Luminosity monitoring and calibration of BLM

XUE Zhen; XU Zi-Zong; WANG Xiao-Lian; HU Tao; WANG Zhi-Yong; FU Cheng-Dong; YAN Wen-Biao; ZHOU Li; CAI Xiao; YU Bo-Xiang; FANG Jian; SUN Xi-Lei; SHI Feng; WANG Zhi-Gang; AN Zheng-Hua; SUN Li-Jun; LIU Hong-Bang; ZHANG Ai-Wu; WANG Xiao-Dong

doi:10.1088/1674-1137/35/1/001

Chinese Physics C> 2011, Vol. 35> Issue(1) : 1-5 DOI: 10.1088/1674-1137/35/1/001

Luminosity monitoring and calibration of BLM

Abstract
HTML
Reference
Related

PDF

Abstract：
The BEPCⅡ Luminosity Monitor (BLM) monitors relative luminosity per bunch. The counting rates of gamma photons, which are proportional to the luminosities from the BLM at the center of mass system energy of the ψ(3770) resonance, are obtained with a statistical error of 0.01% and a systematic error of 4.1%. Absolute luminosities are also determined by the BESⅢ End-cap Electro-Magnetic Calorimeter (EEMC) using Bhabha events with a statistical error of 2.3% and a systematic error of 3.5%. The calibration constant between the luminosities obtained with the EEMC and the counting rates of the BLM are found to be 0.84±0.03 (×10²⁶ cm^-2·count^-1). With the calibration constant, the counting rates of the BLM can be scaled up to absolute luminosities.

References

[1]

XUE Zhen et al. Chinese Physics C, 2010, 34(4): 487-4912 XUE Zhen et al. Nuclear Electronics Detection Technology, 2007，27(1): 126-129 (in Chinese)3 SHAN Qing et al. Journal of Univ. of Science and Technology of China, 2008, 38(11): 1241-1245 (in Chinese)4 Altarelli G, Buccella F. Il Nuovo Cimento, 1964, ⅩⅩⅩⅣ (5): 1337-13465 WANG Jiu-Qing. Status of BEPCⅡ, the BESⅢ Collaboration Summer 2009 Meeting6 WANG Zhi-Yong et al. Measurement of Integrated Luminosity in R Scan. HEPNP, 2001，25(2): 89-94 (in Chinese)7 PING Rong-Gang. Chinese Physics C (HEPNP), 2008, 32(8): 599-6028 Jadach S, Placzek W, Ward B F L. Phys. Lett. B, 1997, 390: 298-3089 XU H. Overview of trigger efficiency study, the BESⅢ Collaboration Winter 2009 Meeting

