Regensburg 2007 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 21: Solids at Low Temperature - Poster Session

TT 21.17: Poster

Mittwoch, 28. März 2007, 14:00–17:45, Poster A

Analysis of mechanical loss processes of low loss materials for interferometric gravitational wave detectors in the low temperature range — •Daniel Heinert¹, Anja Zimmer¹, Ronny Nawrodt¹, Wolfgang Vodel¹, Andreas Tünnermann², and Paul Seidel¹ — ¹Institut für Festkörperphysik, FSU Jena, Helmholtzweg 5, 07743 Jena — ²Institut für Angewandte Physik, FSU Jena, Albert-Einstein-Straße 15, 07745 Jena

Thermal noise introduced by mechanical losses is one main limitation in the detection frequency band of interferometric gravitational wave detectors. Cooling of the optical components could produce a relief insofar as materials featuring low mechanical losses at cryogenic temperatures are used. Influences of different loss mechanisms on the mechanical quality factor are presented, especially under consideration of the excited mode shape.

This work was supported by the DFG under contract SFB Transregio 7.