Title

Calibration of the surface array of the Pierre Auger Observatory

Authors

X. Bertou, Centro Atomico Bariloche
P. S. Allison, The Ohio State University
C. Bonifazi, Centro Brasileiro de Pesquisas Físicas
P. Bauleo, Colorado State University
C. M. Grunfeld, Facultad de Ciencias Exactas, Universidad Nacional de La Plata
M. Aglietta, Istituto Nazionale di Fisica Nucleare, Sezione di Torino
F. Arneodo, Laboratori Nazionali del Gran Sasso
D. Barnhill, University of California, Los Angeles
J. J. Beatty, The Ohio State University
N. G. Busca, The University of Chicago
A. Creusot, Institut de Physique Nucléaire Orsay
D. Dornic, Institut de Physique Nucléaire Orsay
A. Etchegoyen, Consejo Nacional de Investigaciones Científicas y Técnicas
A. Filevitch, Consejo Nacional de Investigaciones Científicas y Técnicas
P. L. Ghia, Istituto Nazionale di Fisica Nucleare, Sezione di Torino
I. Lhenry-Yvon, Institut de Physique Nucléaire Orsay
M. C. Medina, Consejo Nacional de Investigaciones Científicas y Técnicas
E. Moreno, Benemerita Universidad Autonoma de Puebla
D. Nitz, Michigan Technological University
T. Ohnuki, University of California, Los Angeles
S. Ranchon, Laboratoire de l'Accélérateur Linéaire
H. Salazar, Benemerita Universidad Autonoma de Puebla
T. Suomijärvi, Institut de Physique Nucléaire Orsay
D. Supanitsky, Consejo Nacional de Investigaciones Científicas y Técnicas
A. Tripathi, University of California, Los Angeles
M. Urban, Laboratoire de l'Accélérateur Linéaire
L. Villasenor, Universidad Michoacana de San Nicolás de Hidalgo

Document Type

Article

Publication Date

12-1-2006

Abstract

The Pierre Auger Observatory is designed to study cosmic rays of the highest energies (> 1019 eV). The ground array of the Observatory will consist of 1600 water Cherenkov detectors deployed over 3000 km2. The remoteness and large number of detectors require a robust, automatic self-calibration procedure. It relies on the measurement of the average charge collected by a photomultiplier tube from the Cherenkov light produced by a vertical and central through-going muon, determined to 5-10% at the detector via a novel rate-based technique and to 3% precision through analysis of histograms of the charge distribution. The parameters needed for the calibration are measured every minute, allowing for an accurate determination of the signals recorded from extensive air showers produced by primary cosmic rays. The method also enables stable and uniform triggering conditions to be achieved. © 2006 Elsevier B.V. All rights reserved.

Publication Title

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

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