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GR: Fachverband Gravitation, Relativistische Astrophysik und Kosmologie

GR 10: Poster

GR 10.6: Poster

Mittwoch, 18. März 2026, 16:15–18:45, Redoutensaal

Calibration and optimization of Target CTC ASICS for enhanced phase resolution in phase cameras — •Niklas Kotschi for the Einstein Telescope collaboration — Erlangen Centre for Astroparticle Physics (ECAP) Friedrich-Alexander-Universität Erlangen-Nürnberg Nikolaus-Fiebiger-Str. 2 91058 Erlangen

The Einstein Telescope is a planned gravitational wave observatory designed to detect spacetime distortions with unprecedented sensitivity. This can be achieved with a large michelson-interferometer setup.The laser needs to be well aligned to measure the phase. For this purpose, a new kind of phase camera, which uses an array of optical fibers to capture the laser was introduced. A cost efficient solution to digitize these multi-channel analog inputs are a new set of Application-Specific Integrated Circuits (ASICs), which were originally designed for the readout of signals from photosensors in cameras of Imaging Atmospheric Cherenkov Telescopes for ground-based gamma-ray astronomy. They were optimized for single photon detection. For phase cameras these ASICs need to be optimized for readout of high intensity waveforms. This is why calibration and optimization of TARGET CTC ASICs for application in phase camera systems is important. The resolution is integration time dependent. Therefore reducing the sample speed can increase the resolution by increasing the integration time. Jitter from different GPS clocks was analyzed to optimize the synchronisation stability. The results demonstrate key improvements in data acquisition stability. Testing out different calibration and timing parameters and their impact on the waveforms and phase resolution were done.

Keywords: phase camera; Integrated Circuits; Firmware