Study of the Gamma-ray performance of the GAMMA-400 Calorimeter

P Cumani,A M Galper,V Bonvicini,N P Topchiev,O Adriani,R L Aptekar,Andrea Argan,I V Arkhangelskaja,A I Arkhangelskiy,Lars Bergstrom,E Berti,G Bigongiari,S G Bobkov,M Boezio,E A Bogomolov, S Bonechi,M Bongi,S Bottai,Andrea Bulgarelli,G Castellini,P W Cattaneo,G L Dedenko,C De Donato, V A Dogiel, I Donnarumma,V Fioretti,M S Gorbunov, Y Gusakov,B I Hnatyk,V V Kadilin,V Kaplin,A A Kaplun,M D Kheymits,V E Korepanov,J Larsson,A Leonov,Vitaly Loginov, F Longo, P Maestro, P S Marrocchesi, A L Menshenin,V V Mikhailov,E Mocchiutti,A A Moiseev,N Mori,I V Moskalenko, P Yu Naumov, F Palma,P Papini,M J Pearce,G Piano,P Picozza,A V Popov, A Rappoldi,S B Ricciarini,M F Runtso,F Ryde,Silvio P Sabatini,R Sarkar, O V Serdin,R Sparvoli,P Spillantini,S Suchkov,Marco Tavani, A A Taraskin, A Tiberio, E M Tyurin,M Ulanov,A Vacchi, E Vannuccini, G I Vasilyev,Valeria Vittorini, Y T Yurkin,N Zampa,V N Zirakashvili,V G Zverev

mag（2015）

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摘要

GAMMA-400 is a new space mission, designed as a dual experiment, capable to study both high energy gamma rays (from $\sim$100 MeV to few TeV) and cosmic rays (electrons up to 20 TeV and nuclei up to $\sim$10$^{15}$ eV). The full simulation framework of GAMMA-400 is based on the Geant4 toolkit. The details of the gamma-ray reconstruction pipeline in the pre-shower and calorimeter will be outlined. The performance of GAMMA-400 (PSF, effective area) have been obtained using this framework. The most updated results on them will be shown.

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