Production of High Density Polarized Electron Beam from GaAs-GaAsP Superlattice Photocathode

Journal Article · Wed Jun 13 00:00:00 EDT 2007 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2750947· OSTI ID:21061852

Yamamoto, M; Yamamoto, N; Okumi, S; Sakai, R; Kuwahara, M; Morino, T; Tamagaki, K; Mano, A; Utsu, A; Nakanishi, T ^[1]; Bo, C; Ujihara, T; Takeda, Y ^[2]; Kuriki, M ^[3]

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1. Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8602 (Japan)
2. Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603 (Japan)
3. High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki, 305-0801 (Japan)

Future high energy accelerators require polarized electron sources that can generate high bunch charge and/or high density electron beam with low emittance. Various superlattice photocathodes and a high voltage load-lock DC gun have been developed at Nagoya University for this purpose. Using a GaAs-GaAsP strained superlattice photocathode, the bunch charge of 8nC was extracted in a 1.6ns bunch with a 20 mm diameter, and that of 3.3pC in {approx}30ps bunch with 1.2mm diameter.

• OSTI ID: 21061852
• Journal Information: AIP Conference Proceedings, Vol. 915, Issue 1; Conference: 17. international spin physics symposium, Kyoto (Japan), 2-7 Oct 2006; Other Information: DOI: 10.1063/1.2750947; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM BUNCHING
BEAM EXTRACTION
DENSITY
ELECTRIC POTENTIAL
ELECTRON BEAMS
ELECTRON DENSITY
ELECTRON GUNS
ELECTRON SOURCES
GALLIUM ARSENIDES
PHOTOCATHODES
POLARIZATION
SEMICONDUCTOR DEVICES
SEMICONDUCTOR MATERIALS
SUPERLATTICES