Investigación

Azimuthal signal variations in the engineering array of the Pierre Auger Observatory

K.S. Caballero–Mora^a,*, L. Nellen^b and J.F. Valdés–Galicia^c

ª Forschungszentrum Karlsruhe.

^b Instituto de Ciencias Nucleares, UNAM, e–mail: lukas@nucleares.unam.mx

^c Instituto de Geofísica, UNAM.

Recibido el 5 de mayo de 2008
Aceptado el 22 de mayo de 2008

Abstract

We study the azimuthal variation of the signal in selected tanks in the engineering array of the Pierre Auger Observatory. We fi a parametrization to the observed variations. We also note that the observation of the signal variations can be used to detect mistakes in the wireing from the PMTs to the control board.

Keywords: Extensive air showers; cosmic rays; Cherenkov detectors; observatories; detectores Cherenkov.

Resumen

Estudiamos la variación azimutal de las señales detectadas en tanques seleccionados de la red de ingeniería del Observatorio Pierre Auger. Ajustamos una parametrización a las variaciones observadas. También notamos que es posible analizar las variaciones para detectar errores en el cableado entre los tubos fotomultiplicadores y la tarjeta controladora.

Descriptores: Chubascos atmosféricos; rayos cósmicos; detectores Cherenkov; observatorios.

PACS: 95.55.Vj; 96.50.sd; 96.50.S–; 29.40.Ka; 95.45,+i

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Note

* Previously at: Instituto de Ciencias Nucleares, UNAM.