SMuK 2021 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 6: Instrumentation II

HK 6.2: Talk

Monday, August 30, 2021, 17:00–17:15, H5

Energy resolution optimization for the PANDA EMC regarding the LAAPD gain — •Kim Tabea Giebenhain for the PANDA collaboration — Justus-Liebig-Universität, Gießen, Deutschland

For the future Facility for Antiproton and Ion Research, the PANDA experiment will be a unique opportunity to study proton antiproton collisions. One of the most crucial detector parts is the electromagnetic calorimeter. In order to meet the high precision demands in reconstruction and particle identification, its energy resolution is an important factor. The energy resolution depends on the signal to noise ratio of the front-end, especially at the crucial low energies. To improve the calorimeter performance beyond its design goal, for potential future even more demanding requirements, a study was done to find the optimal bias voltage for the utilized Large Area Avalanche Photo Diodes for energy ranges between 10 MeV and 2 GeV, using a light pulser system to simulate the PWO-II scintillation light. Since the dynamic range of the read-out chain is limited, additional simulation studies were conducted to find out, if the optimum bias voltage can be used for higher beam momenta.
Supported by BMBF, GSI/FAIR, HFHF