Optimization in the Design of BESⅢ CsI Crystal Calorimeter

LIU Chun-Xiu; FU Cheng-Dong; ZHOU Li; ZHANG Qin-Jian; XIA Xiao-Mi; LAI Yuan-Fen; LI Jin; FANG Jian; CHEN Yuan; CAI Xiao; SHANG Lei; WANG Man; LU Jun-Guang; WANG Yi-Fang

Chinese Physics C> 2003, Vol. 27> Issue(12) : 1114-1118

Optimization in the Design of BESⅢ CsI Crystal Calorimeter

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

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Abstract：
In the process of design and research of BESⅢ crystal calorimeter we study its performance by Monte Carlo simulation and then optimize the scheme. Those results show that the the following scheme is optimized. CsI crystals typically have a front face of about 5×5cm² and a rear face of about 6.5×6.5cm², and the length of all crystals is 28cm. The crystals are supported by four iron screws fixed at the rear end. All crystals point to the collision point with a small tilt of 1°—3° in the θand 1.5° in theφ. Then we obtain that the energy resolution is about 2.1% and the position resolution about 6mm for 1GeV photon.

References

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. BAI Jing-Zhi et al.Nucl.Instr.and Methods,1994,A344:3192. LIU CX et al.Monte Carlo Study of Performance of BESⅢCsI Crystal Calorimeter.HEPNP ,to be published.(in Chinese)(刘春秀等.BESⅢ晶体量能器设计中的蒙特卡罗研究.高能物理与核物理,待发表)3. Particle Data Group,Hagiwara K et al.Phys.Rev.,2002,D66:0100014. Application Software Group.GEANT User’s Guide,Program Library W5013.CERN ,1993

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LIU Chun-Xiu, FU Cheng-Dong, ZHOU Li, ZHANG Qin-Jian, XIA Xiao-Mi, LAI Yuan-Fen, LI Jin, FANG Jian, CHEN Yuan, CAI Xiao, SHANG Lei, WANG Man, LU Jun-Guang and WANG Yi-Fang. Optimization in the Design of BESⅢ CsI Crystal Calorimeter[J]. Chinese Physics C, 2003, 27(12): 1114-1118.

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Received: 2003-06-16
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

Optimization in the Design of BESⅢ CsI Crystal Calorimeter

Corresponding author: LIU Chun-Xiu,

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

Received Date: 2003-06-16
Accepted Date: 1900-01-01
Available Online: 2003-12-05

Abstract: In the process of design and research of BESⅢ crystal calorimeter we study its performance by Monte Carlo simulation and then optimize the scheme. Those results show that the the following scheme is optimized. CsI crystals typically have a front face of about 5×5cm² and a rear face of about 6.5×6.5cm², and the length of all crystals is 28cm. The crystals are supported by four iron screws fixed at the rear end. All crystals point to the collision point with a small tilt of 1°—3° in the θand 1.5° in theφ. Then we obtain that the energy resolution is about 2.1% and the position resolution about 6mm for 1GeV photon.