Karlsruhe 2024 – scientific programme

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T: Fachverband Teilchenphysik

T 118: Gravitational waves 2

T 118.3: Talk

Friday, March 8, 2024, 09:30–09:45, Geb. 30.23: 6/1

Test setup for cryogenic sensors and actuators working towards the Einstein Telescope — Charlotte Benning², Thomas Hebbeker¹, •Robert Joppe¹, Tim Kuhlbusch², Oliver Pooth², Achim Stahl², and Franz-Peter Zantis¹ — ¹III. Physikalisches Institut A, RWTH Aachen — ²III. Physikalisches Institut B, RWTH Aachen

The Einstein Telescope will be the first gravitational wave detector of the third generation. The sensitivity goal, especially in the low frequency region, will be achieved in particular by cooling the main parts of the interferometer. The required electronic components, sensors and actuators needed for mirror alignment and active damping of suspension resonances have to perform at cryogenic temperatures. The talk presents the progress on the development of electronics, optics and mechanics within the E-TEST project. Furthermore, the performance of our cryogenic UHV test setup and the characterization of light emitting diodes at low temperatures will be explicated.

Keywords: Einstein Telescope; Gravitational Waves; Cryogenics; E-TEST