Observing muon decays in water Cherenkov detectors at the Pierre Auger Observatory

P. Allison, F. Arneodo, X. Bertou, N. Busca, P. L. Ghia, C. Medina, G. Navarra, L. Nellen, H. Salazar Ibarguen, S. Ranchon, M. Urban, L. Villasenor

Research output: Contribution to conferencePaperpeer-review

Abstract

Muons decaying in the water volume of a Cherenkov detector of the Pierre Auger Observatory provide a useful calibration point at low energy. Using the digitized waveform continuously recorded by the electronics of each tank, we have devised a simple method to extract the charge spectrum of the Michel electrons, whose typical signal is about 1/8 of a crossing vertical muon. This procedure, moreover, allows continuous monitoring of the detector operation and of its water level. We have checked the procedure with high statistics on a test tank at the Observatory base and applied with success on the whole array.

Original languageEnglish (US)
Pages299-302
Number of pages4
StatePublished - 2005
Event29th International Cosmic Ray Conference, ICRC 2005 - Pune, India
Duration: Aug 3 2005Aug 10 2005

Other

Other29th International Cosmic Ray Conference, ICRC 2005
CountryIndia
CityPune
Period8/3/058/10/05

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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