Heidelberg 2022 – scientific programme

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GR: Fachverband Gravitation und Relativitätstheorie

GR 14: Gravitational Wave Detectors

GR 14.4: Talk

Thursday, March 24, 2022, 17:15–17:35, GR-H2

Test setup for cryogenic sensors and actuators working towards the Einstein Telescope — •Robert Joppe¹, Tim Kuhlbusch², Thomas Hebbeker¹, Vivek Pimpalshende², 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 among other improvements by cooling the main parts of the interferometer. The required electronic components, sensors and actuators needed for mirror alignment and active dampening of suspension resonances have to perform at cryogenic temperatures.

The talk presents the progress on the development of electronics and mechanics within the E-TEST project. The performance of our cryogenic ultra high vacuum test setup will be furthermore explicated.