Alignment and measurement of the magnetic field for the BESIII muon counter
文献类型：期刊论文
| 作者 | Gao Q(高清) ; Zhang JZ(张景芝); Gao, Q; Zhang, JZ; Li, CH; Yin, JH; Yin JH(殷俊昊)
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| 刊名 | CHINESE PHYSICS C
 |
| 出版日期 | 2016 |
| 卷号 | 40期号:11 |
| 关键词 | di-muon process MUC alignment magnetic field strength measurement |
| DOI | 10.1088/1674-1137/40/11/116001 |
| 通讯作者 | 高清 ; 张景芝 |
| 文献子类 | Article |
| 英文摘要 | 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. |
| 语种 | 英语 |
| WOS记录号 | WOS:000389144400016 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/261003]  |
| 专题 | 高能物理研究所_实验物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Gao Q,Zhang JZ,Gao, Q,et al. Alignment and measurement of the magnetic field for the BESIII muon counter[J]. CHINESE PHYSICS C,2016,40(11). |
| APA | 高清.,张景芝.,Gao, Q.,Zhang, JZ.,Li, CH.,...&殷俊昊.(2016).Alignment and measurement of the magnetic field for the BESIII muon counter.CHINESE PHYSICS C,40(11). |
| MLA | 高清,et al."Alignment and measurement of the magnetic field for the BESIII muon counter".CHINESE PHYSICS C 40.11(2016). |
入库方式： OAI收割
来源：高能物理研究所
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