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Bochum 2018 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 5: Instrumentation I

HK 5.3: Vortrag

Montag, 26. Februar 2018, 14:45–15:00, Audimax H1

The HADES electromagnetic calorimeter upgrade: status and perspectives* — •Adrian Rost — TU Darmstadt

The HADES spectrometer is located at the SIS18 accelerator at the GSI Helmholtzzentrum für Schwerionenforschung GmbH in Darmstadt. The new electromagnetic calorimeter (ECAL) detector, which is based on lead-glass modules, is currently under commissioning. The calorimeter enables photon measurements. Thus neutral mesons (π0, η, ω), which are essential for interpretation of dilepton data, will be measured. Furthermore, photon measurement is of a large interest for the HADES strangeness program. The read-out system is based on the PaDiWa-AMPS2 Q2ToT (Charge-to-Time-over-Threshold) front-end board for the well established TRB3 (Trigger and Read-out Board - version 3) platform. The needed discriminators, the high precision TDCs (Time-to-Digital-Converters) and the data acquisition functionality are implemented with the help of FPGAs (Field Programmable Gate Arrays). In this contribution the status of the detector installation will be shown. Special emphasis will be put on the read-out system and its performance.

*This work has been supported by the DFG through GRK 2128 and VH-NG-823.

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