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- Title
A technique for selecting γ rays with energies above 50 GeV from the background of charged particles in the GAMMA-400 space-based γ-ray telescope.
- Authors
Kheymits, M.; Galper, A.; Arkhangelskaja, I.; Arkhangelskiy, A.; Gusakov, Yu.; Zverev, V.; Kadilin, V.; Kaplin, V.; Leonov, A.; Naumov, P.; Runtso, M.; Suchkov, S.; Topchiev, N.; Yurkin, Yu.
- Abstract
The task of selecting neutral γ rays from the background of charged particle fluxes, which arises in investigation of high-energy (>50 GeV) cosmic rays, is complicated by the presence of the backsplash effect. The backsplash is composed of a great number of low-energy (~1 MeV) particles produced in an electromagnetic shower being developed in the calorimeter of the γ-ray telescope. A technique of charged particle rejection using an anticoincidence system has been developed. A method for discriminating events of charged particle detection from γ-ray detection events accompanied by the backsplash phenomenon is proposed. This method is based on the difference of the signals in time and makes it possible to maintain a high detection efficiency even for high-energy γ rays.
- Subjects
GAMMA ray telescopes; COSMIC rays; SIGNAL detection; CHARGED particle accelerators; ELECTROMAGNETIC devices; PHYSICS research
- Publication
Instruments & Experimental Techniques, 2016, Vol 59, Issue 4, p508
- ISSN
0020-4412
- Publication type
Article
- DOI
10.1134/S0020441216030180