Dresden 2006 – wissenschaftliches Programm

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TT: Tiefe Temperaturen

TT 23: Solids At Low Temperature: Cryogenics

TT 23.6: Vortrag

Mittwoch, 29. März 2006, 16:00–16:15, HSZ 02

Low mechanical loss materials at cryogenic temperatures for interferometric gravitational wave detectors — •Anja Zimmer, Ronny Nawrodt, Sandor Nietzsche, Ralf Neubert, Matthias Thürk, Wolfgang Vodel, and Paul Seidel — Institut für Festkörperphysik, FSU Jena, Helmholtzweg 5, 07743 Jena

High precision instruments like gravitational wave detectors require components with very low thermal noise. This noise can be reduced by cooling down and using materials providing low mechanical loss even at the operating temperature. A special cryogenic measuring setup was used for investigation of the mechanical loss within the temperature range of 5 to 300 K. Experimental results on different materials are discussed focussing on microscopic processes in solids.

This work was supported by the German DFG under contract SFB TR7.