PoS - Proceedings of Science
Volume 444 - 38th International Cosmic Ray Conference (ICRC2023) - Gamma-ray Astronomy (GA)
Performance studies of the ALPACA experiment
Y. Yokoe*  on behalf of the ALPACA collaboration
Full text: pdf
Pre-published on: July 31, 2024
Published on: September 27, 2024
Abstract
In the southern sky, there are many very high energy Galactic gamma-ray sources which have the possibility of cosmic-ray acceleration up to the PeV energy region (PeVatrons). Sub-PeV gamma rays are produced by interactions between PeV cosmic rays accelerated by PeVatrons and interstellar matter. Andes Large-area PArticle detector for Cosmic-ray physics and Astronomy (ALPACA), consisting of an air shower array(83,000 $\rm{m^{2}}$) and underground muon detectors(3,600 $\rm{m^{2}}$) located at the Mt. Chacaltaya plateau(4,740 m), near La Paz, Bolivia, observes high energy cosmic rays and gamma rays with a wide field of view in the southern sky. The performances of ALPACA for gamma-ray source are estimated with a Monte Carlo simulation in this work. As a result, we expect to significantly detect the most promising PeVatron candidate, the Galactic Center.
DOI: https://doi.org/10.22323/1.444.0766
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