Köln 2025 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 23: Poster

HK 23.10: Poster

Dienstag, 11. März 2025, 17:30–19:00, Foyer Physik

Simulation Studies with the digital calorimeter EPICAL-2. — •Jan Schöngarth — Institut für Kernphysik Frankfurt, Goethe-Universität Frankfurt

The EPICAL-2 detector has been designed and constructed within the endeavour to develop a novel electromagnetic calorimeter based on a SiW sampling design using silicon pixel sensors with binary readout. The R\&D is performed in the context of the proposed Forward Calorimeter upgrade within the CERN-ALICE experiment and is strongly related to proton CT imaging studies as well as applicable to future collider projects.\par EPICAL-2 consists of alternating W absorber and Si sensor layers employing the ALPIDE sensor developed for the ALICE-ITS upgrade. EPICAL-2 has been successfully tested with cosmic muons as well as in test-beam campaigns at DESY and CERN-SPS. Monte Carlo simulations have been performed using Allpix$^2$, a generic simulation framework for semiconductor detectors.\par In this poster, the performance of EPICAL-2 in simulation, using different energy proxies, i.e. the number of pixel hits, clusters or charged shower particles per event, is presented. Additionally, the measured particle composition of the CERN-SPS test-beam is presented.\par Supported by BMBF and the Helmholtz Association.

Keywords: EPICAL-2; Digital Calorimeter; Silicon Pixel Sensors; Allpix Squared; Electromagnetic Showers