IFLP   13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
artículos
Título:
Antennas for the Detection of Radio Emission Pulses from Cosmic-Ray induced Air Showers at the Pierre Auger Obervatory
Autor/es:
PIERRE AUGER COLLABORATION (J. ABRAHAM, ... , A. MARIAZZI, ET AL)
Revista:
JOURNAL OF INSTRUMENTATION
Editorial:
IOP PUBLISHING LTD
Referencias:
Lugar: Londres; Año: 2012 vol. 7 p. 10011 - 10011
ISSN:
1748-0221
Resumen:
The Pierre Auger Observatory is exploring the
potential of the radio detection technique to study extensive air
showers induced by ultra-high energy cosmic rays. The Auger Engineering
Radio Array (AERA) addresses both technological and scientific aspects
of the radio technique. A first phase of AERA has been operating since
September 2010 with detector stations observing radio signals at
frequencies between 30 and 80 MHz. In this paper we present comparative
studies to identify and optimize the antenna design for the final
configuration of AERA consisting of 160 individual radio detector
stations. The transient nature of the air shower signal requires a
detailed description of the antenna sensor. As the ultra-wideband
reception of pulses is not widely discussed in antenna literature, we
review the relevant antenna characteristics and enhance theoretical
considerations towards the impulse response of antennas including
polarization effects and multiple signal reflections. On the basis of
the vector effective length we study the transient response
characteristics of three candidate antennas in the time domain.
Observing the variation of the continuous galactic background intensity
we rank the antennas with respect to the noise level added to the
galactic signal.