Gießen 2024 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 63: Instrumentation XV

HK 63.2: Vortrag

Donnerstag, 14. März 2024, 16:00–16:15, HBR 19: C 1

Construction of the crystal Zero Degree Detector for BESIII — •Frederic Stieler, Achim Denig, Peter Drexler, Werner Lauth, Jan Muskalla, Saskia Plura, Christoph Florian Redmer, and Yasemin Schelhaas for the BESIII collaboration — Institute for Nuclear Physics, Johannes Gutenberg University Mainz, Germany

The crystal Zero Degree Detector (cZDD) is a proposed addition to the BESIII experiment in China. In order to measure hadronic cross sections with the Initial State Radiation (ISR) method for a more precise calculation of the hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon, ISR photons have to be detected. Since these photons are mostly emitted at small angles in relation to the colliding particles, the cZDD will measure these photons at angles of about 1.5 mrad to 10.4 mrad, that are not covered yet by the already existing detectors at BESIII.

In this presentation the design of the first prototype of the cZDD is discussed and the development of an online feature extraction based on FPGAs is motivated.

Keywords: BESIII; cZDD