Abstract
In order to detect the small neutrino
uxes expected at ultra-high energies, large
volumes of materials have to be instrumented with inexpensive but
sensitive acoustic sensors.
The South Pole Acoustic Test Setup (SPATS) will be installed in the
Antarctic ice during
the polar season 2006/2007 after which the collected data will be
used to reveal the acoustic
properties of the South Polar ice cap. The developed piezoceramic
based ultrasound sensors
and transmitters that are part of this system have been extensively
studied during calibration
measurements in water, using a commercial hydrophone as reference.
Also, a SPATS system
test was accomplished in Lake Tornetrask, Abisko (Sweden). This allowed
verication of the
DAQ system, transmitter range and sensor performance. Here the results
of the calibrations
and the Abisko lake measurements are reported.
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