May 15 – 19, 2023
America/Los_Angeles timezone

Recent progress and future plans for ultra-high granularity CMOS ECAL

May 18, 2023, 3:50 PM
20m
53/3-3004 - Havasu (SLAC)

53/3-3004 - Havasu

SLAC

23
Remote Parallel Session Track 3: Detector R&D Physics and Detectors: Track 3

Speaker

Nigel Watson (University of Birmingham)

Description

The concept of a digital electromagmetic calorimeter using MAPS sensors as the active layers has been demonstrated using the EPICAL-2 prototype, a 24 layer, ~20 radiation length device. Each layer has an active area of $30\times 30~\mathrm{mm^2}$ provided by two ALPIDE sensors. Final results characterising the performance in terms of energy resolution, linearity and lateral shower profile using $1-6$~GeV electrons are presented. The results, obtained using sensors developed and optimised for the ALICE ITS upgrade, are comparable to those from an analogue silicon-tungsten calorimeter. Improvements using sensors designed with calorimetry as a target application are likely to be able to further enhance performance. Future prospects for futher development of the digital electromagnetic calorimeter concept will be discussed.

Primary author

Nigel Watson (University of Birmingham)

Presentation materials