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HK: Fachverband Physik der Hadronen und Kerne
HK 27: Instrumentation VI
HK 27.4: Vortrag
Dienstag, 12. März 2024, 18:30–18:45, HBR 19: C 1
Shower Shape Studies with EPICAL-2 — •Jan Schöngarth — Institut für Kernphysik, 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.
EPICAL-2 consists of alternating W absorber and Si sensor layers employing the ALPIDE sensor developed for the ALICE-ITS upgrade. It has a total thickness of 20 radiation lengths, an area of 30 mm * 30 mm, and 25 million pixels of size ∼ 30 * 30 µm2 . 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 Allpix2, a generic simulation framework for semiconductor detectors.
In this talk, an overview of the detector response in data and simu-lation, using different energy proxies, namely the number of pixel hits, clusters or charged shower particles per event, is given. In addition, a study of the electromagnetic shower shape including a 2D-parametrization of lateral density profiles is presented.
Supported by BMBF and the Helmholtz Association.
Keywords: EPICAL-2; Calorimeter; Pixeldetector; Allpix Squared; Electromagnetic Shower