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Development of Synchronized Injection Gun for Laser Beat-wave Acceleration

Research Project

Project/Area Number 07558179
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section試験
Research Field プラズマ理工学
Research InstitutionOsaka University

Principal Investigator

KITAGAWA Yoneyoshi  Osaka University, Institute of Laser Engineering, Associate Professor, レーザー核融合研究センター, 助教授 (40093405)

Co-Investigator(Kenkyū-buntansha) TAKABE Hideaki  Osaka University, Institute of Laser Engineering, Associate Professor, レーザー核融合研究センター, 助教授 (20150352)
TANAKA Kazuo  Osaka University, Department of Engineering, Associate Professor, 工学部, 助教授 (70171741)
AZECHI Hiroshi  Osaka University, Institute of Laser Engineering, Associate Professor, レーザー核融合研究センター, 助教授 (90135666)
Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1996: ¥1,100,000 (Direct Cost: ¥1,100,000)
KeywordsLaser beat-wave acceleration / Electron beam / Synchronized injection / Electron spectrometer / Photocathode / 炭酸ガスレーザー / ビ-ト波加速 / 電子ビーム入射
Research Abstract

The purpose of this project is to develop the electron beam source, synchronized to the laser beat-wave. To realize a laser particle accelerator, we must put the injected electrons on the acceleration phase of the excited plasma wave potential. So that we have tried to emit electrons from a laser triggered photocathode. The laser will easily control the emission timing of the electrons, so as to put them on any phase of the wave potential. We have developed sequentially two electron sources, the first one without the laser photocathode and the second one with it.
In the first year (1995), we have modified the Marx generator for the CO_2 laser electron gun to provide 1MeV electron beams. By controlling the cathode impedance, we have obtained more than 1MeV electron beams. Also we have for the first time calibrated a 20MeV electron spectrometer (ESM) by using the 20 MeV linear accelerator.
In the second year (1996), we have developed the electron gun with a laser triggered photocathode. The Pulse power machine is a coaxial Marx generator and the maximum charging is 1 MV.We have obtained 1MeV electrons. Now we are providing to trigger the photo diode by using a YAG laser second harmonic pulse.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] 北川米喜: "Thexson seattering meawrement of the beat-wave encitel relatiristec plasma waves" Prereedings of Laser interaction and delated plasma pheuomena (AIP pren). CP369. 690-694 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 北川米喜: "SAR measurement of inploded ceyogenic foam target by D-D-protons" Prereedings of Laser interaction and delated plasma phenomena (AIP pren). CP369. 136-143 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 加藤義章: "Opproaclees to fast ignition inertial confinement fusion to IEL, Osaka" Prereedings of Hu 16th IAEA Fushion Energy Conferend. (発表予定). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 三間圀興: "Recent pregress of laser fusion research with Gekko lasers at ILE, Osaka" Prereedings of Hu 16th IAEA Fushion Energy Conferend. (発表予定). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 北川米喜: "原子力と先端技術[III]第2部第2章レーザー加速とその応用" 原子力システム研究会懇話会, 191 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 北川米喜: "光量子科学の誕生と未来像第7章2. 2." 光量子の高度利用に関する懇話会, 493 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 北川米喜: "Thomson scattering measurement of the beat-wave excited relativistic plasma waves" Preceedings of Laser interaction and related plasma phenosena (AIP press). CP369. 690-694 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 北川米喜: "P&R measurement of imploded cryogenic foamtarget by DD-protons" Preceedings of Laser interaction and related plasma phenosena (AIP press). CP369. 136-143 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 加藤義章: "Approaches to fast ignition in inertial confinement fusion at ILE,Osaka" Proceedings of the 16th IAEA Fusion Energy Conference. (発表予定). IAEA-CN-64/82-6 (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 三間圀興: "Recent pregress of laser fusion research with Gekko lasers at ILE,Osaka" Proceedings of the 16th IAEA Fusion Energy Conference. (発表予定). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 北川米喜: "原子力と先端技術[III]第2部第2章レーザー加速とその応用" 原子力システム研究会懇話会, 191 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 北川米喜: "光量子科学の誕生と未来像第7章2.2" 光量子の高度利用に関する懇談会, 493 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 田中和夫: "Cryogenic deaterium target experiments with the GEKKO XII,green laser system" Physics of Plasmas. 2(June). (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 中島和久: "Observation of Ultrahigh gradient Electron Acceleration by a Self-Modudlated Intense Short Laser Pulse" Physical Review Letters. 74. 4428-4431 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 北川米喜: "Oreal density measurement of compressed cryoginic target by DD protons" Physical Review Letters. 75. 3130-3133 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 北川米喜: "高強度・レーザーによる粒子加速と高速点火実験計画" プラズマ応用と複合機能材料. 5. 87-90 (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 北川米喜: "PUR Measurement Imploded Cryogenic Foam Target by DD protons" Proc.AIP. CP369. 136-143 (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 北川米喜: "Energy from Inestial Fusion:43章(Hogan編)" IAEA,W.J., 457 (1995)

    • Related Report
      1995 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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