Beam test performance of a highly granular silicon tungsten calorimeter technical prototype for the ILD

TL;DR

This paper reports on the testing and initial results of a highly granular silicon-tungsten calorimeter prototype designed for the International Large Detector at the future International Linear Collider, focusing on electromagnetic shower properties.

Contribution

It presents the development, testing, and preliminary analysis of a silicon-tungsten calorimeter prototype with integrated electronics for high granularity in collider detectors.

Findings

Successful testing of 7-layer prototype at DESY

Initial characterization of electromagnetic shower properties

Outline of digitization approach for future simulations

Abstract

A highly granular silicon-tungsten electromagnetic calorimeter (SiW-ECAL) is the reference design of the ECAL for International Large Detector concept, one of the two detector concepts for the future International Linear Collider. Prototypes for this type of detector are developed within the CALICE Collaboration. The technological prototype addresses technical challenges such as integrated front-end electronics or compact layer and readout design. A stack of 7 layers was compiled and tested at DESY test beam facilities in 2017. We present preliminary results on the properties of the electromagnetic showers. An outline on the next steps is given. Finally, we illustrate the first steps of the digitization concept on simulations of the prototype.