| Title: |
Performance and shower shape studies with EPICAL-2 |
| Authors: |
Keul, J.; Alme, J.; Barthel, R.; Borshchov, V.; Bosley, R.; van den Brink, A.; Büsching, H.; Groettvik, O. S.; Peitzmann, T.; Pliquett, F.; Protsenko, M.; Røed, K.; Rogoschinski, T. S.; Röhrich, D.; Rossewij, M. J.; Schöngarth, J.; Solheim, E. H.; Sundstrom, N. B.; Tymchuk, I.; Ullaland, K.; Watson, N. K.; Yokoyama, H.; Gravitational and Subatomic Physics (GRASP); Sub GRASP; Sub Subatomic Physics (SAP) |
| Publication Year: |
2026 |
| Subject Terms: |
Calorimeter methods; Calorimetry; Electromagnetic showers; Monolithic active pixel sensors; Nuclear and High Energy Physics; Instrumentation |
| Description: |
A prototype of a novel digital electromagnetic calorimeter, EPICAL-2, has been developed. The R&D is performed in the context of the ALICE-FoCal and is closely related to studies of imaging in proton CT. Digital calorimetry also proves promising for future collider projects such as EIC, ILC, CLIC, or FCC. Based on a proof-of-principle with a first prototype, EPICAL-2 has been constructed as an advanced second prototype. EPICAL-2 consists of 24 layers with alternating tungsten absorbers and ALPIDE MAPS. The design features an active area of approximately 27x30mm2 and a depth of 20 radiation lengths, totaling over 25 million pixels. EPICAL-2 test-beam measurements were performed at DESY in February 2020 and CERN-SPS in September 2021. Simulations of the EPICAL-2 detector have been carried out with the Allpix2 framework. Performance studies with EPICAL-2 show promising energy response and resolution. Beyond its main calorimetric abilities, EPICAL-2 allows for detailed shower shape studies. Measurements of the longitudinal and lateral shower shape and the Molière radius have been carried out, indicating strong shower separation power of the EPICAL-2’s design. |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
English |
| ISSN: |
0168-9002 |
| Relation: |
https://dspace.library.uu.nl/handle/1874/480159 |
| Availability: |
https://dspace.library.uu.nl/handle/1874/480159 |
| Rights: |
info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.C500175 |
| Database: |
BASE |