IFLP   13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
artículos
Título:
Readiness of the ATLAS Liquid Argon Calorimeter for LHC Collisions.
Autor/es:
MARTIN TRIPIANA; THE ATLAS COLLABORATION
Revista:
EUROPEAN PHYSICAL JOURNAL C - PARTICLES AND FIELDS
Editorial:
SPRINGER
Referencias:
Año: 2010 vol. 70 p. 723 - 753
ISSN:
1434-6044
Resumen:
The ATLAS liquid argon calorimeter has been operating continuously since
August 2006. At this time, only part of the calorimeter
was readout, but since the beginning of 2008, all
calorimeter cells have been connected to the ATLAS readout system in
preparation
for LHC collisions. This paper gives an overview of the
liquid argon calorimeter performance measured in situ with random
triggers, calibration data, cosmic muons, and LHC beam
splash events. Results on the detector operation, timing performance,
electronics noise, and gain stability are presented. High
energy deposits from radiative cosmic muons and beam splash events
allow to check the intrinsic constant term of the energy
resolution. The uniformity of the electromagnetic barrel calorimeter
response along η (averaged over φ) is measured
at the percent level using minimum ionizing cosmic muons. Finally,
studies of electromagnetic showers from radiative
muons have been used to cross-check the Monte Carlo
simulation. The performance results obtained using the ATLAS readout,
data acquisition, and reconstruction software indicate that
the liquid argon calorimeter is well-prepared for collisions at
the dawn of the LHC era.