Characteristics of the Transtion Curves of Showers and Discrimination of γ-Rays and Hadrons in Iron Emulsion Chambers

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JI Xiao-Bin, FU Yu, XUE Liang, ZHANG Xue-Yao, LI Jie, LI Jin-Yu, ZHANG Nai-Jian, He Mao, REN Jing-Ru and LU Sui-Ling. Characteristics of the Transtion Curves of Showers and Discrimination of γ-Rays and Hadrons in Iron Emulsion Chambers[J]. Chinese Physics C, 2001, 25(10): 1012-1016.
JI Xiao-Bin, FU Yu, XUE Liang, ZHANG Xue-Yao, LI Jie, LI Jin-Yu, ZHANG Nai-Jian, He Mao, REN Jing-Ru and LU Sui-Ling. Characteristics of the Transtion Curves of Showers and Discrimination of γ-Rays and Hadrons in Iron Emulsion Chambers[J]. Chinese Physics C, 2001, 25(10): 1012-1016. shu
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Received: 2001-01-16
Revised: 1900-01-01
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Characteristics of the Transtion Curves of Showers and Discrimination of γ-Rays and Hadrons in Iron Emulsion Chambers

    Corresponding author: JI Xiao-Bin,
  • Department of Physics, Shandong University, Jinan 250100, China2 Intitute of High Energy Phyics, CAS, Beijing 100039, China

Abstract: The GEANT3 code, a general software for detector simulations widely used in the experi- ments of particle physics, is introduced to the Monte Carlo simulation of iron emulsion chambers. Some haracteristics of transition curves of cascade shower and their FWHM (Full Width of Half Maximum) are studied. The probability of discriaminating hadrons from gamma rays using the FWHM distributions for the shower events with starting depth Δt<6c. u. is discussed and an efficient joint criterion of discriminating hadrons from γ-rays in iron emulsion chambers is obtained.

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