Simulation Study of the Electromagnetic Calorimeter Triggers in BESⅢ

WANG Da-Yong; LIU Zhen-An; JIN Da-Peng; XU Hao; ZHAO Di-Xin; GUO Ya-Nan; LI Wei-Guo

Chinese Physics C> 2005, Vol. 29> Issue(2) : 168-174

Simulation Study of the Electromagnetic Calorimeter Triggers in BESⅢ

Institute of High Energy Physics,CAS,Beijing 100049,China2 Graduate School of the Chinese Academy of Sciences,Beijing 100049,China

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Abstract：
Based on the detector and trigger simulation of beijing spectrometer Ⅲ (besⅢ), schemes of besⅢ emc triggers are studied. neutral triggers, bhabha triggers and charged event triggers are designed to fulfill the requirements of the physics goals. the trigger parameters are optimized and the ability of backgrounds rejection are carefully studied. trigger simulation for some typical physics channels are studied and the expected backgrounds event rates are obtained

References

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. Preliminary Design Report of the BES Ⅲ Det ector. 2004. IHEP-BEPC Ⅱ SB-132. Prel iminary Design Report of BEPC Ⅱ, 2003. Linac: IHEP-BEPC-SB-03-2; Storage Ring: IHEP-BEPCⅡSB-03-3.(in Chinese)(北京正负电子对撞机重大改造工程BEPC II初步设计，2003.直线加速器IHEP-BEPCII-SB-03-2;储存环IHEP-BEPCII-SB-03-3)3. LIU Zhen-An. Preliminary Design of BES-Ⅲ Trigger System. In:CHEN H S ed. Proceedings of CHEP 2001. Beijing and New York:Science Press. 2001. 641-6464. GEANT Detector Description Tool, Version 3. 21. CERN Program Library. W5103 CERN, 19945. Gollin G D, Ernst J A, Williams J B et al. IEEE Transactions on Nuclear Science, 2001, 48(3) : 547-5516. JI Xiao-Bin, SHEN Xiao-Yan. HEP NP, 2003, 27( 12) : 1058-1061(in Chinese)(季晓斌，沈肖雁.高能物理与核物理，2003,27(12):1058-1061)7. JIN Da-Peng. Beam-Relat ed Backgrounds Study in the BEPC /BES Ⅱ/BES Ⅲ. Ph. D Thesis, Graduate School of the Chinese Academy of Sciences. Beijing, 2004. 56-92 (in Chinese)(金大鹏.北京正负电子对撞机/北京谱仪的束流相关本底研究.中国i科学院研究生院博士学位论文，2004. 56-92)

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WANG Da-Yong, LIU Zhen-An, JIN Da-Peng, XU Hao, ZHAO Di-Xin, GUO Ya-Nan and LI Wei-Guo. Simulation Study of the Electromagnetic Calorimeter Triggers in BESⅢ[J]. Chinese Physics C, 2005, 29(2): 168-174.

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Received: 2004-05-13
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

Simulation Study of the Electromagnetic Calorimeter Triggers in BESⅢ

Corresponding author: WANG Da-Yong,

Institute of High Energy Physics,CAS,Beijing 100049,China2 Graduate School of the Chinese Academy of Sciences,Beijing 100049,China

Received Date: 2004-05-13

Accepted Date: 1900-01-01

Available Online: 2005-02-05

Abstract: Based on the detector and trigger simulation of beijing spectrometer Ⅲ (besⅢ), schemes of besⅢ emc triggers are studied. neutral triggers, bhabha triggers and charged event triggers are designed to fulfill the requirements of the physics goals. the trigger parameters are optimized and the ability of backgrounds rejection are carefully studied. trigger simulation for some typical physics channels are studied and the expected backgrounds event rates are obtained

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Simulation Study of the Electromagnetic Calorimeter Triggers in BESⅢ

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