München 2019 – wissenschaftliches Programm
HK 54.76: Poster
Donnerstag, 21. März 2019, 16:30–19:00, Foyer Theresanium
Development of a MiniTAPS Trigger Board for the CBELSA/TAPS Experiment — •Janis Hoff, Christian Honisch, and Annika Thiel for the CBELSA/TAPS collaboration — Helmholtz-Institut für Strahlen- und Kernphysik der Universität Bonn
The structure of hadrons is investigated by the CBELSA/TAPS experiment using electromagnetic probes.
The MiniTAPS calorimeter is one of the central parts of the detector system. The detector covers the forward angle between 1∘ and 12∘ and is ideally suited to detect photons with energies between 10 MeV and 2.0 GeV. The detector consists of 216 BaF2 crystals which are read out via photomultiplier tubes. Due to its fast timing the detector can contribute to the first level trigger. For this purpose, the crystals are grouped into four sectors and the number of sectors hit in one event is provided for the trigger decision.
The current trigger electronics will be replaced, which will in future allow for a more sophisticated trigger decision algorithm. The discriminator signals of all crystals will be connected to one FPGA. A commercially available VME module will be utilized and extended with high-density level-translation input cards.
This poster shows how the high input density of 10.8 differential pairs per cm is implemented in the prototype and presents the results of the analysis researching the benefits of a full cluster encoder compared to the currently used algorithm.