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Performance of the Electromagnetic Pixel Calorimeter Prototype EPICAL-2
- Publication Year :
- 2022
-
Abstract
- The first evaluation of an ultra-high granularity digital electromagnetic calorimeter prototype using 1.0-5.8 GeV/c electrons is presented. The $25\times10^6$ pixel detector consists of 24 layers of ALPIDE CMOS MAPS sensors, with a pitch of around 30~$\mu$m, and has a depth of almost 20 radiation lengths of tungsten absorber. Ultra-thin cables allow for a very compact design. The properties that are critical for physics studies are measured: electromagnetic shower response, energy resolution and linearity. The stochastic energy resolution is comparable with the state-of-the art resolution for a Si-W calorimeter, with data described well by a simulation model using GEANT and Allpix$^2$. The performance achieved makes this technology a good candidate for use in the ALICE FoCal upgrade, and in general demonstrates the strong potential for future applications in high-energy physics.<br />Comment: 30 pages, 19 figures, submitted to JINST
- Subjects :
- Physics - Instrumentation and Detectors
High Energy Physics - Experiment
Subjects
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.2209.02511
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1088/1748-0221/18/01/P01038