The laser calibration of the ATLAS Tile Calorimeter during the LHC run 1

0469041 - FZÚ 2017 RIV GB eng J - Journal Article
Abdallah, J. - Alexa, C. - Coutinho, Y.A. - Lokajíček, Miloš - Němeček, Stanislav … Total 238 authors
The laser calibration of the ATLAS Tile Calorimeter during the LHC run 1.
Journal of Instrumentation. Roč. 11, Oct (2016), 1-31, č. článku T10005. ISSN 1748-0221. E-ISSN 1748-0221
R&D Projects: GA MŠMT(CZ) LG15047; GA MŠMT LM2015068
Institutional support: RVO:68378271
Keywords : electronics * readout * calorimeter * hadronic * calibration * laser * stability * ATLAS * data analysis method
Subject RIV: BF - Elementary Particles and High Energy Physics
Impact factor: 1.220, year: 2016

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.
Permanent Link: http://hdl.handle.net/11104/0266939