Position resolution and particle identification with the ATLAS EM calorimeter
Instrumentation and Detectors
2019-08-14 v1
Abstract
In the years between 2000 and 2002 several pre-series and series modules of the ATLAS EM barrel and end-cap calorimeter were exposed to electron, photon and pion beams. The performance of the calorimeter with respect to its finely segmented first sampling has been studied. The polar angle resolution has been found to be in the range 50-60 mrad/sqrt(E (GeV)). The neutral pion rejection has been measured to be about 3.5 for 90% photon selection efficiency at pT=50 GeV/c. Electron-pion separation studies have indicated that a pion fake rate of (0.07-0.5)% can be achieved while maintaining 90% electron identification efficiency for energies up to 40 GeV.
Keywords
Cite
@article{arxiv.physics/0505127,
title = {Position resolution and particle identification with the ATLAS EM calorimeter},
author = {Roberto Sacco},
journal= {arXiv preprint arXiv:physics/0505127},
year = {2019}
}
Comments
32 pages, 22 figures, to be published in NIM A