BEPCⅡ Linac Upgrade and Beam Commissioning

WANG Shu-Hong; PEI Guo-Xi; SUN Yao-Lin; CHI Yun-Long; CHEN Yan-Wei; CAO Jian-She; KONG Xiang-Cheng; ZHAO Feng-Li; HOU Mi; DENG Bing-Lin

Chinese Physics C> 2006, Vol. 30> Issue(S1) : 150-152

BEPCⅡ Linac Upgrade and Beam Commissioning

Institute of High Energy Physics, CAS, Beijing 100049, China

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Abstract：
The BEPCⅡ injector linac upgrade aims at having higher beam energy with smaller beam emittance and energy spread to meet the colliding luminosity upgrade by two orders of magnitudes higher. It is a great challenge to various systems and the beam physics for this injector linac. This paper describes the constructions of the new electron gun, the new positron source, the new RF power supply, the new phasing system and the upgraded beam instrumentation, which are immediately affected on the beam performance. The beam physics with high current and small emittance and energy spread are systematically studied. The preliminary beam commissioning results and the further machine improvement plans are presented.

References

[1]	. PEI Guo-Xi, WANG Shu-Hong, CHI Yun-Long et al. Con-cept Design of the BEPC/Injector Linac, IHEP-BEPC/-SB-03-2, IHEP, November 2003(in Chinese)(裴国玺，王书鸿，池云龙等.BEPC II直线加速器初步设计，IHEP-BEPC II-SB-03-2，中国科学院高能物理研究所，2003年11月)

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WANG Shu-Hong, PEI Guo-Xi, SUN Yao-Lin, CHI Yun-Long, CHEN Yan-Wei, CAO Jian-She, KONG Xiang-Cheng, ZHAO Feng-Li, HOU Mi and DENG Bing-Lin. BEPCⅡ Linac Upgrade and Beam Commissioning[J]. Chinese Physics C, 2006, 30(S1): 150-152.

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Received: 2005-12-07
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

BEPCⅡ Linac Upgrade and Beam Commissioning

Corresponding author: WANG Shu-Hong,

Institute of High Energy Physics, CAS, Beijing 100049, China

Received Date: 2005-12-07
Accepted Date: 1900-01-01
Available Online: 2006-01-04

Abstract: The BEPCⅡ injector linac upgrade aims at having higher beam energy with smaller beam emittance and energy spread to meet the colliding luminosity upgrade by two orders of magnitudes higher. It is a great challenge to various systems and the beam physics for this injector linac. This paper describes the constructions of the new electron gun, the new positron source, the new RF power supply, the new phasing system and the upgraded beam instrumentation, which are immediately affected on the beam performance. The beam physics with high current and small emittance and energy spread are systematically studied. The preliminary beam commissioning results and the further machine improvement plans are presented.