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《中国物理C》(英文)编辑部
2024年10月30日

Some Studies on Increasing the Luminosity of BEPCⅡ

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SUN Yi-Peng and GAO Jie. Some Studies on Increasing the Luminosity of BEPCⅡ[J]. Chinese Physics C, 2007, 31(2): 189-193.
SUN Yi-Peng and GAO Jie. Some Studies on Increasing the Luminosity of BEPCⅡ[J]. Chinese Physics C, 2007, 31(2): 189-193. shu
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Received: 2006-06-21
Revised: 2006-07-14
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Some Studies on Increasing the Luminosity of BEPCⅡ

    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

Abstract: BEPCⅡ, the upgrading project of the Beijing Electron-Positron Collider (BEPC), has been designed with a luminosity of 1033cm-2.s-1 at the τ-charm energy region. According to the beam-beam simulation results, the luminosity of BEPCⅡ~with a crossing collision angle of 11mrad is about 0.50×1033cm-2.s-1 with the original operation mode at the working point of 6.53/5.58. To increase the operating luminosity of the BEPCⅡ, a low momentum compaction factor (αP) collision mode has been studied which can increase the luminosity to 0.54×1033cm-2.s-1. If the bunch length of the low αP mode is reduced from 1.5cm to 1.2cm, a mode with vertical beta function at IP equal to 1.2cm could push the luminosity to 0.828×1033cm-2.s-1 at the working points 6.53/5.56.

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