Minimization of Primary Electron Beam Radius at the Positron Production Target

WANG Shu-Hong; WANG Jiu-Qing; YE Qiang; LE Qi

Chinese Physics C> 2002, Vol. 26> Issue(12) : 1302-1308

Minimization of Primary Electron Beam Radius at the Positron Production Target

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

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Abstract：
To have a high positron yield,it is extremely important to minimize the primary electron beam radius at the positron production target. Various effects on electron beam blow-up have been analyzed.By comparing the measured beam radius with simulation,result at current BEPC positron source,some concrete effects on beam blow-up have been described. A design study on minimizing the electron beam radius at BEPC-Ⅱ positron source is given,and the ways to reach this goal have been summarized.

References

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. Ecklund S.Handbook of Accelerator Physics and Engineering.Edited by A .W .Chao and M .Tigner,World Scientific,1999.430 2. Seeman J T ,Decker F J.SLAC PUB 5705,August,19923. Balakin V ,Novokhatsky S ,Smirnov V .Proc.12th Int.Conf.On High EnergyAcc.,1983 4. Kamitani T ,Wang J Q ,WANG S H .KEK Report20004,20005. WAN G S H ,Y E Q ,CAO J S et al.High Energy Phys.and Nucl.Phys.,2002,26:1184(in Chinese)(王书鸿,叶强,曹建社等.高能物理与核物理,2002,26:1184)6. Assmann R et al.LIAR A Computer Program for the Modeling and Simulation of High Performance Linacs.SLAC AP 103,April1997 7. GOU WeiPing.Physical Design of BEPCⅡPositron Source.Master Thesis,IHEP ,2001(in Chinese)(苟卫平.BEPCⅡ正电子源物理设计.硕士论文,中国科学院高能物理研究所,2001)

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WANG Shu-Hong, WANG Jiu-Qing, YE Qiang and LE Qi. Minimization of Primary Electron Beam Radius at the Positron Production Target[J]. Chinese Physics C, 2002, 26(12): 1302-1308.

WANG Shu-Hong, WANG Jiu-Qing, YE Qiang and LE Qi. Minimization of Primary Electron Beam Radius at the Positron Production Target[J]. Chinese Physics C, 2002, 26(12): 1302-1308. shu

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Received: 2002-02-05
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

Minimization of Primary Electron Beam Radius at the Positron Production Target

Corresponding author: WANG Shu-Hong,

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

Received Date: 2002-02-05
Accepted Date: 1900-01-01
Available Online: 2002-12-05

Abstract: To have a high positron yield,it is extremely important to minimize the primary electron beam radius at the positron production target. Various effects on electron beam blow-up have been analyzed.By comparing the measured beam radius with simulation,result at current BEPC positron source,some concrete effects on beam blow-up have been described. A design study on minimizing the electron beam radius at BEPC-Ⅱ positron source is given,and the ways to reach this goal have been summarized.