Event plane determination from the zero degree calorimeter at the cooling storage ring external-target experiment  

作　　者：Li-Ke Liu Hua Pei Ya-Ping Wang Biao Zhang Nu Xu Shu-Su Shi 

机构地区：[1]Key Laboratory of Quark and Lepton Physics(MOE)and Institute of Particle Physics,Central China Normal University,Wuhan 430079,China

出　　处：《Nuclear Science and Techniques》2023年第7期113-121,共9页核技术（英文）

基　　金：the National Key Research and Development Program of China(Nos.2022YFA1604900 and 2020YFE0202002);the National Natural Science Foundation of China(Nos.12175084,11890710,11890711,11927901);the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDB34030000);Fundamental Research Funds for Central Universities(No.CCNU220N003).

摘　　要：The Cooling Storage Ring external-target experiment(CEE)spectrometer is used to study the nuclear matter created in heavy-ion collisions at√sNN=2.1-2.4 GeV with the aim to reveal the quantum chromodynamics phase structure in the high-baryon-density region.Collective flow is considered an effective probe for evaluating the properties of media during high-energy nuclear collisions.One of the main functions of the zero-degree calorimeter(ZDC),a subdetector system in the CEE,is to determine the reaction plane in heavy-ion collisions.This step is crucial for measuring the collective flow and other reaction-plane-related analyses.In this paper,we illustrate the procedures for event plane determination using the ZDC.Finally,isospin-dependent quantum molecular dynamics model-based predictions of the rapidity dependence of the directed and elliptical flows for p,d,t,3He,and 4He,produced in 2.1 GeV U+U collisions,are presented.

关 键 词：QCD phase structure Heavy-ion collisions Collective flow Reaction plane Zero-degree calorimeter 

分 类 号：TL594[核科学技术—核技术及应用]