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GR: Fachverband Gravitation und Relativitätstheorie

GR 14: Gravitational Wave Detectors

GR 14.2: Vortrag

Donnerstag, 24. März 2022, 16:35–16:55, GR-H2

The implementation of stray light simulation tool for the Einstein Telescope — •Hanna Marozava and Thomas Bretz — RWTH Aachen University

The Einstein Telescope will be the first gravitational wave detector of the third generation. Stray light is a severe problem for modern interferometers with high sensitivity, as another noise source contributing to the interferometer output. Simulation is requied to optimize detector settings to avoid undesirable light paths. Stray light simulation can be done with special optical analysis software, but existing tools are not ideally suited for general application, or require expensive licences. Therefore ET optical simulation task is still urgent.

The goal of this work is development of dedicated free tool for stray light simulation, easy to use and including higher precision and different aspects of stray light. Simulation involves modelling the system design, calculating the intersection points of the rays with the surfaces and simulating of stray light paths, and algorithms for some of this steps are already found.

This talk will present the progress of stray light simulation tool development, including the analysing of existing optical software, implementation of simulation and first results.