학술논문

Results from the EPICAL-2 Ultra-High Granularity Electromagnetic Calorimeter Prototype
Document Type
Working Paper
Source
Subject
Physics - Instrumentation and Detectors
High Energy Physics - Experiment
Language
Abstract
A prototype of a new type of calorimeter has been designed and constructed, based on a silicon-tungsten sampling design using pixel sensors with digital readout. It makes use of the Alpide MAPS sensor developed for the ALICE ITS upgrade. A binary readout is possible due to the pixel size of $\approx 30 \times 30 \, \mu \mathrm{m}^2$. This prototype has been successfully tested with cosmic muons and with test beams at DESY and the CERN SPS. We report on performance results obtained at DESY, showing good energy resolution and linearity, and compare to detailed MC simulations. Also shown are preliminary results of the high-energy performance as measured at the SPS. The two-shower separation capabilities are discussed.
Comment: Proceedings to PM2021 - The 15. PISA Meeting on Advanced Detectors, updated after referee review