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＋π π0, and the momentum resolution agreement improves significantly for the proton in J/ψ→ppˉ.
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＋π π0, and the momentum resolution agreement improves significantly for the proton in J/ψ→ppˉ.
基金
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
