Chinese Physics C > 1995, Vol. 19 > Issue(12): 1062-1067

Trigger Efficiency Measurement of BES

Institute of High Energy Physics,The Chinese Academy of Sciences, Beijing 100039

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Abstract：
An experimental method to measure the efficiency of the trigger for the BES is introduced. The design of trigger table, event selection and calculation of efficiency are described. The efficiencies of various trigger conditions and event types are given.

References

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[1]	GUO Yun-Jun,HE Kang-Lin. Muon Identification Using the Efficiencies Ratio Method at BESⅡ. Chinese Physics C, 2007, 31(11): 1050-1055.
[2]	ZHANG Chang-Chun,WANG Zhe,YUAN Ye. Reconstruction of Photon Conversions and Precise Measurement of Photon Energy at BESⅡ. Chinese Physics C, 2006, 30(5): 378-386.
[3]	WANG Da-Yong,LIU Zhen-An,JIN Da-Peng,XU Hao,ZHAO Di-Xin,GUO Ya-Nan,LI Wei-Guo. Simulation Study of the Electromagnetic Calorimeter Triggers in BESⅢ. Chinese Physics C, 2005, 29(2): 168-174.
[4]	LIU Ji-Guo,AN Qi. Analysis of the Factors that Influence the Time Resolution of TOF in BESⅢ Detector. Chinese Physics C, 2004, 28(11): 1170-1175.
[5]	SHI Xin,YUAN Chang-Zheng,BAN Yong. Study of VC Trigger Efficiency on BESⅡ. Chinese Physics C, 2004, 28(9): 982-985.
[6]	LI Zhong-Chao,YU Zhong-Qiang,GUO Ya-Nan,XU Yu-Peng,YAO Zhi-Guo,LI De. Introduction of the Trigger System and the Measurement for Trigger Efficiency at L3+Cosmics Experiment. Chinese Physics C, 2002, 26(2): 172-179.
[7]	WANG Jun,LV Feng,TONG Guo-Liang,ZHANG Chang-Chun,HONG Tao,YUAN Jian-Ming,XU Ye. Study of Neutral Track Measurement at BESⅡ. Chinese Physics C, 2002, 26(2): 116-121.
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[9]	HONG Tao,LV Feng,ZHANG Chang-Chun,TONG Guo-Liang,SHEN Xiao-Yan,MAO Ze-Pu,LI Wei-Guo,SUN Liang-Feng,BIAN Jian-Guo,WANG Jun,YU Guo-Wei,YUAN Jian-Ming. BESⅡ Error Matrix Correction on Charged Channel. Chinese Physics C, 2001, 25(7): 607-616.
[10]	HUANG Guang-Shun,LI Zhong-Chao,YUAN Chang-Zheng,QI Xiang-Rong,ZHAO Di-Xin,GUO Ya-Nan,GU Jian-Hui,YU Zhong-Qiang,LI Xiao-Nan,ZHANG Jia-Wen,ZHAO Zheng-Guo. Trigger Efficiency Measurement in R Scan Experiment. Chinese Physics C, 2001, 25(9): 889-897.
[11]	LIU Bin,GUO Ya-Nan,ZHAO Di-Xin,MA En-Cheng,LI De,ZHANG Yue-Yuan,CHEN Xin-Dong. Simulation of BES Trigger. Chinese Physics C, 2001, 25(1): 1-5.
[12]	HUANG GuangShun,CHENG BaoSen,YUAN ChangZheng,LI XinHua,QIXiangRong,LIU Jing,CHEN GuangPei,CHEN JiangChuan,HU HaiMing,HU Tao,JU Xin,LI Jin,MAO ZePu,XUE ShengTian,ZHANG LiangSheng,ZHENG ZhiPeng,ZHOU Li,ZHAO ZhengGuo. New Methods to Measure Integrated Luminosity at BES. Chinese Physics C, 2000, 24(5): 373-378.
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[17]	XU Rong-Sheng,LANG Peng-Fei,CHEN Ya-Qing,ZHANG Shao-Qiang,PAN Ling-Jun,WANG Tai-Jie,HUANG De-Qiang,ZHANG Da-Hua,ZHENG Min,JIA Qiu-Ping,HE Ju,GAO Yuan-Ning,HUANG Yin-Zhi,MA En-Cheng,ZHAO Zheng-Guo,LIU Feng,CHEN Shao-Min,ZHANG Xue-Yao,LI Qun. BES Offline Data Processing. Chinese Physics C, 1991, 15(7): 577-583.
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Yu Zhongqiang, Zhao Dixin, Gu Jianhui, Guo Yanan, Zhang Bingyun, Ding Huiliang and Li Weidong. Trigger Efficiency Measurement of BES[J]. Chinese Physics C, 1995, 19(12): 1062-1067.

Yu Zhongqiang, Zhao Dixin, Gu Jianhui, Guo Yanan, Zhang Bingyun, Ding Huiliang and Li Weidong. Trigger Efficiency Measurement of BES[J]. Chinese Physics C, 1995, 19(12): 1062-1067. shu

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Received: 1900-01-01
Revised: 1900-01-01

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

Trigger Efficiency Measurement of BES

Corresponding author:Yu Zhongqiang,

Institute of High Energy Physics,The Chinese Academy of Sciences, Beijing 100039

Received Date:1900-01-01
Accepted Date:1900-01-01
Available Online:1995-12-05

Abstract:An experimental method to measure the efficiency of the trigger for the BES is introduced. The design of trigger table, event selection and calculation of efficiency are described. The efficiencies of various trigger conditions and event types are given.