Track reconstruction in the BESⅢ muon counter
The reconstruction algorithm for BESⅢ Muon Counter, MucRecAlg, is developed with the object-oriented language C++ in BESⅢ offline software environment. MucRecAlg consists of the following functions: to find track seeds either from extrapolation of tracks in the main drift chamber or from the fired strips in muon counter, to select fired strips associated to the candidate tracks, to fit the candidate tracks with a linear or quadratic function and to calculate other parameters of the tracks for muon identification. Monte Carlo samples are generated to check the performance of the reconstruction package, such as reconstruction efficiency, muon remaining rate and pion rejection rate, etc. The preliminary results show that the pion rejection rate is around 3%-4% while the muon remaining rate is better than 90% in 0.4-1.6 GeV/c momentum region, which meets the requirement as shown in the design report.
作 者： LIANG Yu-Tie LIU Kun YOU Zheng-Yun MAO Ya-Jun LI Wei-Dong BIAN Jian-Ming CAO Guo-Fu CAO Xue-Xiang CHEN Shen-Jian DENG Zi-Yan FU Cheng-Dong GAO Yuan-Ning HAN Lei HAN Shao-Qing HE Kang-Lin HE Miao HU Ji-Feng HU Xiao-Wei HUANG Bin HUANG Xing-Tao JIA Lu-Kui JI Xiao-Bin LI Hai-Bo LIU Bei-Jiang LIU Chun-Xiu LIU Huai-Min LIU Ying LIU Yong LUO Tao Lü Qi-Wen MA Qiu-Mei MA Xiang MAO Ze-Pu MO Xiao-Hu NING Fei-Peng PING Rong-Gang QIU Jin-Fa SONG Wen-Bo SUN Sheng-Sen SUN Xiao-Dong SUN Yong-Zhao TIAN Hao-Lai WANG Ji-Ke WANG Liang-Liang WEN Shuo-Pin WU Ling-Hui WU Zhi XIE Yu-Guang XU Min YAN Jie YAN Liang YAO Jian YUAN Chang-Zheng YUAN Ye ZHANG Chang-Chun ZHANG Jian-Yong ZHANG Lei ZHANG Xue-Yao ZHANG Yao ZHENG Yang-Heng ZHU Yong-Sheng ZOU Jia-Heng 作者单位： LIANG Yu-Tie,LIU Kun,YOU Zheng-Yun,MAO Ya-Jun(School of Physics and State Key Laboratory of Nuclear Physics & Technology, Peking University, Beijing 100871, China)LI Wei-Dong,DENG Zi-Yan,FU Cheng-Dong,HE Kang-Lin,HE Miao,JI Xiao-Bin,LI Hai-Bo,LIU Chun-Xiu,LIU Huai-Min,MA Qiu-Mei,MAO Ze-Pu,MO Xiao-Hu,PING Rong-Gang,QIU Jin-Fa,SUN Sheng-Sen,SUN Yong-Zhao,WEN Shuo-Pin,XIE Yu-Guang,YUAN Chang-Zheng,YUAN Ye,ZHANG Chang-Chun,ZHANG Jian-Yong,ZHANG Yao,ZHU Yong-Sheng(Institute of High Energy Physics, CAS, Beijing 100049, China)
BIAN Jian-Ming,CAO Guo-Fu,CAO Xue-Xiang,HUANG Bin,JIA Lu-Kui,LIU Bei-Jiang,LIU Yong,LUO Tao,MA Xiang,SUN Xiao-Dong,TIAN Hao-Lai,WANG Ji-Ke,WANG Liang-Liang,WU Ling-Hui,WU Zhi,YAN Liang(Institute of High Energy Physics, CAS, Beijing 100049, China;Graduate University of Chinese Academy of Sciences, Beijing 100049, China)
CHEN Shen-Jian,HU Xiao-Wei,ZHANG Lei(Nanjing University, Nanjing 210093, China)
GAO Yuan-Ning(Tsinghua University, Beijing 100084, China)
HAN Lei(Henan Normal University, Henan 453007, China)
HAN Shao-Qing(Nanjing Normal University, Nanjing 210097, China)
HU Ji-Feng,ZHENG Yang-Heng(Graduate University of Chinese Academy of Sciences, Beijing 100049, China)
HUANG Xing-Tao,ZHANG Xue-Yao,ZOU Jia-Heng(Shandong University, Jinan 250100, China)
LIU Ying(Guangxi University, Nanning 530004, China)
Lü Qi-Wen,NING Fei-Peng(Shanxi University, Taiyuan 003006, China)
SONG Wen-Bo,YAO Jian(Zhengzhou University, Zhengzhou 450001, China)
XU Min,YAN Jie(Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China)
刊 名： 中国物理C（英文版） ISTIC 英文刊名： CHINESE PHYSICS C 年，卷(期)： 2009 33(8) 分类号： O4 关键词： BESⅢ MUC reconstruction