Trigger Efficiency Measurement in R Scan Experiment

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

Chinese Physics C> 2001, Vol. 25> Issue(9) : 889-897

Trigger Efficiency Measurement in R Scan Experiment

China Center of Advanced Science and Technology, Beijing 100080, China2 Institute of High Energy Physics, CAS, Beijing 100039, China

Abstract
HTML
Reference
Related

PDF

Abstract：
A method is introduced to measure the trigger efficiency in R scan experiment carried out with BESII at BEPC. The design of trigger table, offline event selection and calculation of efficiency are described. The principle of trigger efficiency measurement is: a data sample for specific physics event type is chosen orthogonally to certain trigger condition at both online trigger level and offline selection level; and then the ratio of number of events in the sample which satisfy the trigger condition to the total number of events in the sample is the efficiency of this trigger condition. The efficiencies of various trigger conditions, trigger channels and event types are given.

References

[1]

. BAI Jing-Zhi et al.Nucl.Instr.and Meth.inPhys.Res.,1994,A344:319 2. DING Hui-Liang et al.High Energy Phys.and Nucl.Phys.,1992,16:769(in Chinese)(丁慧良等.高能物理与核物理,1992,16:769) 3. BAI Jing-Zhi et al.The BES Upgrade.Nucl.Instr.and Meth.in Phys.Res.,2001,A458:627 4. BAI Jing-Zhi et al.Phys.Rev.Lett.,2000,84:5945. ZHAO Zheng-Guo.New R Values in 2—5 GeV from the BESII at BEPC .,In:Proceedings of 30th lnternational Conference on High Energy Physics.Singapore:WorldS cientific Publishiny Company.2001, (to be published)6. Davier M ,Hoeker A .Phys.Lett.,1998,B419:419 7. Pietryyk B .The Global Fit to Electroweak Data.In:Proceedings of 30th lnternational Conference on High Energy Physics.Sin gapore:World Scientific Publishiny Company.2001,(to be published) 8. HUANG Guang-Shun et al.High Energy Phys.and Nucl.Phys.2000,24:373(in Chinese)(黄光顺等.高能物理与核物理,2000,24:373) 9. CHEN Jiang-Chuan et al.Phys.Rev.,2000,D62:03400310. QI Xiang-Rong et al.High Energy Phys.and Nucl.Phys.,1999,23:1(in Chinese)(祁向荣等.高能物理与核物理,1999,23:1) 11. HU Hai-Ming et al.High Energy Phys.and Nucl.Phys.,2001,25(8):701(in Chinese)(胡海明等.高能物理与核物理,2001,25(8):701) 12. WANG Zhi-Yong et al.High Energy Phys.and Nucl.Phys.,2001,25(2):89(in Chinese)(王至勇等.高能物理与核物理,2001,25(2):89)13. YU Zhong-Qiang et al.High Energy Phys.and Nucl.Phys.,1995,19:1062(in Chinese)(郁忠强等.高能物理与核物理,1995,19:1062)14. HUANG Guang-Shun.Trigger Efficiency Determination in the First R Scan.In:BES Couaboration The 8th BES Annual Meeting,Beijing June1999,140—147

