Bonn 2020 – scientific programme

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T: Fachverband Teilchenphysik

T 76: Dark Matter III

T 76.4: Talk

Thursday, April 2, 2020, 17:15–17:30, H-HS XIV

Optimized triggering and noise mitigation in the SuperCDMS experiment — •Hanno Meyer zu Theenhausen — University of Hamburg

The SuperCDMS SNOLAB experiment is a direct detection search for dark matter using phonon and charge signals in ultra cold Si and Ge crystals. In the search for light dark matter, axion-like particles and dark photons the sub-MeV mass range offers unexplored parameter space which becomes accessible at high exposures and low recoil energies down to 7 eV using high voltage amplified phonon detectors and down to ∼1 eV by prototype ultra-pure single crystal detectors. To reach the desired search thresholds, the experiment requires a challenging event-by-event discrimination between signal-like and noise events. This requirement concerns both the data acquisition and trigger system as well as the offline analysis. This talk reports on a study on the optimized trigger threshold and noise mitigation methods using optimal filters and machine learning techniques for the data acquisition systems and the subsequent analyses.