Three dimensional parametrization of electromagnetic shower in Alpha Magnetic Spectrometer Ⅱ ECAL

• 作 者: 陶军全 杨民 陈国明 李祖豪 李新乔 唐志成 张震 王健 吕雨生 陈和生 陈刚
• 机 构: Key Laboratory of Particle Astrophysics Institute of High Energy Physics,CAS,Beijing 100049,China,Ke
• 出 处: 中国物理C
• 发表日期: 2008年03期
• 关键词: Alpha verified calorimeter leakage fitted fitting longitudinal minimization read

We develop an empirical formula to parameterize the 3-dimension(3D)distribution of electromag- netic showers in the Alpha Magnetic SpectrometerⅡelectromagnetic calorimeter(ECAL).The formula was verified by ECAL test beam data in 2002 and found to perform well.The distribution of electron showers in the ECAL are well described by the formula,which has parameters that allow one to determine the 3D shape of electromagnetic showers in the ECAL.We use this formula to correct for lateral energy leakage and dead channels in the ECAL;good results are obtained.

We develop an empirical formula to parameterize the 3-dimension (3D) distribution of electromagnettic showers in the Alpha Magnetic Spectrometer II electromagnetic calorimeter (ECAL). The formula was verified by ECAL test beam data in 2002 and found to perform well. electron showers in the ECAL are well described by the formula, which has that that one allow one to determine the 3D shape of electromagnetic showers in the ECAL. We use this formula to correct for lateral energy leakage and dead channels in the ECAL; good results are obtained.