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Efficient production of ultra-slow muonium

Research Project

Project/Area Number 17H02904
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 InstitutionHigh Energy Accelerator Research Organization

Principal Investigator

Mibe Tsutomu  大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 准教授 (80536938)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥15,600,000 (Direct Cost: ¥12,000,000、Indirect Cost: ¥3,600,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
Fiscal Year 2017: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
Keywordsミューオン / ミュオニウム / 熱化 / 冷却 / 対称性 / g-2 / EDM / ミューオニウム / 異常時期能率 / 電気双極子能率 / 異常磁気能率 / ミュオン / 素粒子実験 / ミューニウム
Outline of Final Research Achievements

Muonium is a two-body leptonic bound state consisting of a positive muon and an electron. A very low emittance muon beam can be realized by eliminating an electron from an ultra slow muonium at thermal energy, followed by acceleration. This enables a new methodology for precise measurements of anomalous magnetic moment and electric dipole moment of muon. The current bottleneck is low production efficiency of thermal energy muonium. In this research, we produced muonium emitting material made of silica aerogel with holes or grooves on its surface by laser ablation. We confirmed reproducibility, long-term stability of muonium production, and spin polarization of muonium. We have reached a quantitative understanding of relation between muonium yield and incident muon momentum distribution.

Academic Significance and Societal Importance of the Research Achievements

純粋なレプトン2体系であるミュオニウムは、理論的な不定性が少なく、素粒子標準理論を超える物理法則の研究に適しているだけでなく、ミュオンビームを一旦熱エネルギーまで減速して生成する過程を経るので、ミュオンビームを冷却する手法としても注目されている。後者は、新しい手法によるミュオンg-2・EDMの精密測定を可能とするだけでなく、透過型ミュオン顕微鏡や大規模構造のラジオグラフィなどにも応用可能な技術である。本研究で確立した室温エネルギーでのミュオニウムの生成技術は、これらに転用可能な技術である。

Report

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

    (34 results)

All 2020 2019 2018 2017 Other

All Int'l Joint Research (4 results) Journal Article (6 results) (of which Int'l Joint Research: 6 results,  Open Access: 5 results,  Peer Reviewed: 5 results) Presentation (19 results) (of which Int'l Joint Research: 16 results,  Invited: 15 results) Remarks (3 results) Funded Workshop (2 results)

  • [Int'l Joint Research] TRIUMF/ブリティッシュコロンビア大学/ビクトリア大学(カナダ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] 北京大学(中国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] 高麗大学/ソウル国立大学(韓国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] TRIUMF/University of Victoria/University of British Columbia(カナダ)

    • Related Report
      2017 Annual Research Report
  • [Journal Article] Study of muonium emission from laser-ablated silica aerogel2020

    • Author(s)
      J. Beare, K. Suzuki, T. Mibe, et al.
    • Journal Title

      arXiv (Prog. Theo. Experiment. Phys.に投稿)

      Volume: -

    • Related Report
      2019 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Performance evaluation of a silicon strip detector for positrons/electrons from a pulsed a muon beam2020

    • Author(s)
      Aoyagi T.、Honda Y.、Ikeda H.、Ikeno M.、Kawagoe K.、Kohriki T.、Kume T.、Mibe T.、Namba K.、Nishimura S.、Saito N.、Sasaki O.、Sato N.、Sato Y.、Sendai H.、Shimomura K.、Shirabe S.、Shoji M.、Suda T.、Suehara T.、Takatomi T.、Tanaka M.、Tojo J.、Tsukada K.、Uchida T.、Ushizawa T.、Wauke H.、Yamanaka T.、Yoshioka T.
    • Journal Title

      Journal of Instrumentation

      Volume: 15 Issue: 04 Pages: P04027-P04027

    • DOI

      10.1088/1748-0221/15/04/p04027

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Beam commissioning of muon beamline using negative hydrogen ions generated by ultraviolet light2019

    • Author(s)
      Nakazawa Y.、Bae S.、Choi H.、Choi S.、Iijima T.、Iinuma H.、Kawamura N.、Kitamura R.、Kim B.、Ko H.S.、Kondo Y.、Mibe T.、Otani M.、Razuvaev G.P.、Saito N.、Sue Y.、Won E.、Yamazaki T.、Yasuda H.
    • Journal Title

      Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

      Volume: 937 Pages: 164-167

    • DOI

      10.1016/j.nima.2019.05.043

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A new approach for measuring the muon anomalous magnetic moment and electric dipole moment2019

    • Author(s)
      Abe M.、Mibe T.、Saito N.、Sato Y.、Yamanaka T.、Yoshioka T.、et al.
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 2019 Issue: 5 Pages: 1-22

    • DOI

      10.1093/ptep/ptz030

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] First muon acceleration using a radio-frequency accelerator2018

    • Author(s)
      Bae S.、Choi H.、Choi S.、Fukao Y.、Futatsukawa K.、Hasegawa K.、Iijima T.、Iinuma H.、Ishida K.、Kawamura N.、Kim B.、Kitamura R.、Ko H.?S.、Kondo Y.、Li S.、Mibe T.、Miyake Y.、Morishita T.、Nakazawa Y.、Otani M.、Razuvaev G.?P.、Saito N.、Shimomura K.、Sue Y.、Won E.、Yamazaki T.
    • Journal Title

