Alignment and measurement of the magnetic field for the BESIII muon counter

Qing Gao; Jing-Zhi Zhang; Chun-Hua Li; Jun-Hao Yin

doi:10.1088/1674-1137/40/11/116001

Chinese Physics C> 2016, Vol. 40> Issue(11) : 116001 DOI: 10.1088/1674-1137/40/11/116001

Alignment and measurement of the magnetic field for the BESIII muon counter

1.
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
2.
University of Melbourne, VIC 3010, Australia

Abstract
HTML
Reference
Related

PDF

Abstract：
Based on cosmic ray events without a magnetic field taken with the BESIII detector during the summer shutdown of BEPCII in 2012 and di-muon events from a data sample taken at center-of-mass energy of 3.686 GeV in 2009, we compare the coordinates of hits registered in the BESIII muon counter with the expected interaction point extrapolated from reconstructed tracks from the inner tracking system in the absence of a magnetic field. By minimizing the difference, we align the muon counter with the inner tracking system. Moreover, the strength of the magnetic field in the muon counter is measured for the first time with di-muon events from data taken at a center-of-mass energy of 3.686 GeV. After the alignment and the magnetic field strength measurement, the offsets in the reconstructed hit positions for muon tracks are reduced, which improves the muon identification. The alignment and magnetic field strength measurement have been adopted in the latest version of the BESIII offline software system. This addition to the software reduces the systematic uncertainty for the physics analysis in cases where the muon counter information is used.
- di-muon process ,
- MUC alignment ,
- magnetic field strength measurement

References

[1]	M. Ablikim et al (BESIII Collaboration), Nucl. Instrum. Meth. A, 614: 345(2010)
[2]	J. Z. Bai et al (BESIII Collaboration), Nucl. Instrum. Meth. A, 344: 319(1994)
[3]	Y. T. Liang et al, Chin. Phys. C, 33: 562-566(2009)
[4]	ANSYS, Inc. Theory Reference (1998)
[5]	Z. Wang et al, HEP NP 27(8), 716-721(2003) (in Chinese)
[6]	W. D. Li, H. M. Liu et al, in Proceeding of CHEP06 (Mumbai 2006)
[7]	S. Agostinelli et al (GEANT4 Collaboration), Nucl. Instrum. Meth. A, 506: 250(2003)