[1]	MEN Tao , GAO Jing-Ming , LIU Lie , WEN Jian-Chun . Experimental Study of the Gas Triggered Switch's Breakdown by Optical Measurement. Chinese Physics C, 2008, 32(S1): 310-312.
[2]	LV Hai-Jiang , YE Yun-Xiu , YAN Xin-Hu , JIANG Yi , ZHANG Pei , YE Qiu-Jian . Particle Identification and Its Efficiency for Small Angle GDH Experiment in JLab Hall-A. Chinese Physics C, 2007, 31(8): 764-768.
[3]	HU Hai-Ming , WENG Yao , GUO Yi-Qing , JIN Yi , ZHANG Bing-Xin , HU Jun-Hui , GAO Yuan-Ning . Improvement on Hadronic Event Selection in R Measurement. Chinese Physics C, 2007, 31(9): 802-809.
[4]	WANG Ya-Ping , CAI Xu . Simulation Studies on the Trigger Decision Criterion of Photon Spectrometer in ALICE Experiment. Chinese Physics C, 2006, 30(7): 606-611.
[5]	JIAO Jian-Bin , ZHU Yong-Sheng , ZHANG Xue-Yao . Efficiency Correction in the Measurement of ψ′→pp Angular Distribution. Chinese Physics C, 2006, 30(10): 931-935.
[6]	ZHOU Yuan , HE Hui-Hai , MU Jun . Monte Carlo Study for the Effect of Geomagnetic Field on Trigger Efficiency of ARGO-YBJ Experiment. Chinese Physics C, 2005, 29(6): 549-554.
[7]	SHI Xin , YUAN Chang-Zheng , BAN Yong . Study of VC Trigger Efficiency on BESⅡ. Chinese Physics C, 2004, 28(9): 982-985.
[8]	XUE Sheng-Tian . R Measurement and Related Physics. Chinese Physics C, 2003, 27(11): 1044-1052.
[9]	MO Xiao-Hu , ZHU Yong-Sheng . Correlated Data Fitting and Error Analysis in ψ(2S) Scan Experiment. Chinese Physics C, 2003, 27(6): 474-478.
[10]	HUANG Guang-Shun . R Measurement and Standard Model Test. Chinese Physics C, 2002, 26(S1): 41-46.
[11]	YAN Wen-Biao , CAI Xiao , CHI Shao-Peng , DAI Yu-Mei , HUANG Guang-Shun , LI Hui-Hong , WANG Zhi-Yong , ZHANG Lei , ZHANG Liang-Sheng , ZHAO Zheng-Guo . Subtraction of Beam-Associated Background in R Measurement. Chinese Physics C, 2002, 26(10): 998-1003.
[12]	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.
[13]	HU Hai-Ming , TAI An , HUANG Guang-Shun , QI Xiang-Rong , CAI Xiao , CHEN Jiang-Chuan , DAI Yu-Mei , WANG Zhi-Yong , XUE Sheng-Tian , YAN Wen-Biao , ZHOU Li , ZHAO Zheng-Guo . Applications of LUND Area Law Generator in R Measurement. Chinese Physics C, 2001, 25(11): 1035-1043.
[14]	HU Hai-Ming , QI Xiang-Rong , HUANG Guang-Shun , ZHAO Zheng-Guo . Initial State Radiative Correction in R Measurement at BES. Chinese Physics C, 2001, 25(8): 701-709.
[15]	MO Xiao-Hu , ZHU Yong-Sheng . Determination of Decay Width Error and Luminosity in ψ(2S) Scan. Chinese Physics C, 2001, 25(12): 1133-1139.
[16]	WANG Zhi-Yong , YUAN Chang-Zheng , HUANG Guang-Shun , CHENG Bao-Sen , QI Xiang-Rong , CHEN Guang-Pei , CHEN Jiang-Chuan , HU Hai-Ming , HU Tao , Li Jin , MAO Ze-Pu , XUE Sheng-Tian , ZHOU Li , ZHAO Zheng-Guo . Measurement of Integrated Luminosity in R Scan. Chinese Physics C, 2001, 25(2): 89-94.
[17]	Yu Zhongqiang , Zhao Dixin , Gu Jianhui , Guo Yanan , Zhang Bingyun , Ding Huiliang , Li Weidong . Trigger Efficiency Measurement of BES. Chinese Physics C, 1995, 19(12): 1062-1067.
[18]	HAO Wei , LU Chang-Guo , QUE You-Kun , ZHOU Yue-Hua . A TRIGGER SCHEME FOR COSMIC RAY EXPERIMENT WITH A SAMPLE-AND-HOLD SYSTEM. Chinese Physics C, 1989, 13(4): 293-297.
[19]	ZHU Qing-Qi , WU Shi-Pei . SIMULATION CALCULATION FOR DETECTION EFFICIENCY IN THE MEASUREMENT OF COSMIC RAY HADRON SPECTRA. Chinese Physics C, 1985, 9(3): 263-267.
[20]	WU YING-RONG , ZHAO CHANG-ZHAN , TANG SU-QIU , ZHAO JING-WEI , MAO CHENG-SHENG , WANG SHI-WEI , TAI YONG-SHENG , HU JIA-WEI , XU SHAO-WANG , CHANG ZHEN , TANG FU-KUN , HAN YING , XIE XIAO-XI . ON-LINE MEASUREMENT OF THE EFFECIENCY PLATEAU CURVES OF PROPORTIONAL TUBE COUNTERS. Chinese Physics C, 1983, 7(6): 772-778.

Access

Get Citation

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 and ZHAO Zheng-Guo. Trigger Efficiency Measurement in R Scan Experiment[J]. Chinese Physics C, 2001, 25(9): 889-897.

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2000-09-29
Revised: 1900-01-01

Article Metric

Article Views(2736)
PDF Downloads(658)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Trigger Efficiency Measurement in R Scan Experiment

Corresponding author: HUANG Guang-Shun,

China Center of Advanced Science and Technology, Beijing 100080, China2 Institute of High Energy Physics, CAS, Beijing 100039, China

Received Date: 2000-09-29

Accepted Date: 1900-01-01

Available Online: 2001-09-05

Abstract: A method is introduced to measure the trigger efficiency in R scan experiment carried out with BESII at BEPC. The design of trigger table, offline event selection and calculation of efficiency are described. The principle of trigger efficiency measurement is: a data sample for specific physics event type is chosen orthogonally to certain trigger condition at both online trigger level and offline selection level; and then the ratio of number of events in the sample which satisfy the trigger condition to the total number of events in the sample is the efficiency of this trigger condition. The efficiencies of various trigger conditions, trigger channels and event types are given.

HTML

Reference (1)

Trigger Efficiency Measurement in R Scan Experiment

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article