| Calibration study of the X-T relation for the BESⅢ drift chamber |
| |
| 引用本文： | 康晓琳,伍灵慧,吴智,罗涛,胡琛,王海霞,房双世,何康林,李卫东,李卫国,刘怀民,毛泽普,王亮亮,袁野,张瑶.Calibration study of the X-T relation for the BESⅢ drift chamber[J].中国物理 C,2015,39(2):50-55. |
| |
| 作者姓名： | 康晓琳 伍灵慧 吴智 罗涛 胡琛 王海霞 房双世 何康林 李卫东 李卫国 刘怀民 毛泽普 王亮亮 袁野 张瑶 |
| |
| 作者单位： | 1 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;;2 University of Chinese Academy of Sciences, Beijing 100049, China;;3 University of Hawaii, Honolulu, Hawaii 96822, USA;;4 Nanjing Normal University, Nanjing 210023, China;;5 Central China Normal University, Wuhan 430079, China |
| |
| 基金项目： | Supported by National Natural Science Foundation of China(11205184,11205182,11121092,11179020);Joint Funds of National Natural Science Foundation of China(U1232201) |
| |
| 摘 要： | Offline calibration plays an important role in BES offline data processing. In order to achieve good spatial and momentum resolution, it is necessary to implement high precision offline calibration for the BES drift chamber. This paper studies the time-to-distance relations, which are important calibration constants for track reconstruction. The parameterization of the time-to-distance relation, studies of left-right asymmetry and studies of variation with entrance angle are performed. The impact of dead channels on the time-to-distance relation is given special attention in order to reduce the shift in measured momentum for tracks passing near dead cells. Finally we present the resolutions for barrel Bhabha events(|cos θ|< 0.8) from a J/ψ data set taken in 2012. The average spatial resolution is 123 μm and the momentum resolution for 1.548 Ge V/c Bhabha tracks is 11.9 Me V/c.
|
| 关 键 词： | BES drift chamber X-T relation calibration |
| 收稿时间： | 2014-5-12 |
| 修稿时间： | 2014-6-28 |
Calibration study of the X-T relation for the BES drift chamber |
| |
| KANG Xiao-Lin;WU Ling-Hui;WU Zhi;LUO Tao;HU Chen;WANG Hai-Xia;FANG Shuang-Shi;HE Kang-Lin;LI Wei-Dong;LI Wei-Guo;LIU Huai-Min;MAO Ze-Pu;WANG Liang-Liang;YUAN Ye;ZHANG Yao.Calibration study of the X-T relation for the BES drift chamber[J].High Energy Physics and Nuclear Physics,2015,39(2):50-55. |
| |
| Authors: | KANG Xiao-Lin;WU Ling-Hui;WU Zhi;LUO Tao;HU Chen;WANG Hai-Xia;FANG Shuang-Shi;HE Kang-Lin;LI Wei-Dong;LI Wei-Guo;LIU Huai-Min;MAO Ze-Pu;WANG Liang-Liang;YUAN Ye;ZHANG Yao |
| |
| Institution: | KANG Xiao-Lin;WU Ling-Hui;WU Zhi;LUO Tao;HU Chen;WANG Hai-Xia;FANG Shuang-Shi;HE Kang-Lin;LI Wei-Dong;LI Wei-Guo;LIU Huai-Min;MAO Ze-Pu;WANG Liang-Liang;YUAN Ye;ZHANG Yao;Institute of High Energy Physics, Chinese Academy of Sciences;University of Chinese Academy of Sciences;University of Hawaii, Honolulu;Nanjing Normal University;Central China Normal University; |
| |
| Abstract: | |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《中国物理 C》浏览原始摘要信息 |
| 点击此处可从《中国物理 C》下载免费的PDF全文 |
|
