| Improvement of main drift chamber Monte-Carlo tuning model at BESⅢ |
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| 作者姓名： | 张瑞 肖栋 安芬芬 高原宁 何康林 季晓斌 金山 李卫东 李卫国 刘怀民 刘凯 沈肖雁 王贻芳 伍灵慧 徐庆年 袁野 张瑶 赵光 郑阳恒 |
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| 作者单位： | 1 University of Chinese Academy of Sciences, Beijing 100049, China;;2 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;;3 Tsinghua University, Beijing 100084, China |
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| 基金项目： | Supported by Ministry of Science and Technology of China(2009CB825200);Joint Funds of National Natural Science Foundation of China(11079008,U1232201);Natural Science Foundation of China(11275266,11205184,11205182,11275210);SRF for ROCS of SEM |
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| 摘 要： | Based on real data,a new parameterized model of the main drift chamber response is proposed.In this model,we tune the ratio of good hits and the residual distribution separately.By data quality checking,the diference between simulation and data in track reconstruction efciency reduces from 1%to 0.5%averagely for the pion in J/ψ→π+ππ0,and the momentum resolution agreement improves significantly for the proton in J/ψ→ppˉ.
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| 关 键 词： | BESⅢ main drift chamber Monte-Carlo tuning hit category |
| 收稿时间： | 2013-04-22 |
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