Monte Carlo Simulation of the BEPCⅡ/BEPCⅢ Backgrounds——Touschek Effects

JIN Da-Peng; GUO Ya-Nan; WANG Yi-Fang; WU Ling-Hui; LIU Zhen-An; ZHAO Di-Xin; YU Zhong-Qiang

Chinese Physics C> 2006, Vol. 30> Issue(5) : 449-453

Monte Carlo Simulation of the BEPCⅡ/BEPCⅢ Backgrounds——Touschek Effects

Institute of High Energy Physics, CAS, Beijing 100049, China2 Graduate School, CAS, Beijing 100049, China

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Abstract：
Motivation of the Touschek backgrounds study is introduced. Also introduced are the theory and modeling methods of the Touschek effect. The Touschek backgrounds of the main detectors of the BESⅢ are studied in detail using the self-reprogrammed general simulation tools. Comparison of the beam lifetime between the simulated and calculated ones shows that the simulations are reasonable and the results are meaningful. Results of the detectors' backgrounds show that the Touschek backgrounds won't affect the normal run of the future BESⅢ and won't damage the main detectors.

References

[1]

. Preliminary Design Report of BEPCⅡ. Linac:IHEP-BEPC/-SB-03-2; Storage Ring: IHEP-BEPCⅡ-SB-03-3.2003. (in Chinese)(北京正负电f对撞机重大改造上程BEPC II初步设计.直线加速器:IHEP-BEPC II-SB-03-2:储存环:IHEP-BEPC II-S B-03-3). 2003x2. Preliminary Design Report of the BES0 Detector: IHEP-BEPCⅡ-SB-13. 20043. Le Du J. Single and Multiple Touschek E ects. CERN,1995. 573-5864. JIN Da-Peng et al. HEP NP, 2004, 28(11): 1197-1202(in Chinese)(金大鹏等.高能物理与核物理,2004, 28(11): 1197-1202)5. ZHOU Neng-Feng et al. HEP NP, 2004, 28(3): 227-231(in Chinese)(周能峰等.高能物理与核物理,2004, 28(3): 227-231)6. Carey D C, Brown K L, Iselin F C. Decay TURTLE(Trace Unlimited Rays Through Lumped Elements). SLAC-246.1980. A Modi ed Version Taking into Account the Beam-gas Bremsstrahlung and Coulomb Scattering was Providedby Kozanecki W7. GEANT Detector Description Tool(Version 3.21). CERN Program Library W5103, CERN, 1994

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JIN Da-Peng, GUO Ya-Nan, WANG Yi-Fang, WU Ling-Hui, LIU Zhen-An, ZHAO Di-Xin and YU Zhong-Qiang. Monte Carlo Simulation of the BEPCⅡ/BEPCⅢ Backgrounds——Touschek Effects[J]. Chinese Physics C, 2006, 30(5): 449-453.

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Received: 2005-08-03
Revised: 2005-12-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Monte Carlo Simulation of the BEPCⅡ/BEPCⅢ Backgrounds——Touschek Effects

Corresponding author: JIN Da-Peng,

Institute of High Energy Physics, CAS, Beijing 100049, China2 Graduate School, CAS, Beijing 100049, China

Received Date: 2005-08-03
Accepted Date: 2005-12-01
Available Online: 2006-05-05

Abstract: Motivation of the Touschek backgrounds study is introduced. Also introduced are the theory and modeling methods of the Touschek effect. The Touschek backgrounds of the main detectors of the BESⅢ are studied in detail using the self-reprogrammed general simulation tools. Comparison of the beam lifetime between the simulated and calculated ones shows that the simulations are reasonable and the results are meaningful. Results of the detectors' backgrounds show that the Touschek backgrounds won't affect the normal run of the future BESⅢ and won't damage the main detectors.