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Low transverse momentum track reconstruction based on the Hough transform for the BESIII drift chamber 被引量:1

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摘要 Background The multilayer drift chamber(MDC)is one of the key detectors at the BESIII,which is mainly responsible for the precise measurement of charged particles.High reconstruction efficiency of charged particles with a wide range of momentums is a basic requirement for the MDC reconstruction software.Purpose The purpose is to improve the tracking efficiency at the low transverse momentum region.Methods The Hough transform is a mathematical method that can map hits in a detector to parameter space to find tracks globally.In this paper,we have used it as the basis for developing a new tracking algorithm to find tracks in MDC.In addition,the drift distances of hits are considered when implementing Hough transform.Results This tracking algorithm is implemented in the BESIII offline software system,and its performance is checked using both Monte Carlo and data.The results show that this tracking method improves reconstruction efficiency at the low transverse momentum region.Conclusions The tracking algorithm based on Hough transform is proved to be beneficial for the MDC low transverse momentum tracking,and has been used in BESIII offline data reconstruction .
出处 《Radiation Detection Technology and Methods》 2018年第1期136-143,共8页 辐射探测技术与方法(英文)
基金 Funding was provided by National Key Basic Research Program of China under Contract No.2015CB856706 National Natural Science Foundation of China(NSFC)under Contracts Nos.11475208,11775245,11335009,U1632106,11575222 Chinese Academy of Sciences(CAS)President’s International Fellowship Initiative under Contract No.2018PM0004.
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