München 2009 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 105: Experimentelle Techniken der Astroteilchenphysik 1

T 105.7: Vortrag

Donnerstag, 12. März 2009, 18:25–18:40, M105

Fourier based analysis of the acoustic attenuation length in ice with SPATS — •Matthias Schunck, Martin Bissok, Karim Laihem, and Christopher Wiebusch — RWTH Aachen

The SPATS project (South Pole Acoustic Test Setup) investigates the feasibility of acoustic neutrino detection at extremely high energies at the site of the IceCube detector at South Pole. An important prerequisite is a small attenuation of the sound waves generated by neutrino interactions via the thermoacoustic effect. To measure the attenuation length, a retrievable acoustic pinger was lowered into the open IceCube holes before the deployment of the optical strings while the SPATS sensors were taking data. The basic idea of our study is to analyze the amplitudes of the Fourier-transformed signals as a function of distance and frequency. The method of the analysis is motivated, first results are given and the systematic uncertainties are discussed.