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Search for structures of vacuum with a high precision laser and a strong magnetic field

Research Project

Project/Area Number 16H03970
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 InstitutionThe University of Tokyo

Principal Investigator

Namba Toshio  東京大学, 素粒子物理国際研究センター, 助教 (40376702)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥13,650,000 (Direct Cost: ¥10,500,000、Indirect Cost: ¥3,150,000)
Fiscal Year 2018: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2017: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2016: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Keywords素粒子物理実験 / 真空 / レーザー / パルス磁石 / 素粒子物理学実験 / 素粒子実験 / 高性能レーザー
Outline of Final Research Achievements

Some theories of modern physics predict structures of vacuum. The vacuum polarization can be created by strong pulsed magnetic fields, and the polarization can be detected by a high precision laser. An optical cavity made by two high reflection mirrors is used for the enhancement of its sensitivity. Based on the results of a prototype experiment, the laser system has been improved and been stabilized. The vacuum chamber and the pulsed magnets have been also improved. The development of the experimental apparatus has almost been completed.

Academic Significance and Societal Importance of the Research Achievements

これまでは実験の対象とされてこなかった「真空」について着目することで、新たな分野として真空の物理学が注目されるようになった。今回は真空の構造の探索には至らなかったが、量子電磁気学の予言する真空偏極まであと3.5桁の感度で探索をおこない、そこまでは真空の構造が無いことが確認できた。
また、技術的側面では、基礎技術である防振技術やレーザーの安定化、共振器の制御技術の開発、製作において大きな進展が得られ、他の分野での応用も期待される。

Report

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

    (16 results)

All 2019 2018 2017 2016 Other

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (12 results) (of which Int'l Joint Research: 3 results) Remarks (3 results)

  • [Journal Article] The OVAL experiment: a new experiment to measure vacuum magnetic birefringence using high repetition pulsed magnets2017

    • Author(s)
      Xing Fan, Shusei Kamioka, Toshiaki Inada, Takayuki Yamazaki, Toshio Namba, Shoji Asai, Junko Omachi, Kosuke Yoshioka, Makoto Kuwata-Gonokami, Akira Matsuo, Koushi Kawaguchi, Koichi Kindo, and Hiroyuki Nojiri
    • Journal Title

      The European Physical Journal D

      Volume: 71 Issue: 11 Pages: 308-308

    • DOI

      10.1140/epjd/e2017-80290-7

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Presentation] OVAL実験の感度を向上を目指した新型パルス磁石の考察2019

    • Author(s)
      成田佳奈香
    • Organizer
      日本物理学会第74回年次大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] OVAL実験: パルス磁石と高フィネス共振器を用いた真空複屈折の探索2019

    • Author(s)
      上岡修星
    • Organizer
      日本物理学会第74回年次大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] OVAL実験: パルス磁石と高フィネス共振器を用いた真空複屈折の探索2018

    • Author(s)
      上岡修星
    • Organizer
      日本物理学会2018年秋季大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] OVAL実験: パルス磁石と高フィネス共振器を用いた真空複屈折の探索2018

    • Author(s)
      上岡修星、樊星、稲田聡明、山崎高幸、難波俊雄、浅井祥仁、大間知潤子、吉岡孝高、五神真、松尾晶、金道浩一、野尻浩之
    • Organizer
      日本物理学会第73回年次大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] パルス磁石と高フィネス共振器を用いた真空複屈折の探索I2017

    • Author(s)
      樊星
    • Organizer
      日本物理学会第72回年次大会
    • Place of Presentation
      大阪大学(大阪府豊中市)
    • Year and Date
      2017-03-17
    • Related Report
      2016 Annual Research Report
  • [Presentation] パルス磁石と高フィネス共振器を用いた真空複屈折の探索II2017

    • Author(s)
      上岡修星
    • Organizer
      日本物理学会第72回年次大会
    • Place of Presentation
      大阪大学(大阪府豊中市)
    • Year and Date
      2017-03-17
    • Related Report
      2016 Annual Research Report
  • [Presentation] Search for Vacuum Magnetic Birefringence with Pulsed Magnets2017

    • Author(s)
      S. Kamioka
    • Organizer
      9th International workshop on Fundamental Physics Using Atoms (FPUA)
    • Place of Presentation
      京都大学(京都府京都市)
    • Year and Date
      2017-01-10
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Search for Vacuum magnetic Birefringence with Pulsed Magnets2017

    • Author(s)
      Shusei Kamioka, X. Fan, T. Inada, T. Yamazaki, T. Namba, S. Asai, J. Omachi, K. Yoshioka, M. Kuwata-Gonokami, A. Matsuo, K. Kindo, H. Nojiri
    • Organizer
      Light driven Nuclear-Particle physics and Cosmology 2017 (LNPC17)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] LSW experiments with pulsed magnets + Vacuum Magnetic Birefringence (VMB)2017

    • Author(s)
      Toshiaki Inada
    • Organizer
      Workshop on HIgh MAgnetic Fields for FUNdamental Physics (HIMAFUN)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] パルス磁石と高フィネス共振器を用いた真空複屈折の探索2017

    • Author(s)
      上岡修星、樊星、稲田聡明、山崎高幸、難波俊雄、浅井祥仁、大間知潤子、吉岡孝高、五神真、 松尾晶、金道浩一、野尻浩之
    • Organizer
      日本物理学会2017年秋季大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] パルス磁石を用いた真空複屈折の探索I2016

    • Author(s)
      樊星
    • Organizer
      日本物理学会2016年秋季大会
    • Place of Presentation
      宮崎大学(宮崎県宮崎市)
    • Year and Date
      2016-09-22
    • Related Report
      2016 Annual Research Report
  • [Presentation] パルス磁石を用いた真空複屈折の探索II2016

    • Author(s)
      上岡修星
    • Organizer
      日本物理学会2016年秋季大会
    • Place of Presentation
      宮崎大学(宮崎県宮崎市)
    • Year and Date
      2016-09-22
    • Related Report
      2016 Annual Research Report
  • [Remarks] Tabletop Experiments

    • URL

      https://tabletop.icepp.s.u-tokyo.ac.jp

    • Related Report
      2018 Annual Research Report
  • [Remarks] Tabletop Experiemnts

    • URL

      https://tabletop.icepp.s.u-tokyo.ac.jp/

    • Related Report
      2017 Annual Research Report
  • [Remarks] Tabletop Experiments

    • URL

      http://tabletop.icepp.s.u-tokyo.ac.jp/Tabletop_experiments/Home.html

    • Related Report
      2016 Annual Research Report

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Published: 2016-04-21   Modified: 2020-03-30  

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