Chinese Physics C > 2004, Vol. 28 > Issue(6): 653-658

Wakefield Effects on the BEPCII Injector Linac

Institute of High Energy Physics,CAS,Beijing 100039,China

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Abstract：
The high current and short bunch of the electron beam in the BEPCII injector linac cause the wakefield effects on the beam performance dilution. These wakefield effects on longitudinal and transverse beam dynamics are systematically studied with analysis and numerical beam modeling, including the single bunch short-range wake effects and the multi-bunch long-range wake effects on beam energy, energy spread, emittance, orbit offset and primary electron beam spot size on the positron production target. The measures to effectively cure these wake effects are also studied.

References

[1]

. BEPCII Injector Linac Design Report , BEPCII-Report/20022032.　Assmann R et al . LIAR-A Computer Program for the Modeling and Simulation of High Performance Linacs , SLAC/AP-103 , 19973.　GOU Wei-Ping , PEI Guo-Xi . Physical Design of BEPCII Positron Source. Master thesis , 2001 (in Chinese)(苟卫平,裴国玺. BEPCII 正电子源物理设计. 中国科学院硕士学位论文,2001)4.　WANG Shu-Hong , WANG Jiu-Qing , YE Qiang et al . High Energy Phys. and Nucl . Phys. , 2002 , 26(12) : 1302 (in Chinese)(王书鸿,王九庆,叶强等. 高能物理与核物理,2002 , 26 (12) :1302)5.　Chao A. Physics of Collective Beam Instabilities in High Energy Accelerators. New York : Wiley Interscience , 19936.　Thompson K, Yokoya K. Collective Effects in High Energy ElectronLinacs. In : Chao A W, Tigner Med. Handbook of Accelerator Physicsand Engineering. Singapore : World Scientific , 19987.　WANG Shu-Hong et al . High Energy Phys. and Nucl . Phys. , 2003 ,27 (2) : 173 (in Chinese)(王书鸿等. 高能物理与核物理,2003 ,27 (2) :173)8.　WANG Shu-Hong , GU Peng-Da , LIU Wei-Bin et al . Summary of the Beam Modeling for BEPCII Injector Linac , BEPCII Internal Report ,BEPCII-URAP-NB/2003208

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WANG Shu-Hong, GU Peng-Da, LIU Wei-Bin, PEI Shi-Lun and ZHOU Zu-Sheng. Wakefield Effects on the BEPCII Injector Linac[J]. Chinese Physics C, 2004, 28(6): 653-658.

WANG Shu-Hong, GU Peng-Da, LIU Wei-Bin, PEI Shi-Lun and ZHOU Zu-Sheng. Wakefield Effects on the BEPCII Injector Linac[J]. Chinese Physics C, 2004, 28(6): 653-658. shu

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Received: 2003-11-07
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

Wakefield Effects on the BEPCII Injector Linac

Corresponding author:WANG Shu-Hong,

Institute of High Energy Physics,CAS,Beijing 100039,China

Received Date:2003-11-07
Accepted Date:1900-01-01
Available Online:2004-06-05

Abstract:The high current and short bunch of the electron beam in the BEPCII injector linac cause the wakefield effects on the beam performance dilution. These wakefield effects on longitudinal and transverse beam dynamics are systematically studied with analysis and numerical beam modeling, including the single bunch short-range wake effects and the multi-bunch long-range wake effects on beam energy, energy spread, emittance, orbit offset and primary electron beam spot size on the positron production target. The measures to effectively cure these wake effects are also studied.