The trigger system of the Pierre Auger Surface Detector: operation, efficiency and stability

D. Allard; E. Armengaud; I. Allekotte; P. Allison; J. Aublin; M. Ave; P. Bauleo; J. Beatty; T. Beau; X. Bertou; P. Billoir; C. Bonifazi; A. Chou; J. Chye; S. Dagoret-Campagne; A. Dorofeev; P. L. Ghia; M. Gomez Berisso; A. Gorgi; J. C. Hamilton; J. Harton; R. Knapik; C. Lachaud; I. Lhenry-Yvon; A. Letessier-Selvon; J. Matthews; C. Medina; R. Meyhandan; G. Navarra; D. Nitz; E. Parizot; B. Revenu; Z. Szadkowski; T. Yamamoto

arXiv · astro-ph/0510320

The trigger system of the Pierre Auger Surface Detector: operation, efficiency and stability

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Abstract

The trigger system of the Surface Detector (SD) of the Pierre Auger Observatory is described, from the identification of candidate showers ($E>1$ EeV) at the level of a single station, among a huge background (mainly single muons), up to the selection of real events and the rejection of random coincidences at a higher central trigger level (including the reconstruction accuracy). Efficiency of a single station trigger is evaluated using real data , and the high performance of event selection hierarchy will be demonstrated.

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D. Allard, E. Armengaud, I. Allekotte, P. Allison, J. Aublin, M. Ave, P. Bauleo, J. Beatty, T. Beau, X. Bertou, P. Billoir, C. Bonifazi, A. Chou, J. Chye, S. Dagoret-Campagne, A. Dorofeev, P. L. Ghia, M. Gomez Berisso, A. Gorgi, J. C. Hamilton, J. Harton, R. Knapik, C. Lachaud, I. Lhenry-Yvon, A. Letessier-Selvon, J. Matthews, C. Medina, R. Meyhandan, G. Navarra, D. Nitz, E. Parizot, B. Revenu, Z. Szadkowski, T. Yamamoto. 2005-10-11. The trigger system of the Pierre Auger Surface Detector: operation, efficiency and stability. https://arxiv.org/abs/astro-ph/0510320

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