Development of a 500-KV photo-cathodedc gun for the erl light sources in Japan

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

Research output: Contribution to conferencePaper

4 Citations (Scopus)

Abstract

Energy recovery linac (ERL) based next generation light source such as X-ray FEL requires high brightness electron gun. We have developed a 500-kV, 10-mA photocath-ode DC gun. A segmented ceramic insulator with guard rings is employed to improve stability and robustness at high voltage operation by keeping field emission electrons away from the ceramic surface. A Cockcroft-Walton power supply and the insulator are installed in a SF6 tank and high voltage test up to 550kV was successfully done without a metal rod which supports a cathode electrode. All the vacuum chambers are made of chemically polished titanium alloy with very low out-gassing. A GaAs photocathode is activated in a separate preparation system. Up-to-date status of the gun development will be presented in detail.

Original languageEnglish
Pages277-280
Number of pages4
Publication statusPublished - 2009 Dec 1
Event31st International Free Electron Laser Conference, FEL 2009 - Liverpool, United Kingdom
Duration: 2009 Aug 232009 Aug 28

Other

Other31st International Free Electron Laser Conference, FEL 2009
CountryUnited Kingdom
CityLiverpool
Period09/8/2309/8/28

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Nishimori, N., Nagai, R., Iijima, H., Hajima, R., Yamamoto, M., Muto, T., Honda, Y., Miyajima, T., Kuriki, M., Kuwahara, M., Okumi, S., & Nakanishi, T. (2009). Development of a 500-KV photo-cathodedc gun for the erl light sources in Japan. 277-280. Paper presented at 31st International Free Electron Laser Conference, FEL 2009, Liverpool, United Kingdom.