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The Use of the Signal at an Optimal Distance from the Shower Core as a Surrogate for Shower Size

Luce, Q. 1; Schmidt, D. 2; Deligny, O.; Lhenry-Yvon, I.; Roth, M. ORCID iD icon 1; Watson, A. A.
1 Institut für Astroteilchenphysik (IAP), Karlsruher Institut für Technologie (KIT)
2 Institut für Experimentelle Teilchenphysik (ETP), Karlsruher Institut für Technologie (KIT)

Abstract:

When analysing data from air-shower arrays, it has become common practice to use the signal at a considerable distance from the shower axis (𝑟_opt) as a surrogate for the size of the shower. This
signal, 𝑆(𝑟_opt), can then be related to the primary energy in a variety of ways. After a brief review of the reasons behind the introduction of 𝑟opt laid out in a seminal paper by Hillas in 1969, it will be shown that 𝑟_opt, is a more effective tool when detectors are laid out on a triangular grid than when detectors are deployed on a square grid. This result may have implications for explaining the differences between the flux observed by the Auger and Telescope collaborations above 10 EeV and should be kept in mind when designing new shower arrays.


Verlagsausgabe §
DOI: 10.5445/IR/1000167206
Veröffentlicht am 17.01.2024
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Astroteilchenphysik (IAP)
Institut für Experimentelle Teilchenphysik (ETP)
Publikationstyp Proceedingsbeitrag
Publikationsdatum 14.12.2023
Sprache Englisch
Identifikator ISSN: 1824-8039
KITopen-ID: 1000167206
Erschienen in Proceedings of 27th European Cosmic Ray Symposium — PoS(ECRS)
Veranstaltung 27th European Cosmic Ray Symposium (ECRS 2022), Nimwegen, Niederlande, 25.07.2022 – 29.07.2022
Verlag Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Seiten Art.-Nr.: 078
Serie Pos proceedings of science ; 423
Vorab online veröffentlicht am 15.02.2023
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Scopus
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