[1]	WANG Yuan , JIANG Xiao-Guo , YANG Guo-Jun , CHEN Si-Fu , ZHANG Zhuo , WEI Tao , LI Jin . Time-resolved energy spectrum measurement of a linear induction accelerator with the magnetic analyzer. Chinese Physics C, 2015, 39(1): 017004. doi: 10.1088/1674-1137/39/1/017004
[2]	FU Dong-Po , ZHAO Wei-Jiang , GUO Peng , ZHU Kun , WANG Jing-Hui , HUA Jing-Shan , REN Xiao-Tang , XUE Jian-Ming , ZHAO Hong-Wei , LIU Ke-Xin . Discharge characteristics of the DUHOCAMIS with a high magnetic bottle-shaped field. Chinese Physics C, 2014, 38(10): 107006. doi: 10.1088/1674-1137/38/10/107006
[3]	LAN Chao-Hui , PENG Yu-Fei , YANG Zhen , LONG Ji-Dong . Effect of H^- ion extraction on a plasma sheath underan external weak magnetic field. Chinese Physics C, 2013, 37(5): 057002. doi: 10.1088/1674-1137/37/5/057002
[4]	LIANG Mai-Lin , ZHANG Ya-Bin , YANG Rui-Lin , ZHANG Fu-Lin . Dirac equation with a magnetic field in 3D non-commutative phase space. Chinese Physics C, 2013, 37(6): 063106. doi: 10.1088/1674-1137/37/6/063106
[5]	LI Chao-Yang , PAN Hai-Bin , WEI Shen , PAN Cong-Yuan , AN Ning , DU Xue-Wei , ZHU Jun-Fa , WANG Qiu-Ping . Alignment of the photoelectron spectroscopy beamline at NSRL. Chinese Physics C, 2013, 37(11): 118002. doi: 10.1088/1674-1137/37/11/118002
[6]	ZHANG Yun-Jian , MA Qiao-Sheng , LUO Xiong . Study of a compact external magnetic field radial split-cavity oscillator. Chinese Physics C, 2011, 35(4): 381-386. doi: 10.1088/1674-1137/35/4/011
[7]	MA Qiao-Sheng , LIU Zhong , WU Yong , JIN Xiao . Experimental investigation of the relativistic backward wave oscillator with a periodic guiding magnetic field. Chinese Physics C, 2010, 34(4): 499-501. doi: 10.1088/1674-1137/34/4/016
[8]	WANG Jing-Hui , ZHU Kun , ZHAO Wei-Jiang , LIU Ke-Xin . Theoretical analysis of a new extraction system for a DUHOCAMIS operating in a high magnetic field. Chinese Physics C, 2010, 34(11): 1738-1741. doi: 10.1088/1674-1137/34/11/014
[9]	WANG Ji-Ke , MAO Ze-Pu , BIAN Jian-Ming , CAO Guo-Fu , CAO Xue-Xiang , CHEN Shen-Jian , DENG Zi-Yan , FU Cheng-Dong , GAO Yuan-Ning , HE Kang-Lin , HE Miao , HUA Chun-Fei , HUANG Bin , HUANG Xing-Tao , JI Xiao-Bin , LI Fei , LI Hai-Bo , LI Wei-Dong , LIANG Yu-Tie , LIU Chun-Xiu , LIU Huai-Min , LIU Suo , LIU Ying-Jie , MA Qiu-Mei , MA Xiang , MAO Ya-Jun , MO Xiao-Hu , PAN Ming-Hua , PANG Cai-Ying , PING Rong-Gang , QIN Ya-Hong , QIU Jin-Fa , SUN Sheng-Sen , SUN Yong-Zhao , WANG Liang-Liang , WEN Shuo-Pin , , , , , , . Software alignment of the BESⅢ main drift chamber using the Kalman Filter method. Chinese Physics C, 2009, 33(3): 210-216. doi: 10.1088/1674-1137/33/3/010
[10]	FAN Ping , YUAN Da-Qing , ZUO Yi , ZHENG Yong-Nan , ZHOU Dong-Mei , WU Xiao-Guang , LI Guang-Sheng , ZHU Li-Hua , XU Guo-Ji , FAN Qi-Wen , ZHANG Xi-Zhen , ZHU Sheng-Yun . Proton alignment in ⁸²Sr investigated by g-factor measurements. Chinese Physics C, 2009, 33(S1): 206-208. doi: 10.1088/1674-1137/33/S1/066
[11]	ZHONG Jun-Qing , AN Shi-Zhong , YAO Hong-Juan , ZHANG Tian-Jue , BI Yuan-Jie . Influence of radial magnetic field on emittance in the median plane at CYCIAE-100. Chinese Physics C, 2009, 33(S2): 53-55. doi: 10.1088/1674-1137/33/S2/014
[12]	MA Qiao-Sheng , FAN Zhi-Kai , ZHOU Chuan-Ming . Simulation of the relativistic backward wave oscillator with a sinusoidal guiding magnetic field. Chinese Physics C, 2009, 33(3): 232-235. doi: 10.1088/1674-1137/33/3/013
[13]	QIN Meng , TIAN Dong-Ping . Bipartite entanglement in a two-qubit Heisenberg XXZ chain under aninhomogeneous magnetic field. Chinese Physics C, 2009, 33(4): 249-251. doi: 10.1088/1674-1137/33/4/002
[14]	DAI Zhi-Yong , XIE Yu-Tong , LI Hong , ZHANG Wen-Wei , LIU Yun-Long , PAN Hai-Feng , ZHANG Lin-Wen , DENG Jian-Jun . Alignment techniques for DRAGON-Ⅰ LIA. Chinese Physics C, 2009, 33(9): 789-791. doi: 10.1088/1674-1137/33/9/016
[15]	YUAN Da-Qing , ZHENG Yong-Nan , ZHOU Dong-Mei , ZUO Yi , FAN Ping , LIU Meng , WU Xiao-Guang , ZHU Li-Hua , LI Guang-Sheng , XU Guo-Ji , FAN Qi-Wen , ZHANG Xi-Zhen , ZHU Sheng-Yun . g-factors measurement of magnetic rotation band in ⁸⁵Zr. Chinese Physics C, 2008, 32(S2): 170-173.
[16]	LIU Jing-Jing , LUO Zhi-Quan . Neutrino energy loss by electron capture in magnetic field at the crusts of neutron stars. Chinese Physics C, 2008, 32(2): 108-111. doi: 10.1088/1674-1137/32/2/007
[17]	HUANG Wei , XU Wang , YAN Mu-Lin . Backward Compton scattering and QED with noncommutative plane in the strong uniform magnetic field. Chinese Physics C, 2008, 32(5): 342-347. doi: 10.1088/1674-1137/32/5/003
[18]	C. Aydin , M. Bayar , N. Kilic . Bounds on the magnetic moment of the τ-neutrino via the process e⁺e－→ννγ. Chinese Physics C, 2008, 32(8): 608-611. doi: 10.1088/1674-1137/32/8/003
[19]	MA Qiao-Sheng , WU Yong , FAN Zhi-Kai , GAN Yan-Qing , JIN Xiao , ZHOU Chuan-Ming . Experimental investigation of backward wave oscillator with low magnetic field. Chinese Physics C, 2008, 32(3): 222-226. doi: 10.1088/1674-1137/32/3/013
[20]	Zhang Chuang , Chen Siyu . A General Formula of Tune Spread Caused by the Middle-Plane-Asymmetrical Magnetic Field Errors. Chinese Physics C, 1988, 12(S2): 181-188.

