PT Journal
AU ATLAS Tile Calorimeter System (Abdallah, Jea
   Ferrer, A
   Fiorini, L
   Hernandez Jimenez, Y
   Higon-Rodriguez, E
   Ruiz-Martinez, A
   Solans, CA
   Valero, A
   Valladolid Gallego, E
   Valls Ferrer, JA
TI The Laser calibration of the ATLAS Tile Calorimeter during the LHC run 1
SO Journal of Instrumentation
JI J. Instrum.
PY 2016
BP T10005 - 29pp
VL 11
DI 10.1088/1748-0221/11/10/T10005
LA English
DE Detector alignment and calibration methods (lasers; sources; particle-beams); Calorimeters; Performance of High Energy Physics Detectors
AB This article describes the Laser calibration system of the ATLAS hadronic Tile Calorimeter that has been used during the run 1 of the LHC. First, the stability of the system associated readout electronics is studied. It is found to be stable with variations smaller than 0.6 %. Then, the method developed to compute the calibration constants, to correct for the variations of the gain of the calorimeter photomultipliers, is described. These constants were determined with a statistical uncertainty of 0.3 % and a systematic uncertainty of 0.2 % for the central part of the calorimeter and 0.5 % for the end-caps. Finally, the detection and correction of timing mis-configuration of the Tile Calorimeter using the Laser system are also presented.
ER