Effect of optical crosstalk on performance of ILD AHCAL

TL;DR

This paper investigates how optical crosstalk between scintillator tiles in the ILD AHCAL affects its performance, using simulations to inform design requirements for optimal calorimeter function.

Contribution

It provides a simulation-based analysis of optical crosstalk effects, guiding the design of active layers in the ILD AHCAL for improved performance.

Findings

Optical crosstalk impacts calorimeter resolution.

Simulation results define acceptable crosstalk levels.

Design recommendations for scintillator tile readout.

Abstract

The design of the ILD AHCAL is optimized to make the best use of the PFA and its active layers are composed of about eight million scintillator tiles readout by SiPMs. If there is optical crosstalk between the tiles, the calorimeter performance can be worsened. Simulation studies on the effect of the optical crosstalk on the calorimeter performance were performed to define the requirement for the active layer design.