SMuK 2023 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 3: Instrumentation II

HK 3.4: Talk

Monday, March 20, 2023, 17:30–17:45, SCH/A.101

A sophisticated trigger veto system for the MAGIX experiment — •Sebastian Stengel for the MAGIX collaboration — Institute for Nuclear Physics, Johannes Gutenberg University Mainz

At the new electron accelerator MESA, the MAGIX setup will be used for high- precision scattering experiments including dark sector searches, the study of hadron structure and few-body systems, and investigations of reactions relevant to nuclear astrophysics.

Together with the MAGIX time projection chamber (MX-TPC), the MAGIX trigger veto system builds the sophisticated detector system inside the two high-resolution magnetic spectrometers. It will provide the fast and reliable signals essential for DAQ, coincidence time measurements, and PID, as well as the basic hit and position information for the triggered readout of the MX-TPC.

The MAGIX trigger veto system consists of one segmented trigger layer made of plastic scintillation detectors and a flexible veto system of additional scintillation detectors and lead absorbers mounted below the trigger layer.

The data readout uses the ultrafast preamplifier-discriminator NINO chip which encodes the signal amplitudes using the time-over-threshold method, followed by FPGAs programmed as TDCs.