[1]	M. Ablikim , M. N. Achasov , S. Ahmed , X. C. Ai , et al . Luminosity measurements for the R scan experiment at BESIII. Chinese Physics C, 2017, 41(6): 063001. doi: 10.1088/1674-1137/41/6/063001
[2]	Sharifi Asadi Malafeh , M. Ghergherehchi , H. Afarideh , J. S. Chai , Yoon Sang Kim . Intelligent low-level RF system by non-destructive beam monitoring device for cyclotrons. Chinese Physics C, 2016, 40(4): 047001. doi: 10.1088/1674-1137/40/4/047001
[3]	CHEN Yu-Kai , LI Yu-Xiong , LI Wei-Min , HE Li-Juan . Theoretical analysis of BLM system for HLS Ⅱ. Chinese Physics C, 2015, 39(1): 017003. doi: 10.1088/1674-1137/39/1/017003
[4]	REN Guang-Yi , ZENG Ming , HE Yuan , LI Yu-Xiong , LI Wei-Min . Study on the selection of BLM detector for C-ADS Injector Ⅱ. Chinese Physics C, 2014, 38(11): 117004. doi: 10.1088/1674-1137/38/11/117004
[5]	LIU Ying-Biao , HE Miao , LIU Bei-Jiang , WANG Meng , MA Qiu-Mei , QI Fa-Zhi , ZENG Shan . Onsite data processing and monitoring for the Daya Bay experiment. Chinese Physics C, 2014, 38(8): 086001. doi: 10.1088/1674-1137/38/8/086001
[6]	WANG Bo-Qun , MO Xiao-Hu . Analytical determination of optimal luminosity for τ mass scan. Chinese Physics C, 2013, 37(2): 026202. doi: 10.1088/1674-1137/37/2/026202
[7]	WU Li-Wei , CAO Xue-Xiang , WANG Lu , HUANG Xian-Chao , CHAI Pei , YUN Ming-Kai , ZHANG Yu-Bao , ZHANG Long , SHAN Bao-Ci , WEI Long . Geometric calibration for a SPECT systemdedicated to breast imaging. Chinese Physics C, 2012, 36(10): 1019-1024. doi: 10.1088/1674-1137/36/10/019
[8]	HU Ji-Feng , ZHENG Yang-Heng , SUN Xiao-Dong , JI Xiao-Bin . A data quality monitoring software framework for the BESⅢ experiment. Chinese Physics C, 2012, 36(1): 62-66. doi: 10.1088/1674-1137/36/1/010
[9]	TIAN Jian-Min , XU Mei-Hang , ZHAO Zhong-Liang , CHEN Chang , RUAN Xiang-Dong , CHEN Yuan-Bo , XU Tao-Guang , LU Shuang-Tong . Improved design and construction of an ionization chamber for the CSNS beam loss monitor (BLM). Chinese Physics C, 2012, 36(4): 329-333. doi: 10.1088/1674-1137/36/4/006
[10]	SUN Xiao-Dong , HU Ji-Feng , ZHAO Hai-Sheng , JI Xiao-Bin , WANG Yi-Fang , ZHENG Yang-Heng , LIU Bei-Jiang . Online data quality monitoring system at BESⅢ. Chinese Physics C, 2012, 36(7): 622-627. doi: 10.1088/1674-1137/36/7/010
[11]	ZHAO Chuan , SUN Sheng-Sen , LI Cheng , ZHANG Xiao-Jie , HE Kang-Lin , AN Qi , CHEN Hong-Fang , DAI Hong-Liang , FENG Chang-Qing , HENG Yue-Kun , HUANG Ya-Qi , HUANG Yan-Ping , GUO Jian-Hua , LI Wei-Dong , LI Xiu-Rong , LIU Fang , LIU Huai-Min , LIU Shu-Bin , LIU Shu-Dong , LIU Yong , MA Xiang , MAO Ze-Pu , SHAO Ming , SUN Yong-Jie , SUN Zhi-Jia , WU Jin-Jie , YANG Gui-An , ZHAO Lei , ZHU Xing-Wang , ZUO Jia-Xu . Time calibration for the end cap TOF system of BESⅢ. Chinese Physics C, 2011, 35(1): 72-78. doi: 10.1088/1674-1137/35/1/015
[12]	BIAN Jian-Ming , HE Kang-Lin , LI Wei-Guo , HU Tao , FU Cheng-Dong , HUANG Bin , LIU Ying , NING Fei-Peng , SONG Wen-Bo , SUN Sheng-Sen , XU Min , YAN Jie , YAN Liang , . Absolute photon energy calibration for the BESⅢ EMC. Chinese Physics C, 2010, 34(1): 72-77. doi: 10.1088/1674-1137/34/1/013
[13]	ZHOU Xue-Mei , LIU Gui-Min , HOU Jie , ZHANG Wen-Zhi , TIAN Shun-Qiang . Excitation curve calibration for the SSRF magnet system. Chinese Physics C, 2010, 34(5): 589-592. doi: 10.1088/1674-1137/34/5/015
[14]	E. A. Kuraev , A. L. Sibidanov . Monte Carlo generator photon jets used for luminosity at e⁺e^－ colliders. Chinese Physics C, 2010, 34(6): 877-882. doi: 10.1088/1674-1137/34/6/044
[15]	Carloni Calame . Status and accuracy of the Monte Carlo generators for luminosity measurements. Chinese Physics C, 2010, 34(6): 883-888. doi: 10.1088/1674-1137/34/6/045
[16]	XUE Zhen , SHAN Qing , XU Zi-Zong , WANG Xiao-Lian , WU Jian , WANG Yong-Gang , ZHANG Tao , HU Tao , CAI Xiao , WANG Yi-Fang . A fast luminosity monitor for BEPCⅡ. Chinese Physics C, 2010, 34(4): 487-491. doi: 10.1088/1674-1137/34/4/013
[17]	LI Shu-Wei , WANG Yi , LI Jin , LI Yuan-Jing , KANG Ke-Jun , LIN De-Xu , ZHANG Qing-Jun . Monitoring the energy variation of an electron linac using a Cerenkov detector. Chinese Physics C, 2010, 34(1): 126-130. doi: 10.1088/1674-1137/34/1/023
[18]	XU Mei-Hang , TIAN Jian-Min , CHEN Chang , CHEN Yuan-Bo , XU Tao-Guang , LU Shuang-Tong . Design and construction of the first prototype ionization chamber for CSNS and PA beam loss monitor (BLM) system. Chinese Physics C, 2009, 33(2): 123-126. doi: 10.1088/1674-1137/33/2/010
[19]	Xu Shuwei , Liu Manqing . Energy Calibration for a Plastic Scintillator Beta-Detector Telescope. Chinese Physics C, 1990, 14(S1): 101-104.
[20]	Ni Hutting , Zhou Haushi , Jiang Chunhua , Guo Hongfei , Xu Jiangou , Zhu Qiming , Wang Fang , Liu Wei , Li Jiahua . The Luminosity Monitor of Beijing Spectrometer (BES). Chinese Physics C, 1990, 14(S3): 237-248.

