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

A highly granular electromagnetic calorimeter with scintillator strip readout is being developed for future linear collider experiments. A prototype of 21.5 X-0 depth and 180 x 180 mm(2) transverse dimensions was constructed, consisting of 2160 individually read out 10 x 45 x 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 +/- 0.1(stat.)+/- 0.4(syst.))%/root E[GeV]circle plus (1.2 +/- 0.1(stat.)(-0.7)(+0.6)(syst.))%, where the uncertainties correspond to statistical and systematic sources, respectively. (C) 2018 Elsevier B.V. All rights reserved.