Performance studies of the ALPACA experiment

ALPACA Collaboration

Research output: Contribution to journalConference articlepeer-review

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 m2) and underground muon detectors(3,600 m2) 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.

Original languageEnglish
Article number766
JournalProceedings of Science
Volume444
DOIs
StatePublished - 27 Sep 2024
Event38th International Cosmic Ray Conference, ICRC 2023 - Nagoya, Japan
Duration: 26 Jul 20233 Aug 2023

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