The ILD/CALICE Silicon-Tungsten Electromagnetic Calorimeter: status and potential

TL;DR

This paper discusses the development and testing of a high-granularity silicon-tungsten electromagnetic calorimeter prototype designed for future collider detectors, emphasizing technological innovations and performance optimization.

Contribution

It presents a new silicon-tungsten ECAL prototype with advanced features like modularity, embedded electronics, and minimal dead zones, along with initial beam test results and ongoing design studies.

Findings

Prototype achieved successful beam tests

Design optimizations are ongoing

Technological features meet detector requirements

Abstract

The Particle Flow Algorithms adopted for future $e^{+}e^{-}$ colliders detectors and phase-II CMS upgrade require very high granularity calorimeters to deconvolve the individual contributions of particles in jets. This is especially true for electromagnetic calorimeters (ECAL). For a realistic large detector many technological requirements have to be fulfilled: modularity for industrialization; compact integration of an embedded very front-end electronics featuring large dynamics, low-power and self-triggering; mechanical structure and cooling systems with minimal dead zones. The technological prototype of the silicon-tungsten (SiW) ECAL presented here should achieve all this. 10 layers are produced and tested in beam, while design and optimization studies are ongoing on a variety of simulated key processes to test the performance of the hardware and the algorithms.