EPJ Web Conf.
Volume 216, 20198th International Conference on Acoustic and Radio EeV Neutrino Detection Activities (ARENA 2018)
|Number of page(s)||7|
|Published online||24 September 2019|
Hydrophone characterization for the KM3NeT experiment
TNO, Technical Sciences, Optics department, Delft, the Netherlands
2 TNO, Technical Sciences, Acoustics and Sonar department, The Hague, the Netherlands
3 University of Amsterdam, Amsterdam, the Netherlands
4 Erlangen Center for Astroparticle Physics, University of Erlangen, Erlangen, Germany
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Published online: 24 September 2019
With the KM3NeT experiment, which is presently under construction in the Mediterranean Sea, a new neutrino telescope will be installed to study both the neutrino properties as well as the cosmic origin of these particles. To do so, about 6000 optical modules will be installed in the abyss of the Mediterranean Sea to observe the Cherenkov radiation induced by high energy particle interactions in the deep sea. As each module of the KM3NeT telescope includes a piezo hydrophone, KM3NeT will also provide a unique matrix of underwater hydrophones. Results from the measurements show a well understood response of continuous signals, such as tones. In contrast, the response to transients signals exhibit a complex behavior with ringing and echo’s. Amplitude calibration measurements show a frequency dependent response which can be corrected for. Finally a system noise floor has been determined which amounts to 45 dB Re μPa2/Hz at 30 kHz.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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