      Physical Review Accelerators and Beams

      Volume: 21 (050101) Issue: 5 Pages: 1-6

    • DOI

      10.1103/physrevaccelbeams.21.050101

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Development of a microchannel plate based beam profile monitor for a re-accelerated muon beam2018

    • Author(s)
      Kim Bongho、Bae Sunghan、Choi Hyunsuk、Choi Seonho、Kawamura Naritoshi、Kitamura Ryo、Ko Ho San、Kondo Yasuhiro、Mibe Tsutomu、Otani Masashi、Razuvaev Georgiy P.、Won Eunil
    • Journal Title

      Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

      Volume: 899 Pages: 22-27

    • DOI

      10.1016/j.nima.2018.05.014

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Muon g-2 experiments2020

    • Author(s)
      三部 勉
    • Organizer
      KEK-PH 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Muon (g-2)/EDM at J-PARC2020

    • Author(s)
      三部 勉
    • Organizer
      第10回Muon科学と加速器研究
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Status of muon EDM experiment at J-PARC2020

    • Author(s)
      三部 勉
    • Organizer
      Kick-off workshop for the search of a muon EDM using the frozen spin technique at PSI
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Muon g-2/EDM measurement at J-PARC2019

    • Author(s)
      三部 勉
    • Organizer
      2nd IBS Conference on Dark World
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Experiment update J-PARC2019

    • Author(s)
      三部 勉
    • Organizer
      INT Workshop INT-19-74W, Hadronic contributions to (g-2)μ
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Muon g-2 experiments2019

    • Author(s)
      三部 勉
    • Organizer
      FFK-2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Muon dipole moments2019

    • Author(s)
      三部 勉
    • Organizer
      International school on charged lepton flavor violation
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Muon g-2/EDM measurement at J-PARC2019

    • Author(s)
      三部 勉
    • Organizer
      Seminar at Peking university
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Measurement of muon's g-2 and EDM with a reaccelerated thermal muon beam2018

    • Author(s)
      T. Mibe
    • Organizer
      Workshop on muonium and related physics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Development of the muonium production target for the J-PARC g-2/EDM experiment2018

    • Author(s)
      K. Suzuki
    • Organizer
      Workshop on muonium and related physics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Muon g-2/EDM measurement at J-PARC2018

    • Author(s)
      T. Mibe
    • Organizer
      The 15th International Workshop on Tau Lepton Physics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Muon g-2/EDM Experiment at J-PARC2018

    • Author(s)
      Tsutomu Mibe
    • Organizer
      Hadronic Light-by-Light Working Group Workshop
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] J-PARC muon g-2/EDM experiment: 2017 experiment result of muonium emission from laser-ablated silica aerogel2018

    • Author(s)
      Sirui Li, T. Mibe, et al.
    • Organizer
      日本物理学会年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Studies on muonium emission from laser-ablated silica aerogel targets for the polarized, ultra-cold muon source of the muon g-2/EDM experiment at J-PARC2017

    • Author(s)
      K. Suzuki, T. Mibe, et al.
    • Organizer
      2017 International Workshop on Polarized Sources, Targets, and Polarimetry
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Optimization of thermal muonium yield from silica aerogel with laser-ablated holes for muon g-2/EDM experiment at J-PARC2017

    • Author(s)
      Sirui Li, T. Mibe, et al.
    • Organizer
      日本物理学会年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Muon g-2/EDM Experiment at J-PARC2017

    • Author(s)
      Glen Marshall
    • Organizer
      Workshop on Flavour Changing and Conserving Processes
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Muon g-2/EDM Experiment at J-PARC2017

    • Author(s)
      Tsutomu Mibe
    • Organizer
      18th Lomonosov Conference on Elementary Particle Physics
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Muon g-2/EDM Experiment at J-PARC2017

    • Author(s)
      Tsutomu Mibe
    • Organizer
      International Workshop on e+e- collisions from Phi to Psi 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Muon g-2/EDM Experiment at J-PARC2017

    • Author(s)
      Tsutomu Mibe
    • Organizer
      First Workshop of the Muon g-2 Theory Initiative
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Remarks] J-PARC g-2/EDM実験

    • URL

      http://g-2.kek.jp/portal/index.html

    • Related Report
      2019 Annual Research Report
  • [Remarks] J-PARC g-2/EDM 実験ホームページ

    • URL

      https://g-2.kek.jp

    • Related Report
      2018 Annual Research Report
  • [Remarks] Muon g-2/EDM at J-PARC

    • URL

      http://g-2.kek.jp/

    • Related Report
      2017 Annual Research Report
  • [Funded Workshop] International school on muon dipole moments and hadronic effects2019

    • Related Report
      2019 Annual Research Report
  • [Funded Workshop] Workshop on muonium and related physics2018

    • Related Report
      2018 Annual Research Report

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Published: 2017-04-28   Modified: 2021-02-19  

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