Study of Long Range Beam-Beam Effects

Wang Lanfa; Zhang Chuang; Wang Shuhong; Guo Zhiyuan; Lin Yuzheng; Tong Dechun

Chinese Physics C> 1999, Vol. 23> Issue(1) : 72-78

Study of Long Range Beam-Beam Effects

Institute of High Engineering Physics, CAS, Beijing 1000391 Department of Engineering Physics, Tsinghua University, Beijing 100084

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Abstract：
The operation of colliders are often limited by the nonlinear effects of beam-beam interaction, especially for the strong current machines, such as BEPCⅡ (BEPC multibunch collision scheme). The beam-beam interaction in BEPCⅡ is very complicated. The bunch will collide with another bunch head on at the south interaction point and interact with another bunches due to the long distance beam-beam force at other eleven points along the ring. This paper has studied the tune shift and tune spread due to the long distance beam-beam interaction effects. The long distance beam-beam effects of BEPCⅡ injection mode have also been studied.

References

[1]

Wang Lanfa.Study of Multibunch collision Scheme in BEPC, Master thesis, IHEP(王兰法.BEPC多束团对撞提高亮度的研究,硕士论文,中国科学院高能物理研究所) 2 Wang Lanfa.BEPC Multibunch collision and Coupled Bunch Instabilities,PH. D.thesis,IHEP(王兰法.BEPC多束团对撞与耦合束不稳定性,博士论文,中国科学院高能物理研究所) 3 Kohji HIRTATA. A Symlectic Beam–Beam Interaction with Ehergy Change, KEK Preprint 92—117

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Wang Lanfa, Zhang Chuang, Wang Shuhong, Guo Zhiyuan, Lin Yuzheng and Tong Dechun. Study of Long Range Beam-Beam Effects[J]. Chinese Physics C, 1999, 23(1): 72-78.

Wang Lanfa, Zhang Chuang, Wang Shuhong, Guo Zhiyuan, Lin Yuzheng and Tong Dechun. Study of Long Range Beam-Beam Effects[J]. Chinese Physics C, 1999, 23(1): 72-78. shu

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Received: 1998-01-09
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

Study of Long Range Beam-Beam Effects

Corresponding author: Wang Lanfa,

Institute of High Engineering Physics, CAS, Beijing 1000391 Department of Engineering Physics, Tsinghua University, Beijing 100084

Received Date: 1998-01-09
Accepted Date: 1900-01-01
Available Online: 1999-01-05

Abstract: The operation of colliders are often limited by the nonlinear effects of beam-beam interaction, especially for the strong current machines, such as BEPCⅡ (BEPC multibunch collision scheme). The beam-beam interaction in BEPCⅡ is very complicated. The bunch will collide with another bunch head on at the south interaction point and interact with another bunches due to the long distance beam-beam force at other eleven points along the ring. This paper has studied the tune shift and tune spread due to the long distance beam-beam interaction effects. The long distance beam-beam effects of BEPCⅡ injection mode have also been studied.