Construction and Response of a Highly Granular Scintillator-based Electromagnetic Calorimeter

Abstract

A highly granular electromagnetic calorimeter with scintillator strip readout is being developed for future lepton collider experiments. A prototype of 21.5 $X_0$ depth and $180\times 180$mm${}^2$ transverse dimensions was constructed, consisting of 2160 individually read out $10\times 45\times 3$ mm${}^3$ scintillator strips. This prototype was tested using electrons of 2--32 GeV at the Fermilab Test Beam Facility in 2009. Deviations from linear energy response were less than 1.1\%, and the intrinsic energy resolution was determined to be $(12.5\pm 0.1(stat.)\pm 0.4(syst.))\%/\sqrt{E[\mathrm{GeV}]}\oplus (1.2\pm 0.1(stat.{)}_{-0.7}^{+0.6}(syst.))\%$, where the uncertainties correspond to statistical and systematic sources, respectively.

This article is published in Nuclear Inst. and Methods in Physics Research, A 887 (2018) 150-168