TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhysProc.13.008
TI  - The ALPACA experiment: The project of the first sub-PeV gamma-ray observation in the southern sky
PY  - 2023/09/28
UR  - https://www.scipost.org/SciPostPhysProc.13.008
JF  - SciPost Physics Proceedings
JA  - SciPost Phys. Proc.
VL  - 
IS  - 13
SP  - 008
A1  - Kawashima, Teruyoshi
AB  - The ALPACA experiment is a project aiming to observe sub-PeV gamma rays for the first time in the southern hemisphere. The main goal of ALPACA is to identify PeVatrons, the accelerators of Galactic PeV cosmic rays, by observing sub-PeV pion-decay gamma rays generated in interactions between PeV cosmic rays and the interstellar medium. This new air shower experiment is located at an altitude of 4,740 m above sea level in the middle of Mt. Chacaltaya in Bolivia. The air shower array consists of 401 scintillation counters covering an 83,000 m$^2$ surface area. In addition, a water-Cherenkov-type muon detector array with an area of 3,700 m$^2$ is installed to discriminate gamma rays from background cosmic rays. The prototype array ALPAQUITA will start data taking in 2022 and will extend to ALPACA in 2024. We report on a general introduction to ALPACA, the progress of the project, and the sensitivity to sub-PeV gamma rays.
ER  -

@Article{10.21468/SciPostPhysProc.13.008,
	title={{The ALPACA experiment: The project of the first sub-PeV gamma-ray observation in the southern sky}},
	author={Teruyoshi Kawashima for the ALPACA Collaboration},
	journal={SciPost Phys. Proc.},
	pages={008},
	year={2023},
	publisher={SciPost},
	doi={10.21468/SciPostPhysProc.13.008},
	url={https://scipost.org/10.21468/SciPostPhysProc.13.008},
}