期刊
PHYSICS OF ATOMIC NUCLEI
卷 83, 期 2, 页码 252-257出版社
PLEIADES PUBLISHING INC
DOI: 10.1134/S1063778820020039
关键词
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资金
- National Research Nuclear University [02, a03.21.0005]
- MEPhI in the framework of the Russian Academic Excellence Project
The GAMMA-400 gamma-ray telescope is planned for the launch at the end of 2026 on the Navigator service platform designed by Lavochkin Association on an elliptical orbit with following initial parameters: an apogee similar to 300 000, a perigee similar to 500 km, a rotation period similar to 7 days and inclination of 51.4 degrees. The apparatus is expected to operate for more than 5 years, reaching an unprecedented sensitivity for the search of dark matter signatures and the study of the unresolved and so far unidentified gamma-ray sources. The segmented anticoincidence counters surround the converter-tracker and calorimeter of the telescope with the purpose of vetoing to assure a clean track reconstruction and charged particle background suppression. The anticoincidence detector prototype based on long BC-408 scintillator with silicon photomultipliers readout was tested using 300-MeV positron beam of synchrotron C-25P PAKHRA of Lebedev Physical Institute. The measurement setup, design concepts for the prototype detector together with test results are discussed.
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