Separation of γ/π⁰ showers at high energies

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• 作者：Grunhaus ; J. ; Kananov ; S.
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：1997
• 出版时间：June 1, 1997
• 年：1997
• 卷：391
• 期：2
• 页码：351-359
• 全文大小：567 K

文摘

We have designed and carried out simulation studies of a two-layer Shower Maximum Detector diagonally off-set (SMD-dos) optimized for the separation of π⁰ showers from γ showers in the 30-150 GeV energy range. For 90 % γ acceptance the SMD-dos yields π⁰ rejection efficiencies of 92 ± 4 % , 87 ± 4 % and 32 ± 2 % , respectively, for 30, 50 and 150 GeV incident energies. We find that the two-layer SMD-dos is superior to a conventional geometry two-layer Shower Maximum Detector (SMD), of equal granularity, by an average factor of s/glyphs/BQ1.GIF>1.5 over the 50-150 GeV energy range.