Access

Get Citation

XUE Zhen, XU Zi-Zong, WANG Xiao-Lian, HU Tao, WANG Zhi-Yong, FU Cheng-Dong, YAN Wen-Biao, ZHOU Li, CAI Xiao, YU Bo-Xiang, FANG Jian, SUN Xi-Lei, SHI Feng, WANG Zhi-Gang, AN Zheng-Hua, SUN Li-Jun, LIU Hong-Bang, ZHANG Ai-Wu, WANG Xiao-Dong and Luminosity monitoring and calibration of BLM[J]. Chinese Physics C, 2011, 35(1): 1-5. doi: 10.1088/1674-1137/35/1/001

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2010-04-23
Revised: 2010-05-18

Article Metric

Article Views(2721)
PDF Downloads(842)
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

Luminosity monitoring and calibration of BLM

Received Date: 2010-04-23

Accepted Date: 2010-05-18

Available Online: 2011-01-05

Abstract: The BEPCⅡ Luminosity Monitor (BLM) monitors relative luminosity per bunch. The counting rates of gamma photons, which are proportional to the luminosities from the BLM at the center of mass system energy of the ψ(3770) resonance, are obtained with a statistical error of 0.01% and a systematic error of 4.1%. Absolute luminosities are also determined by the BESⅢ End-cap Electro-Magnetic Calorimeter (EEMC) using Bhabha events with a statistical error of 2.3% and a systematic error of 3.5%. The calibration constant between the luminosities obtained with the EEMC and the counting rates of the BLM are found to be 0.84±0.03 (×10²⁶ cm^-2·count^-1). With the calibration constant, the counting rates of the BLM can be scaled up to absolute luminosities.

HTML

Reference (1)

Luminosity monitoring and calibration of BLM

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

Luminosity monitoring and calibration of BLM

HTML

目录