Dortmund 2021 – scientific programme

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T: Fachverband Teilchenphysik

T 20: DAQ, trigger and electronics I

T 20.9: Talk

Monday, March 15, 2021, 18:00–18:15, Tt

Optimizations and Upgrades to the SuperCDMS SNOLAB L1 Trigger System — •Hanno Meyer zu Theenhausen, Lea Burmeister, Fatema Thasrawala, Matthew Wilson, Alexander Zaytsev, and Belina von Krosigk — Universität Hamburg

The SuperCDMS SNOLAB dark matter search experiment targets sensitivity toward nuclear- and electron-recoil interactions with deposited energies as low as a few eV. This puts requirements on the resolution, efficiency, noise rejection, and throughput capacity of the employed trigger system. To accomplish this, the SuperCDMS trigger system is implemented on an FPGA on custom-hardware detector readout cards. Using a multi-modular architecture, input waveforms from the detector channels are downsampled, filtered, and subjected to a flexible threshold- and trigger logic. The filtering step is achieved via an FIR filter of which the coefficients resemble a time-domain optimal filter. This presentation gives an overview about the trigger system and reports on parameter optimizations regarding the downsampling and FIR filtering modules. Finally an outlook is given on a near future upgrade involving noise correlations between individual input channels, as well as a far future upgrade about triggering using an FPGA-level neural network.