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
| Autor: | Yu. V. Gusakov, M. D. Kheymits, V. G. Zverev, V. V. Kadilin, S. I. Suchkov, N. P. Topchiev, I. V. Arkhangelskaja, Yu. T. Yurkin, P. Yu. Naumov, Vladimir Kaplin, A. M. Galper, A.I. Arkhangelskiy, M. F. Runtso, Alexey Leonov |
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| Rok vydání: | 2016 |
| Předmět: |
Physics
Calorimeter (particle physics) 010308 nuclear & particles physics Astrophysics::High Energy Astrophysical Phenomena Cosmic ray Space (mathematics) 01 natural sciences Charged particle law.invention Nuclear physics Telescope law 0103 physical sciences 010303 astronomy & astrophysics Instrumentation |
| Zdroj: | Instruments and Experimental Techniques. 59:508-512 |
| ISSN: | 1608-3180 0020-4412 |
| DOI: | 10.1134/s0020441216030180 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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