| 用PCA方法模拟光子鉴别 |
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| 引用本文： | 周静;,刘志毅,孟秋英,周书华.用PCA方法模拟光子鉴别[J].中国物理 C,2010,34(10):1632-1635. |
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| 作者姓名： | 周静; 刘志毅 孟秋英 周书华 |
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| 作者单位： | 中国原子能科学研究院; |
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| 基金项目： | Supported by National Natural Science Foundation of China （00121140488）, The authors wish to thank Prof. Sa Benhao for his help in using JPCIAE code and to Prof. Li Xiaomei in using ALIROOT. |
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| 摘 要： | 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%.
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| 关 键 词： | PCA方法 光子 模拟 JPCIAE 能量范围 主成分分析 代码生成 极值分布 |
| 收稿时间： | 2009-11-2 |
| 修稿时间： | 2010-3-17 |
Photon discrimination simulation with the PCA method |
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| ZHOU Jing,LIU Zhi-Yi MENG Qiu-Ying ZHOU Shu-Hua.Photon discrimination simulation with the PCA method[J].High Energy Physics and Nuclear Physics,2010,34(10):1632-1635. |
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| Authors: | ZHOU Jing LIU Zhi-Yi MENG Qiu-Ying ZHOU Shu-Hua |
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| Institution: | China Institute of Atomic Energy, Beijing 102413, China |
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| Abstract: | photon discrimination, PCA, ALICE, PHOS |
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| Keywords: | photon discrimination PCA ALICE PHOS |
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