SMuK 2021 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 6: Instrumentation II

HK 6.3: Talk

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

APD-Gain optimization for the PANDA Barrel EMC — •Aniko Tim Falk, Markus Moritz, Hans-Georg Zaunick, Kai-Thomas Brinkmann, Valera Dormenev, Kim Tabea Giebenhain, Christopher Hahn, Marvin Peter, Matthias Sachs, and René Schubert for the PANDA collaboration — II. Physikalisches Institut, Justus-Liebig-Universität, Gießen

The future electromagnetic calorimeter of the PANDA Experiment will provide an excellent energy resolution over a wide dynamic range. In order to reveal the full potential of its readout, the gain of the APDs can still be further optimized. With the goal to detect high energy photons over a wide energy range from a few dozens of MeV up to 15 GeV, the system must provide a most excellent energy resolution over the whole spectrum whilst maintaining the required dynamic range of the individual readout-electronics. The progress made on this subject over the last two years shall be briefly summarized in this contribution. Various measurements have been made on a complete setup, including an accelerator experiment at MAMI with tagged photons, that is very close to the final read out of the PANDA EMC. To match environmental conditions during operation, the setup was cooled to −25 ^∘C. The analysis of the data is still in progress to this date. This project is supported by BMBF, GSI and HFHF.