Low αP Mode Study of the BEPCⅡ

SUN Yi-Peng; GAO Jie

Chinese Physics C> 2006, Vol. 30> Issue(S1) : 135-137

Low αP Mode Study of the BEPCⅡ

SUN Yi-Peng ^, ,
GAO Jie

Institute of High Energy Physics, CAS, Beijing 100049, China2 Key Laboratory of Heavy Ion Physics, Ministry of Education & School of Physics, Peking University, Beijing 100871, China

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Abstract：
BEPCⅡ, the upgrading project of the Beijing Electron-Positron Collider (BEPC), has been designed with a luminosity of 10³³cm^－2s^－1 at the t-charm energy regime. To increase the operating luminosity of the BEPCⅡ, a low momentum compaction factor collision mode has been studied. At the same time, the dynamic aperture of this mode has been calculated since it may not be enough as a result of the sextupole strength increasing. The corresponding luminosity of this mode is calculated through beam-beam simulations.

References

[1]	. Design Report of BEPCII (Accelerator Part), unpublished,20032. Grote H, Iselin C. The MAD Program, CERN/SL/90-13(AP)3. http: //acc-physics. kek. jp/SAD/example/design example.HTML4. YUAN Zhang et al. Phys. Rev. ST Accel. Beams, 2005, 8:074402

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[2]	SUN Yi-Peng , GAO Jie . Some Studies on Increasing the Luminosity of BEPCⅡ. Chinese Physics C, 2007, 31(2): 189-193.
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[17]	DAI Jian-Ping , CHAI Xue-Dong , ZHAO Zhen-Tang . Shunt Impedance and Power of the BEPC DC Separator. Chinese Physics C, 2001, 25(7): 680-683.
[18]	Wang Jiuqing , Fang Shouxian . Application of the Negahve Momentum CompactionLattice in a Tau-Charm Factory. Chinese Physics C, 1999, 23(4): 388-396.
[19]	Wang Jiuqing , Fang Shouxian . Research to the Design of a Lattice for a Collider With Negative Momentum Compaction Factor. Chinese Physics C, 1998, 22(12): 1156-1163.
[20]	Deng Jingkang , Shang Rencheng , Zhu Shengjiang , Xu Wang , Zhang Juping , Jin Qingzhen , Zhu Henian , Xia Shaojian , Yan Yonglian , Guo Yanan . Study on Polarization of BEPC Beam and a Polarimeter. Chinese Physics C, 1997, 21(6): 562-570.

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SUN Yi-Peng and GAO Jie. Low αP Mode Study of the BEPCⅡ[J]. Chinese Physics C, 2006, 30(S1): 135-137.

SUN Yi-Peng and GAO Jie. Low αP Mode Study of the BEPCⅡ[J]. Chinese Physics C, 2006, 30(S1): 135-137. shu

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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

Low αP Mode Study of the BEPCⅡ

SUN Yi-Peng ^,
GAO Jie

Corresponding author: SUN Yi-Peng,

Institute of High Energy Physics, CAS, Beijing 100049, China2 Key Laboratory of Heavy Ion Physics, Ministry of Education & School of Physics, Peking University, Beijing 100871, China

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

Abstract: BEPCⅡ, the upgrading project of the Beijing Electron-Positron Collider (BEPC), has been designed with a luminosity of 10³³cm^－2s^－1 at the t-charm energy regime. To increase the operating luminosity of the BEPCⅡ, a low momentum compaction factor collision mode has been studied. At the same time, the dynamic aperture of this mode has been calculated since it may not be enough as a result of the sextupole strength increasing. The corresponding luminosity of this mode is calculated through beam-beam simulations.