A compact low emittance DC gun employing single crystal cathode of LaB 6

K. Kasamsook, K. Nanbu, M. Kawai, K. Akiyama, F. Hinode, T. Muto, T. Tanaka, M. Yasuda, H. Hama

Research output: Contribution to conferencePaperpeer-review

7 Citations (Scopus)

Abstract

Development of an electron gun capable of producing low emittance is in the interests of further applications of high brightness electron beam such as Smith-Purcell FEL [1] for example. A prominent point of this DC gun is that operation high voltage is very low (50 kV). Since a higher beam current of the macropulse is required in general, a cathode should have higher current density, while the smaller size of the cathode is preferred for lower emittance. Consequently we have chosen single crystal LaB6 as the cathode, which can provide higher current with good homogeneity emission. Some numerical calculations have also been performed. There are some good agreement in calculated results between them. Numerical calculations show a normalized rms emittance is expected to be less than 5 π mm mrad. A state-of-the-art electron source will possibly open new scientific opportunities in the many fields.

Original languageEnglish
Pages680-683
Number of pages4
Publication statusPublished - 2006
Event28th International Free Electron Laser Conference, FEL 2006 - Berlin, Germany
Duration: 2006 Aug 272006 Sep 1

Other

Other28th International Free Electron Laser Conference, FEL 2006
Country/TerritoryGermany
CityBerlin
Period06/8/2706/9/1

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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