Track Reconstruction in a High-Density Environment with ALICE

被引：5

作者：

Arslandok, Mesut ^{[1
,2
,3
]}

Hellbaer, Ernst ^{[4
]}

Ivanov, Marian ^{[4
]}

Muenzer, Robert Helmut ^{[5
]}

Wiechula, Jens ^{[5
]}

机构：

[1] European Org Nucl Res CERN, CH-1211 Geneva, Switzerland

[2] Yale Univ, Phys Dept, Wright Lab, New Haven, CT 06520 USA

[3] Heidelberg Univ, Phys Inst, D-69120 Heidelberg, Germany

[4] GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany

[5] Goethe Univ Frankfurt, Inst Kernphys, D-60438 Frankfurt, Germany

来源：

PARTICLES | 2022年 / 5卷 / 01期

基金：

美国能源部;

关键词：

heavy-ion collisions; tracking; Time Projection Chamber (TPC); space charge distortions; event pileup; interactive visualization; PERFORMANCE;

D O I：

10.3390/particles5010008

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

ALICE is the dedicated heavy-ion experiment at the CERN Large Hadron Collider (LHC). Its main tracking and particle-identification detector is a large volume Time Projection Chamber (TPC). The TPC has been designed to perform well in the high-track density environment created in high-energy heavy-ion collisions. In this proceeding, we describe the track reconstruction procedure in ALICE. In particular, we focus on the two main challenges that were faced during the Run 2 data-taking period (2015-2018) of the LHC, which were the baseline fluctuations and the local space charge distortions in the TPC. We present the corresponding solutions in detail and describe the software tools that allowed us to circumvent these challenges.

引用

页码：84 / 95

页数：12

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