Method for reconstructing the gamma-ray arrival direction in the converter + calorimeter system

A. M. Galper, S. V. Borisov, V. G. Zverev, C. I. Suchkov, N. P. Topchiev, M. O. Farber, M. I. Fradkin, Yu T. Yurkin

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

When designing devices of modern gamma astronomy, one of the most important problems is achieving the maximum possible angular resolution. This study is devoted to the method for reconstructing the arrival direction of primary gamma-rays with energies Eγ > 10 GeV in the GAMMA-400 satellite experiment. By the example of the GAMMA-400 gamma telescope, the possibility of improving the angular resolution of gamma telescopes incorporating a "converter + calorimeter" system is shown. The dependence of the angular resolution on the step of silicon strips used to determine the coordinates of incident particles in the converter and calorimeter and the distance between the converter and calorimeter is analyzed.

Original languageEnglish
Pages (from-to)191-197
Number of pages7
JournalBulletin of the Lebedev Physics Institute
Volume38
Issue number7
DOIs
StatePublished - Jul 2011
Externally publishedYes

Bibliographical note

Funding Information:
The GAMMA-400 will be installed at the “Navigator” spacecraft platform. This experiment is performed by the Lebedev Physical Institute of the Russian Academy of Sciences (Moscow) in collaboration with the National Research Nuclear University "MEPhI" (Moscow), National Institute of Nuclear Physics (Italy), All-Russian Research Institute of Electromechanics (Moscow), Institute of High-Energy Physics (Protvino, Moscow oblast), Ioffe Physical Technical Institute (St.Petersburg), and Space Research Institute of the Russian Academy of Sciences (Moscow).

Keywords

  • gamma-ray arrival direction
  • gamma-telescope

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