Speaker
Description
Aiming at exploring the southern gamma-ray sky in the highest energy range, we are proceeding with the ALPACA project. Also, as the prototype experiment of ALPACA, the ALPAQUITA experiment is in preparation, and its detector is now under construction. ALPAQUITA consists of a surface air shower array and an underground water Cherenkov muon detector. To get the most out of ALPAQUITA, we work on a detailed Monte Carlo simulation and evaluate the ALPAQUITA performance. As a result, we find that ALPAQUITA achieves an angular resolution of ≃0.2° and an energy resolution of ≃25% for gamma rays in the 100 TeV range.
Moreover, using the muon detector alongside the surface array, the ALPAQUITA sensitivity to gamma rays is enhanced by a factor of ≃10 in the 100 TeV range compared to using only the surface array. The aforementioned enables us to detect several southern gamma-ray sources with ALPAQUITA beyond 100 TeV in one calendar year observation.
This presentation comprehensively introduces the ALPAQUITA performance and current observational situation of gamma-ray sources detectable with ALPAQUITA.
Keywords
southern gamma-ray astronomy; VHE gamma rays; international project;
| Subcategory | Experimental Methods & Instrumentation |
|---|---|
| other Collaboration | the ALPACA collaboration |
