INVESTIGADORES
HANSEN Patricia Maria
artículos
Título:
Trigger and Aperture of the Surface Detector Array of the Pierre Auger Observatory
Autor/es:
THE PIERRE AUGER COLLABORATION (P. HANSEN PERTENECE A LA COLABORACION-ORDEN ALFABETICO)
Revista:
NUCLEAR INSTRUMENTS AND METHODS IN PHYSICS RESEARCH A - ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPAMENT
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Año: 2010 p. 29 - 39
ISSN:
0168-9002
Resumen:
The surface detector array of the Pierre Auger Observatory consists of 1600 water-Cherenkov detectors, for the study of extensive airshowers (EAS) generated by ultra-high-energy cosmic rays. We describethe trigger hierarchy, from the identification of candidate showers at the level of a single detector, amongst a large background (mainly random single cosmic ray muons), up to the selection of real events and the rejection of random coincidences. Such trigger makes the surface detector array fully efficient for the detection of EAS with energy above 3 x 10^18 eV, for all zenith angles between 0 and 60 degree, independently of the position of the impact point and of the mass of the primary particle. In these range of energies and angles, the exposure of the surface array can be determined purely on the basis of the geometrical acceptance.