Access

Get Citation

Qing Gao, Jing-Zhi Zhang, Chun-Hua Li and Jun-Hao Yin. Alignment and measurement of the magnetic field for the BESIII muon counter[J]. Chinese Physics C, 2016, 40(11): 116001. doi: 10.1088/1674-1137/40/11/116001

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2016-04-03
Revised: 2016-05-31

Fund

Supported by National Key Basic Research Program of China (2015CB856701), National Natural Science Foundation of China (NSFC) (11475187, 11575198, 11521505), 100 Talents Program of CAS (U-25)

Article Metric

Article Views(1739)
PDF Downloads(136)
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

Alignment and measurement of the magnetic field for the BESIII muon counter

Corresponding author: Qing Gao,

Corresponding author: Jing-Zhi Zhang,

1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

2. University of Melbourne, VIC 3010, Australia

Received Date: 2016-04-03

Accepted Date: 2016-05-31

Available Online: 2016-11-05

Fund Project: Supported by National Key Basic Research Program of China (2015CB856701), National Natural Science Foundation of China (NSFC) (11475187, 11575198, 11521505), 100 Talents Program of CAS (U-25)

Abstract: Based on cosmic ray events without a magnetic field taken with the BESIII detector during the summer shutdown of BEPCII in 2012 and di-muon events from a data sample taken at center-of-mass energy of 3.686 GeV in 2009, we compare the coordinates of hits registered in the BESIII muon counter with the expected interaction point extrapolated from reconstructed tracks from the inner tracking system in the absence of a magnetic field. By minimizing the difference, we align the muon counter with the inner tracking system. Moreover, the strength of the magnetic field in the muon counter is measured for the first time with di-muon events from data taken at a center-of-mass energy of 3.686 GeV. After the alignment and the magnetic field strength measurement, the offsets in the reconstructed hit positions for muon tracks are reduced, which improves the muon identification. The alignment and magnetic field strength measurement have been adopted in the latest version of the BESIII offline software system. This addition to the software reduces the systematic uncertainty for the physics analysis in cases where the muon counter information is used.

HTML

Reference (7)

Alignment and measurement of the magnetic field for the BESIII muon counter

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article