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Arqueros Martínez, Fernando and Blanco Ramos, Francisco and García Pinto, Diego and Ortiz Ramis, Montserrat and Rosado Vélez, Jaime and Vázquez Peñas, José Ramón (2010) Trigger and aperture of the surface detector array of the Pierre Auger Observatory. Nuclear instruments & methods in physics research. Section A, Accelerators spectrometers detectors and associated equipment, 613 (1). pp. 29-39. ISSN 0168-9002
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Official URL: http://dx.doi.org/10.1016/j.nima.2009.11.018
Abstract
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. (C) 2009 Elsevier B.V. All rights reserved.
Item Type: | Article |
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Additional Information: | & 2009 Elsevier B.V. |
Uncontrolled Keywords: | Air showers; Particles. |
Subjects: | Sciences > Physics > Nuclear physics |
ID Code: | 39405 |
Deposited On: | 27 Nov 2018 09:01 |
Last Modified: | 10 Dec 2018 14:58 |
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