Performance of a fine-sampling electromagnetic calorimeter prototype in the energy range from 1 to 19 GeV

TL;DR

This paper reports on the experimental testing of a fine-sampling electromagnetic calorimeter prototype across 1-19 GeV energy range, demonstrating its energy and position resolution capabilities with results aligning well with simulations.

Contribution

The study provides new experimental data on a calorimeter prototype's performance in the 1-19 GeV range, validating simulation models and showcasing its potential for particle detection.

Findings

Energy resolution of 2.8%/√E + 1.3% for electrons

Position resolution of 3.1 + 15.4/√E mm at the center of the cell

Negligible lateral non-uniformity in energy response

Abstract

The fine-sampling electromagnetic calorimeter prototype has been experimentally tested using the 1-19 GeV/c tagged beams of negatively charged particles at the U70 accelerator at IHEP, Protvino. The energy resolution measured by electrons is Delta{E}/E=2.8%/\sqrt{E} + 1.3%. The position resolution for electrons is Delta{x}=3.1 + 15.4/sqrt{E} mm in the center of the cell. The lateral non-uniformity of the prototype energy response to electrons and MIPs has turned out to be negligible. Obtained experimental results are in a good agreement with Monte-Carlo simulations.