Development of an electron gun for an ERL based light source in Japan

N. Nishimori, R. Nagai, H. Iijima, Y. Honda, T. Muto, M. Kuriki, M. Yamamoto, S. Okumi, T. Nakanishi, R. Hajima

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Citations (Scopus)


We have developed a prototype DC photoemission electron gun for a future energy recovery linac (ERL) based light source in Japan. The prototype gun is operated at up to 250 kV and is designed to deliver up to 50 mA beam current. A diagnostic beam line for emittance and bunch length measurements has been constructed. We have also designed a new 500 kV DC gun which is capable of producing up to 10 mA electron current with emittance lower than 1 mm-mrad. The high voltage terminal will be isolated by ten ceramics stacked in series. The new gun will satisfy performance required as an injector for the compact ERL, which will be constructed at KEK site as a prototype of the future ERL light source.

Original languageEnglish
Title of host publicationSpin Physics
Subtitle of host publication18th International Spin Physics Symposium
EditorsXiaochao Zheng, Yelena Prok, Matt Poelker, Donald G. Crabb, Simonetta Liuti, Donal B. Day
PublisherAmerican Institute of Physics Inc.
Number of pages5
ISBN (Print)9780735406865
Publication statusPublished - 2009 Aug 4
Event18th International Spin Physics Symposium 2008 - Charlottesville, United States
Duration: 2008 Oct 62008 Oct 11

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


Conference18th International Spin Physics Symposium 2008
Country/TerritoryUnited States


  • ERL
  • High brightness electron beam
  • Photoinjector


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