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@PHDTHESIS{Fliescher:82811,
author = {Fliescher, Stefan},
othercontributors = {Erdmann, Martin},
title = {{A}ntenna devices and measurement of radio emission from
cosmic ray induced air showers at the {P}ierre {A}uger
{O}bservatory},
address = {Aachen},
publisher = {Publikationsserver der RWTH Aachen University},
reportid = {RWTH-CONV-143170},
pages = {V, 220 S. : Ill., graph. Darst.},
year = {2012},
note = {Aachen, Techn. Hochsch., Diss., 2011},
abstract = {Radio detection of air showers originating from ultra-high
energy cosmic rays is considered world wide as a candidate
technique for the next generation of Earth bound cosmic ray
observatories. In the research and development of this
technique major challenges concern the antenna sensor,
signal processing, triggering and data interpretation. In
this thesis we present hardware and software developments,
central simulations studies, theoretical calculations,
calibrations and data analysis for the overall development
of two engineering radio arrays at the Pierre Auger
Observatory with special emphasis on the antenna sensor. The
transient nature of the air shower signal requires a
detailed description of the antenna to allow for a
calibrated measurement of the incident signal. We identify
the vector effective length as suitable quantity to perform
the calculation of the antenna response to transient signals
including multiple reflections, interference and
polarization effects. We present our research and
development including the calibration of the antenna which
is used in the current setup of Auger Engineering Radio
Array (AERA). Using air shower data from a pioneering radio
detector installation we study the lateral fall-off of the
radio signal with increasing distance to the air shower
axis. Furthermore, we study the data that is recorded during
the start up phase of AERA. We characterize major sources of
transient signals in the vicinity of AERA in
three-dimensional space. We introduce a method for the
rejection of background signals which results in an
efficient selection of air showers from the AERA data set.
Finally, we evaluate candidate antennas for the next setup
phase of AERA regarding their response characteristics to
transient waveforms. Using comparative measurements of the
variation of galactic radio signals performed at the Nançay
Radio Observatory we discriminate the candidate antennas
with respect to an optimal noise performance.},
keywords = {Radiofrequenzstrahlung (SWD) / Luftschauer (SWD) / UHECR
(SWD) / Antenne (SWD)},
cin = {133110 / 130000 / 133320},
ddc = {530},
cid = {$I:(DE-82)133110_20140620$ / $I:(DE-82)130000_20140620$ /
$I:(DE-82)133320_20140620$},
shelfmark = {96.50.Sd 9},
typ = {PUB:(DE-HGF)11},
urn = {urn:nbn:de:hbz:82-opus-39982},
url = {https://publications.rwth-aachen.de/record/82811},
}
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