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The shower shape of n,n,p,p,K+,π+ and photons,generated by JPCIAE code for 5.5 TeV/A 208Pb+208Pb collisions,incident on the ALICE photon spectrometer(PHOS),is analyzed with the principal component analysis(PCA) method.The efficiency dependence of purity for the photon discrimination is simulated for the deposited energy ranges 0.5-2 GeV,2-10 GeV,10-50 GeV and 50-100 GeV.The result shows that in the energy range of 0.5 to 100 GeV,the efficiency of the photon identification can reach 90% with purity of 90%. 相似文献
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ZHOU Dai-Cui WAN Ren-Zhuo MAO Ya-Xian Y.Schutz WANG Meng-Liang MA Ke WANG Ya-Ping YIN Zhong-Bao CAI Xu Y.Kharlov G.Conesa C.Roy 《中国物理C(英文版)》2010,34(9)
ALICE,A Large Ion Collider Experiment,is dedicated to study the QCD matter at extreme high temperature and density to understand the Quark Gluon Plasma (QGP) and phase transition.High-transversemomentum photons and neutral mesons from the initial hard scattering of partons can be measured with ALICE calorimeters,PHOS (PHOton Spectrometer) and EMCAL (ElectroMagnetic CALorimeter).Combing the additional central tracking detectors,the γ-jet and π 0-jet measurements thus can be accessed.These measurements offer us a sensitive tomography probe of the hot-dense medium generated in the heavy ion collisions.In this paper,high p T and photon physics is discussed and the ALICE calorimeters capabilities of high-transverse-momentum neutral mesons and γ-jet measurements are presented. 相似文献
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综述了CERN/LHC能区的大型重离子碰撞实验(ALICE)的现状, 并对ALICE实验中的光子谱仪(PHOS)的触发选判机制进行了模拟研究. 相似文献
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首先讨论了ALICE光子谱仪前端电子学的物理需求, 介绍了光子谱仪前端电子学测试系统. 采用该系统对光子谱仪前端电子学系统板(FEE)进行了检测, 检测表明现行设计的前端电子学系统板的物理性能已达到了ALICE实验的预期物理目标. 相似文献
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The shower shape of n, n^-, p, p^-, K^+, π^+ and photons, generated by JPCIAE code for 5.5 TeV/A ^208pb+^208pb collisions, incident on the ALICE photon spectrometer (PHOS), is analyzed with the principal component analysis (PCA) method. The efficiency dependence of purity for the photon discrimination is simulated for the deposited energy ranges 0.5-2 GeV, 2-10 GeV, 10-50 GeV and 50-100 GeV. The result shows that in the energy range of 0.5 to 100 GeV, the efficiency of the photon identification can reach 90% with purity of 90%. 相似文献
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ALICE,A Large Ion Collider Experiment,is dedicated to study the QCD matter at extreme high temperature and density to understand the Quark Gluon Plasma (QGP) and phase transition.High-transversemomentum photons and neutral mesons from the initial hard scattering of partons can be measured with ALICE calorimeters,PHOS (PHOton Spectrometer) and EMCAL (ElectroMagnetic CALorimeter).Combing the additional central tracking detectors,the γ-jet and π 0-jet measurements thus can be accessed.These measurements offer us a sensitive tomography probe of the hot-dense medium generated in the heavy ion collisions.In this paper,high p T and photon physics is discussed and the ALICE calorimeters capabilities of high-transverse-momentum neutral mesons and γ-jet measurements are presented. 相似文献
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