Calice Si-W EM Calorimeter: Preliminary Results of the Testbeams 2006

TL;DR

This paper reports on the preliminary testbeam results of the CALICE Si-W electromagnetic calorimeter, demonstrating its calibration, uniformity, and performance with various particle beams at DESY and CERN in 2006.

Contribution

First detailed testbeam results of the CALICE Si-W ECAL, including calibration, uniformity, and hardware performance analysis.

Findings

Good calibration uniformity across channels

High-statistics data enables detailed performance characterization

Identification of subtle hardware effects

Abstract

The CALICE Si-W electromagnetic calorimeter has been tested with electron beams (1 to 6 GeV) at DESY in May 2006, as well as electrons (6 to 45 GeV) and hadrons (6 to 80 GeV) at CERN in August and October 2006. Several millions of events have been taken at different incident angles and three beam impact positions. The ECAL calibration is performed with muon beams and shows a good uniformity for nearly all channels. The large statistics available allows not only to characterise the ECAL physics performance, but also to identify subtle hardware effects.