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 × 10 18 eV, for all zenith angles between 0 {ring operator} and 60 {ring operator} , 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. © 2009 Elsevier B.V. All rights reserved.
Documento: | Artículo |
Título: | Trigger and aperture of the surface detector array of the Pierre Auger Observatory |
Autor: | Multitudinario:475 |
Filiación: | Centro Atómico Bariloche, Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina Centro Atomico Constituyentes (Comision Nacional de Energia Atomica/CONICET/UTN-FRBA), Buenos Aires, Argentina Centro de Investigaciones en Láseres y Aplicaciones, CITEFA, CONICET, Argentina Departamento de Física, FCEyN, Universidad de Buenos Aires, Argentina IFLP, Universidad Nacional de La Plata, CONICET, La Plata, Argentina Instituto de Astronomía y Física del Espacio (CONICET), Buenos Aires, Argentina National Technological University, Faculty Mendoza (CONICET/CNEA), Mendoza, Argentina Pierre Auger Southern Observatory, Malargüe, Argentina Pierre Auger Southern Observatory and Comisión Nacional de Energía Atómica, Malargüe, Argentina University of Adelaide, Adelaide, SA, Australia Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, RJ, Brazil Pontifícia Universidade Católica, Rio de Janeiro, RJ, Brazil Universidade de São Paulo, Instituto de Física, São Carlos, SP, Brazil Universidade de São Paulo, Instituto de Física, São Paulo, SP, Brazil Universidade Estadual de Campinas, IFGW, Campinas, SP, Brazil Universidade Estadual de Feira de Santana, Brazil Universidade Estadual do Sudoeste da Bahia, Vitoria da Conquista, BA, Brazil Universidade Federal da Bahia, Salvador, BA, Brazil Universidade Federal, ABC, Santo André, SP, Brazil Universidade Federal do Rio de Janeiro, Instituto de Física, Rio de Janeiro, RJ, Brazil Rudjer Bošković Institute, 10000 Zagreb, Croatia Charles University, Faculty of Mathematics and Physics, Institute of Particle and Nuclear Physics, Prague, Czech Republic Institute of Physics, the Academy of Sciences of the Czech Republic, Prague, Czech Republic Palacký University, Olomouc, Czech Republic Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris 11, CNRS-IN2P3, Orsay, France Laboratoire AstroParticule et Cosmologie (APC), Université Paris 7, CNRS-IN2P3, Paris, France Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris 11, CNRS-IN2P3, Orsay, France Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), Universités Paris 6 et Paris 7, CNRS-IN2P3, Paris, France Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier, INPG, Grenoble, France SUBATECH, CNRS-IN2P3, Nantes, France Bergische Universität Wuppertal, Wuppertal, Germany Karlsruhe Institute of Technology - Campus North, Institut für Kernphysik, Karlsruhe, Germany Karlsruhe Institute of Technology - Campus North, Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany Karlsruhe Institute of Technology - Campus South, Institut für Experimentelle Kernphysik (IEKP), Karlsruhe, Germany Max-Planck-Institut für Radioastronomie, Bonn, Germany RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany Universität Hamburg, Hamburg, Germany Universität Siegen, Siegen, Germany Dipartimento di Fisica dell'Università, INFN, Genova, Italy Università dell'Aquila, INFN, L'Aquila, Italy Università di Milano, Sezione INFN, Milan, Italy Dipartimento di Fisica dell'Università del Salento, Sezione INFN, Lecce, Italy Università di Napoli Federico II, Sezione INFN, Napoli, Italy Università di Roma II Tor Vergata, Sezione INFN, Roma, Italy Università di Catania, Sezione INFN, Catania, Italy Università di Torino, Sezione INFN, Torino, Italy Dipartimento di Ingegneria dell'Innovazione dell'Università del Salento, Sezione INFN, Lecce, Italy Gran Sasso Center for Astroparticle Physics, Italy Istituto di Astrofisica Spaziale e Fisica Cosmica di Palermo (INAF), Palermo, Italy Istituto di Fisica dello Spazio Interplanetario (INAF), Università di Torino, Sezione INFN, Torino, Italy INFN, Laboratori Nazionali del Gran Sasso, Assergi, L'Aquila, Italy Università di Palermo, Sezione INFN, Catania, Italy Benemérita Universidad Autónoma de Puebla, Puebla, Mexico Centro de Investigación y de Estudios Avanzados, IPN (CINVESTAV), México, D.F., Mexico Universidad Michoacana de San Nicolas de Hidalgo, Morelia, Michoacan, Mexico Universidad Nacional Autonoma de Mexico, Mexico, D.F., Mexico IMAPP, Radboud University, Nijmegen, Netherlands Kernfysisch Versneller Instituut, University of Groningen, Groningen, Netherlands NIKHEF, Amsterdam, Netherlands ASTRON, Dwingeloo, Netherlands Institute of Nuclear Physics PAN, Krakow, Poland University of łódź, łódź, Poland LIP, Instituto Superior Técnico, Lisboa, Portugal J. Stefan Institute, Ljubljana, Slovenia Laboratory for Astroparticle Physics, University of Nova Gorica, Slovenia Instituto de Física Corpuscular, CSIC-Universitat de València, Valencia, Spain Universidad Complutense de Madrid, Madrid, Spain Universidad de Alcalá, Alcalá de Henares, Madrid, Spain Universidad de Granada, C.A.F.P.E., Granada, Spain Universidad de Santiago de Compostela, Spain Rudolf Peierls Centre for Theoretical Physics, University of Oxford, Oxford, United Kingdom School of Physics and Astronomy, University of Leeds, United Kingdom Argonne National Laboratory, Argonne, IL, United States Case Western Reserve University, Cleveland, OH, United States Colorado School of Mines, Golden, CO, United States Colorado State University, Fort Collins, CO, United States Colorado State University, Pueblo, CO, United States Fermilab, Batavia, IL, United States Louisiana State University, Baton Rouge, LA, United States Michigan Technological University, Houghton, MI, United States New York University, New York, NY, United States Northeastern University, Boston, MA, United States Ohio State University, Columbus, OH, United States Pennsylvania State University, University Park, PA, United States Southern University, Baton Rouge, LA, United States University of California, Los Angeles, CA, United States University of Chicago, Enrico Fermi Institute, Chicago, IL, United States University of Hawaii, Honolulu, HI, United States University of Nebraska, Lincoln, NE, United States University of New Mexico, Albuquerque, NM, United States University of Wisconsin, Madison, WI, United States University of Wisconsin, Milwaukee, WI, United States Institute for Nuclear Science and Technology (INST), Hanoi, Viet Nam |
Palabras clave: | Auger Observatory; Exposure; Extensive air showers; Trigger; Ultra high energy cosmic rays; Augers; Cosmology; Observatories; Particle detectors; Auger observatory; Exposure; Extensive air showers; Trigger; Ultra high-energy cosmic rays; Cosmic rays |
Año: | 2010 |
Volumen: | 613 |
Número: | 1 |
Página de inicio: | 29 |
Página de fin: | 39 |
DOI: | http://dx.doi.org/10.1016/j.nima.2009.11.018 |
Título revista: | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
Título revista abreviado: | Nucl Instrum Methods Phys Res Sect A |
ISSN: | 01689002 |
CODEN: | NIMAE |
Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01689002_v613_n1_p29_Multitudinario |