Uniformity and Stability of the CMS RPC Detector at the LHC
S. Costantini, K. Beernaert, A. Cimmino, G. Garcia, J. Lellouch, A., Marinov, A. Ocampo, N. Strobbe, F. Thyssen, M. Tytgat, P. Verwilligen, E., Yazgan, N. Zaganidis, A. Dimitrov, R. Hadjiiska, L. Litov, B. Pavlov, P., Petkov, A. Aleksandrov, V. Genchev, P. Iaydjiev, M. Rodozov
TL;DR
This paper reports on the uniformity and stability of the CMS RPC detector at the LHC, highlighting calibration procedures and environmental compensation methods to ensure reliable trigger performance during 2011 and 2012 data collection.
Contribution
It introduces a detailed calibration process and environmental correction techniques that improve the RPC detector's uniformity and stability in a high-energy physics environment.
Findings
Successful high voltage calibration for each RPC chamber
Enhanced detector stability through environmental compensation
Consistent detector performance during 2011 and 2012 data taking
Abstract
The Resistive Plate Chambers (RPCs) are employed in the CMS experiment at the LHC as dedicated trigger system both in the barrel and in the endcap. This note presents results of the RPC detector uniformity and stability during the 2011 data taking period, and preliminary results obtained with 2012 data. The detector uniformity has been ensured with a dedicated High Voltage scan with LHC collisions, in order to determine the optimal operating working voltage of each individual RPC chamber installed in CMS. Emphasis is given on the procedures and results of the High Voltage calibration. Moreover, an increased detector stability has been obtained by automatically taking into account temperature and atmospheric pressure variations in the CMS cavern.
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