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arXiv · 1608.02791

The Laser calibration of the Atlas Tile Calorimeter during the LHC run 1

ATLAS Tile Calorimeter system
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Abstract

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.

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ATLAS Tile Calorimeter system. 2016-08-09. The Laser calibration of the Atlas Tile Calorimeter during the LHC run 1. https://doi.org/10.1088/1748-0221/11/10/t10005

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