference 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Cs-K-Te薄膜によるGaAsスピン偏極フォトカソードの活性化研究2019

    • Author(s)
      栗木雅夫、正木一成、郭磊
    • Organizer
      日本物理学会年会、九州大学伊都キャンパス
    • Related Report
      2018 Annual Research Report
  • [Presentation] 位相空間回転によるリニアコライダーのための高ルミノシティ扁平ビームの直接生成2019

    • Author(s)
      田村遼平、栗木雅夫、他
    • Organizer
      日本物理学会年会、九州大学伊都キャンパス
    • Related Report
      2018 Annual Research Report
  • [Presentation] 素粒子標準理論を超える物理を見すえた加速器研究2019

    • Author(s)
      栗木雅夫
    • Organizer
      日本物理学会年会、九州大学伊都キャンパス
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] CsKTe薄膜によるGaAsのNEA活性化研究2018

    • Author(s)
      正木一成、栗木雅夫
    • Organizer
      日本加速器学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 位相空間回転によるリニアコライダーのための高ルミノシティ扁平ビームの生成2018

    • Author(s)
      栗木雅夫、他
    • Organizer
      日本加速器学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] HIGH ASPECT RATIO BEAM GENERATION WITH THE PHASE-SPACE ROTATION TECHNIQUE FOR LINEAR COLLIDERS2018

    • Author(s)
      M. Kuriki et al.
    • Organizer
      Linear Accelerator Conference (LINAC2018), Beijing, China
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] NEA SURFACE ACTIVATION OF GaAs PHOTOCATHODE WITH CO22018

    • Author(s)
      L. Guo, M. Kuriki, H. Iijima, and K. Uchida
    • Organizer
      International Particle Accelerator Conference(IPAC2018), Vancouver, Canada
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Super Flat Beam Generation with Emittance Exchange Techniques for Linear Colliders2018

    • Author(s)
      栗木雅夫
    • Organizer
      ビーム物理研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Emittance Exchange Program at KEK-STF2018

    • Author(s)
      Masao KURIKI
    • Organizer
      AFAD 2018, Daejong, Korea
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] エミッタンス交換によるリニアコライダー のための高アスペクト比電子ビームの直接 生成2018

    • Author(s)
      栗木雅夫、柏木茂、早野仁司、清宮裕史、山本尚人、 坂上和之、鷲尾正一
    • Organizer
      日本物理学会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Phase-space rotation technique and applications2018

    • Author(s)
      Masao KURIKI
    • Organizer
      International School on Electron Accelerator, Free Electron Laser and Application of Electron Beam and THz radiation 6-9, March, 2018, IUAC, Delhi, India
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] エミッタンス交換による ビームバンチ形状の最適化2017

    • Author(s)
      栗木雅夫
    • Organizer
      ビーム物理研究会 2017/11/16-18 岡崎コンファレンスセンター
    • Related Report
      2017 Annual Research Report

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Published: 2017-04-28   Modified: 2022-05-23  

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