Mainz 2022 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 15: Instrumentation V

HK 15.5: Talk

Monday, March 28, 2022, 17:15–17:30, HK-H4

Firmware improvements for the FPGA-based Sampling-ADC readout of the Crystal Barrel Calorimeter — •Benedikt Otto for the CBELSA/TAPS collaboration — HISKP, Uni Bonn

The CBELSA/TAPS experiment investigates the photoproduction of neutral mesons. Since June 2021, the experiment’s main calorimeter is equipped with a new Sampling-ADC (SADC) readout, based on 14bit@80MS ADCs and Kintex7 FPGAs. The firmware taking care of feature extraction and UDP/IP communication is currently developed further and improved.

Part of these enhancements is the resource-efficient implementation of a finite-impulse-response (FIR) filter to perform effective noise reduction. Additional improvements to the feature-extraction algorithms themselves are presented as well. To furthermore accommodate multihit-features and a custom waveform compression method, the packet structure had to be adapted.

As integral part of the firmware development, a comprehensive test suite was implemented using python and cocotb which allows convenient and automated testing of firmware components.