Heidelberg 2022 – scientific programme

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T: Fachverband Teilchenphysik

T 69: DAQ and Trigger 3

T 69.2: Talk

Wednesday, March 23, 2022, 16:30–16:45, T-H28

Towards the next generation Level-1 Trigger of SuperCDMS — •Hanno Meyer zu Theenhausen — Karlsruher Institut für Technologie

The SuperCDMS SNOLAB dark matter search experiment targets sensitivity towards nuclear and electron recoils down to energies of a few eV. At the lowest energies, the detector sensitivity is limited by thermal and electronic noise. To extract signals from the noise with high efficiency and resolution, SuperCDMS employs a Level-1 trigger system implemented on an FPGA on custom-hardware detector readout cards. Therein, digitized input traces are analyzed in a complex trigger architecture with a finite-impulse-response (FIR) filter at its heart. The FIR is configured as an optimal filter (OF) which can cause pathological "echo triggers" in the presence of large pulses. This presentation reports on the Level-1 trigger architecture, the OF FIR design and how echo triggers are circumvented making use of the complex trigger logic. Furthermore, an outlook on the performance of a neural network trigger as a potential trigger upgrade is given.