Background rejection using image residuals from large telescopes in imaging atmospheric Cherenkov telescope arrays

Olivera-Nieto L, Ren HX, Mitchell A, Marandon V, Hinton JA (2022)

Publication Type: Journal article

Publication year: 2022

Journal

European Physical Journal C: Particles and Fields Springer Verlag

Book Volume: 82

Article Number: 1118

Journal Issue: 12

DOI: 10.1140/epjc/s10052-022-11067-5

Abstract

Identification of Cherenkov light generated by muons has been suggested as a promising way to dramatically improve the background rejection power of Imaging Atmospheric Cherenkov Telescope (IACT) arrays at high energies. However, muon identification remains a challenging task, for which efficient algorithms are still being developed. We present an approach in which, rather than identifying Cherenkov light from muons, we simply consider the presence of Cherenkov light other than the main shower image in IACTs with large mirror area. We show that in the case of the H.E.S.S. array of five telescopes this approach results in background rejection improvements at all energies above 1 TeV. In particular, the rejection power can be improved by a factor ∼3–4 at energies above 20 TeV while keeping ∼90% of the original gamma-ray efficiency.

Authors with CRIS profile

Alison Mitchell Lehrstuhl für Physik

Involved external institutions

Max-Planck-Institut für Kernphysik (MPIK) / Max Planck Institute for Nuclear Physics

Germany (DE)

How to cite

APA:

Olivera-Nieto, L., Ren, H.X., Mitchell, A., Marandon, V., & Hinton, J.A. (2022). Background rejection using image residuals from large telescopes in imaging atmospheric Cherenkov telescope arrays. European Physical Journal C: Particles and Fields, 82(12). https://dx.doi.org/10.1140/epjc/s10052-022-11067-5

MLA:

Olivera-Nieto, L., et al. "Background rejection using image residuals from large telescopes in imaging atmospheric Cherenkov telescope arrays." European Physical Journal C: Particles and Fields 82.12 (2022).

BibTeX: Download