Development of a 500-kv photo-cathode dc gun for erl light sources

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

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

Energy recovery linac (ERL) based next generation light sources require high brightness electron gun. We have developed a 500-kV, 10-mA photocathode DC gun. A segmented ceramic insulator with guard rings is employed to improve robustness at high voltage operation by keeping field emission electrons away from the ceramic surface. We have recently succeeded in applying 500 kV on the ceramics for eight hours without any discharge. This high voltage testing was performed with a simple configuration without NEG pumps, cathode and anode electrodes to mainly study the field emission from a tube supporting the cathode electrode. The same high voltage testing with a full configuration necessary for beam generation was carried out up to 380 kV. Up-to-date status of our gun development will be presented in detail.

Original languageEnglish
Pages995-997
Number of pages3
Publication statusPublished - 2011 Dec 1
Event25th International Linear Accelerator Conference, LINAC 2010 - Tsukuba, Ibaraki, Japan
Duration: 2010 Sep 122010 Sep 17

Other

Other25th International Linear Accelerator Conference, LINAC 2010
CountryJapan
CityTsukuba, Ibaraki
Period10/9/1210/9/17

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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    Nishimori, N., Nagai, R., Hajima, R., Yamamoto, M., Honda, Y., Miyajima, T., Muto, T., Iijima, H., Kuriki, M., Kuwahara, M., Okumi, S., & Nakanishi, T. (2011). Development of a 500-kv photo-cathode dc gun for erl light sources. 995-997. Paper presented at 25th International Linear Accelerator Conference, LINAC 2010, Tsukuba, Ibaraki, Japan.