Status of 200 keV Beam Operations at Nagoya University

Journal Article · Tue Aug 04 00:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3215802· OSTI ID:21344484

Yamamoto, M; Konomi, T; Okumi, S; Nakagawa, Y; Nakanishi, T ^[1]; Yamamoto, N; Tanioku, M; Jin, X; Ujihara, T; Takeda, Y ^[2]; Furuta, F; Matsumoto, H; Yoshioka, M ^[3]; Kuriki, M; Shonaka, C ^[4]

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1. Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8602 (Japan)
2. Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8603 (Japan)
3. High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki, 305-0801 (Japan)
4. Graduate School of Advanced Sciences of Matter, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8530 (Japan)

We have developed a 200 keV polarized electron source for generating high bunch charge of >3.2 nC within approx1 ns bunch duration for the International Linear Collider (ILC) and >7.7 pC within 30 ps bunch duration for a basic source study of an Energy Recovery Linac (ERL). In order to improve gun operation voltage and an operational lifetime, we have employed new electrode materials of molybdenum and titanium to eliminate field emission dark current, and restructured a beam transport vacuum systems. As a beam generation for the ERL, bunch charge of up to 28 pC was generated by irradiating with sliced laser pulse trains. The details are described in this report.

• OSTI ID: 21344484
• Journal Information: AIP Conference Proceedings, Vol. 1149, Issue 1; Conference: SPIN 2008: 18. International Spin Physics Symposium, Charlottesville, VA (United States), 6-11 Oct 2008; Other Information: DOI: 10.1063/1.3215802; (c) 2009 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM BUNCHING
BEAM PRODUCTION
BEAM TRANSPORT
ELECTRON GUNS
ELECTRON SOURCES
FIELD EMISSION
KEV RANGE
LASER RADIATION
LINEAR COLLIDERS
MOLYBDENUM
PHOTOCATHODES
POLARIZATION
PULSED IRRADIATION
TITANIUM
VACUUM SYSTEMS
ACCELERATORS
BEAM DYNAMICS
CATHODES
DYNAMICS
ELECTRODES
ELECTROMAGNETIC RADIATION
ELEMENTS
EMISSION
ENERGY RANGE
IRRADIATION
LINEAR ACCELERATORS
MECHANICS
METALS
PARTICLE SOURCES
RADIATION SOURCES
RADIATIONS
REFRACTORY METALS
TRANSITION ELEMENTS