Basic study of low emittance DC electron gun

2009 Fiscal Year Final Research Report

• Project/Area Number: 20740129
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Nagoya University
• Principal Investigator: YAMAMOTO Masahiro Nagoya University, 加速器研究施設, 助教 (00377962)
• Project Period (FY): 2008 – 2009
• Keywords: 低エミッタンス電子源 / 電界放出暗電流 / 超高真空

Research Abstract

A basic study of an high brightness electron source for Energy Recovery Linac (ERL) was done by using a 200kV electron gun ; A high bunch charge of 28 pC was generated within 25 ps bunch duration ; An operational-lifetime for 120 hours with extraction beam current of 50 μA was observed under extreme high vacuum condition of 2E-10 Pa ; A HV-conditioning was performed and the breakdown voltage grew by 0.4 kV per discharge above 200 kV without significant damage of electrode.

Research Products

• [Journal Article] High-voltage testing of a 500-kV dc photocathode electron gun (2010)
  • Author(s): R. Nagai, M. Yamamoto(5番目), 他10名
  • Journal Title: Review of Scientific Instruments 033304 Pages: 5
  • Peer Reviewed
• [Journal Article] KEKにおけるERL放射光源用500kV電子銃の開発計画 (2009)
  • Author(s): 山本将博, 他27名
  • Journal Title: 第6回日本加速器学会Proceedings Pages: 860-862
• [Journal Article] DC gun technological challenges (2009)
  • Author(s): N. Nishimori, M. Yamamoto(9番目), 他7名
  • Journal Title: Proceedings of the ERL09
• [Journal Article] ERL-09(ICFA Beam Dynamics Workshop)の会議報告 (2009)
  • Author(s): 山本将博, 他2名
  • Journal Title: 加速器 Pages: 256-258
• [Journal Article] Status of 200-keV beam operations at Nagoya University (2009)
  • Author(s): M. Yamamoto, 他14名
  • Journal Title: Workshop on Source of Polarized Electrons and High Brightness Electron Beams
• [Journal Article] 200keV偏極電子源50μA試験運転報告 (2008)
  • Author(s): 山本将博, 他14名
  • Journal Title: 第5回加速器学会Proceedings Pages: 957-959
• [Journal Article] NEA-GaAs型フォトカソードより生成した高密度パルス電子ビームのエミッタンス測定系の構築 (2008)
  • Author(s): 山本将博, 他14名
  • Journal Title: 第5回日本加速器学会Proceedings Pages: 957-959
• [Presentation] Polarized electron update in Japan (2010)
  • Author(s): M. Yamamoto, 他29名
  • Organizer: International Linear Collider Workshop 2010 (LCWS2010)
  • Place of Presentation: 中国北京
  • Year and Date: 2010-03-27
• [Presentation] ERL用電子銃 (2010)
  • Author(s): 山本将博, 他11名
  • Organizer: 第27回PFシンポジウム
  • Place of Presentation: 茨城県つくば市
  • Year and Date: 2010-03-09
• [Presentation] 500kV Gun development at KEK (2010)
  • Author(s): T. Miyajima, M. Yamamoto(2番目), 他20名
  • Organizer: 48th ICFA Advanced Beam Dynamics Workshop on Future Light Sources (FLS2010)
  • Place of Presentation: SLAC National Accelerator Laboratory, Menlo Park, CA, USA
  • Year and Date: 2010-03-02
• [Presentation] KEKにおけるERL放射光源用500kV電子銃の開発計画 (2009)
  • Author(s): 山本将博, 他27名
  • Organizer: 第6回日本加速器学会
  • Place of Presentation: 茨城県東海村・日本原子力機構
  • Year and Date: 2009-08-06
• [Presentation] Vacuum and Field Emission from Electrodes (2009)
  • Author(s): M. Yamamoto
  • Organizer: ERL09
  • Place of Presentation: Cornell University, Ithaca, NY, USA
  • Year and Date: 2009-06-10
• [Presentation] Status of 200-keV beam operations at Nagoya University (2008)
  • Author(s): M. Yamamoto, 他14名
  • Organizer: Workshop on Source of Polarized Electrons and High Brightness Electron Beams
  • Place of Presentation: CEBAF Center Jefferson Lab. (Newport News, VA, USA)
  • Year and Date: 2008-10-01
• [Presentation] 200keV偏極電子源50μA試験運転報告 (2008)
  • Author(s): 山本将博, 他14名
  • Organizer: 第5回加速器学会
  • Place of Presentation: 東広島市中央公民館
  • Year and Date: 2008-08-08
• [Presentation] NEA-GaAs型フォトカソードより生成した高密度パルス電子ビームのエミッタンス測定系の構築 (2008)
  • Author(s): 山本将博, 他14名
  • Organizer: 第5回日本加速器学会
  • Place of Presentation: 東広島市中央公民館
  • Year and Date: 2008-08-07