Photon discrimination simulation with the PCA method

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 discriminati...

Full description

Saved in:
Bibliographic Details
Published inChinese physics C Vol. 34; no. 10; pp. 1632 - 1635
Main Author 周静 刘志毅 孟秋英 周书华
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.10.2010
China Institute of Atomic Energy, Beijing 102413, China
Subjects
JPCIAE
PCA方法
主成分分析
代码生成
极值分布
能量范围
PHOS
ALICE
photon discrimination
PCA
Online AccessGet full text

Cover

More Information
Summary: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%.
Bibliography:O572.31
11-5641/O4
TQ245.12
photon discrimination, PCA, ALICE, PHOS
ISSN:1674-1137
0254-3052
2058-6132
DOI:10.1088/1674-1137/34/10/015