Speaker
Description
The Einstein Telescope will increase the sensitivity to gravitational wave detections with respect to the current detectors, especially in the low-frequency band (down to 2 Hz). Reaching such sensitivities at low frequencies implies great technology challenges: in order to reduce the seismic and the thermal noise very soft suspensions and cryogenic temperatures are needed. A big challenge arises here: to bring and to keep a test mass at temperatures around 10 K we need to extract heat from it. The only way to do this is via thermal conductivity of the test mass suspension elements. However, soft suspensions are non-compatible with the need of extracting heat which would require short suspensions with a large cross section. We propose here a new suspension morphology in order to allow a good heat extraction without spoiling the softness of the suspensions. This should provide a good solution to one of the biggest technological problems of building the Einstein Telescope.
