Gamma/hadron discrimination using a small-WCD with four PMTs

the SWGO Collaboration

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)


The Southern Wide-field Gamma-ray Observatory (SWGO) is the next-generation gamma-ray observatory, currently in an R&D phase. The experiment is expected to have a large array of water Cherenkov detectors (WCD) placed at a high elevation (> 4.4 km a.s.l.) in South America. Here we present a WCD concept with reduced surface area and height of stations comprising four PMTs at the bottom. We show that it is possible to reach an excellent gamma/hadron discrimination by analysing the data gathered by this station with machine learning techniques. Such performance can be achieved by analysing the shower patterns at the ground or through the PMTs signal time structure to tag muons. Moreover, it is shown that the station's performance does not depend on the array configuration (dense or sparse) nor on the shower inclination (θ< 40). Such a concept reduces the cost associated with the transport of massive amounts of water to high elevation sites while keeping a high physics performance. Therefore, it could be a good candidate station for SWGO, enabling to reach good sensitivities from low energies (∼ 100 GeV) up to the PeV region, covering large ground surface areas (few square km).

Original languageEnglish
Title of host publicationGamma/hadron discrimination using a small-WCD with four PMTs
Publication statusPublished - 18 Mar 2022
Event37th International Cosmic Ray Conference, ICRC 2021 - Virtual, Berlin, Germany
Duration: 12 Jul 202123 Jul 2021

Publication series

NameProceedings of Science
PublisherSissa Medialab Srl


Conference37th International Cosmic Ray Conference, ICRC 2021
CityVirtual, Berlin

Bibliographical note

Publisher Copyright:
© 2022 Sissa Medialab Srl. All rights reserved.

All Science Journal Classification (ASJC) codes

  • General


Dive into the research topics of 'Gamma/hadron discrimination using a small-WCD with four PMTs'. Together they form a unique fingerprint.

Cite this