Position resolution and particle identification with the ATLAS EM calorimeter
Roberto Sacco
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.
Create a lesson
Related papers
CMS ECAL Phase-2 upgrade: characterisation and stability analysis of a three-stage low-voltage power-conversion system
Liv Anke Richter, Günther Dissertori, Werner Lustermann et al.
CMS ECAL VFE Production Qualification
C. Borca, S. Argirò, L. T. Bulaja et al.
In-situ azimuthal sample rotation within a horizontal-field cryomagnet for small-angle neutron scattering
Matthew T. Littlehales, Andreas Bauer, Marek Bartkowiak et al.
Hydrogen Electron Cyclotron Resonance Dissociator Demonstrator for the Project 8 Experiment
Manjinder Oueslati, Walter Pettus, Anna Reine et al.
On the Electrodynamics of a Non-Contact Inductive Sensor for High-Accuracy Tip Deflection Measurements of Piezoceramic Bending Actuators and its Application for Energy Harvesting Purposes
Ruediger G. Ballas
Fast Self-Triggering and Segment-Fitting of Cosmic Muons with a small-Diameter Monitored Drift Tube Detector
Shuzhe Li, Yuxiang Guo, Jiajin Ge et al.