Relative pre-calibration of the ALICE electromagnetic calorimeter EMCAL

被引：0

作者：

Faivre, J. ^{[1
]}

机构：

[1] Univ Grenoble 1, LPSC, CNRS IN2P3, Inst Polytech Grenoble, Grenoble, France

来源：

XIV INTERNATIONAL CONFERENCE ON CALORIMETRY IN HIGH ENERGY PHYSICS (CALOR 2010) | 2011年 / 293卷

关键词：

D O I：

10.1088/1742-6596/293/1/012046

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Several experiments showed that calorimetry is an essential tool for the Quark-Gluon Plasma study. ALICE, on the LHC collider, therefore integrated two electromagnetic calorimeters in its design. We will explain how the relative pre-calibration of one of them, the EMCAL, is performed thanks to cosmic muons, through an iterative procedure which consists in varying the high-voltage associated to each channel to ajust its gain. After 3 iterations of high-voltage tuning, of which each requires a day of data-taking, the dispersion (RMS over mean) of the channel amplitude of the response to a muon at minimum ionisation is found to be less than 2 %. We also show that more iterations allow to lower this value down to 1 %.

引用

页数：6

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