TY  - JOUR
AU  - Pierre Auger Collaboration (Abraham, J. et al
AU  - Pastor, S.
PY  - 2010
DA  - 2010//
TI  - Trigger and aperture of the surface detector array of the Pierre Auger Observatory
T2  - Nucl. Instrum. Methods Phys. Res. A
JO  - Nuclear Instruments & Methods in Physics Research A
SP  - 29
EP  - 39
VL  - 613
IS  - 1
PB  - Elsevier Science Bv
KW  - Ultra high energy cosmic rays
KW  - Auger Observatory
KW  - Extensive air showers
KW  - Trigger
KW  - Exposure
AB  - The surface detector array of the Pierre Auger Observatory consists of 1600 water-Cherenkov detectors, for the study of extensive air showers (EAS) generated by ultra-high-energy cosmic rays. We describe the 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 degrees and 60 degrees, 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.
SN  - 0168-9002
UR  - http://arxiv.org/abs/1111.6764
UR  - https://doi.org/10.1016/j.nima.2009.11.018
DO  - 10.1016/j.nima.2009.11.018
LA  - English
N1  - ISI:000274772800005
ID  - PierreAugerCollaborationAbraham+Pastor2010
ER  -