Bonn 2020 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 50: Instrumentation XII

HK 50.2: Talk

Thursday, April 2, 2020, 14:30–14:45, J-HS K

Test measurements of the cZDD prototype for the BESIII experiment — •Saskia Plura, Achim Denig, Yasemin Schelhaas, Werner Lauth, Peter Drexler, and Igor Beltschikow for the BESIII collaboration — Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, Germany

The BESIII experiment is located at the BEPCII electron-positron collider in Beijing, China, which is operated in the τ-charm energy region. Physics events, such as Initial State Radiation (ISR) processes, require an instrumentation close to the beam axis.

The crystal Zero Degree Detector (cZDD) is a small calorimeter consisting of LYSO crystals, which was proposed for BESIII. A first prototype of the cZDD has been studied at the test beam facility at the MAMI accelerator in Mainz. We report on GEANT4 simulations, which have been carried out to provide similar beam conditions compared to BESIII at the test stand. We also present the results of the test beam time and implications for the final setup at the BESIII experiment.

This work is supported by DFG SFB1044.