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Uniformity and stability of the CMS RPC detector at the LHC

Authors
Costantini, S.Beernaert, K.Cimmino, A.Garcia, G.Lellouch, J.Marinov, A.Ocampo, A.Strobbe, N.Thyssen, F.Tytgat, M.Verwilligen, P.Yazgan, E.Zaganidis, N.Dimitrov, A.Hadjiiska, R.Litov, L.Pavlov, B.Petkov, P.Aleksandrov, A.Genchev, V.Iaydjiev, P.Rodozov, M.Shopova, M.Sultanov, G.Ban, Y.Cai, J.Ge, Y.Li, Q.Qian, S.Xue, Z.Avila, C.Chaparro, L. F.Gomez, J. P.Moreno, B. GomezOliveros, A. F. OsorioSanabria, J. C.Assran, Y.Sharma, A.Abbrescia, M.Calabria, C.Colaleo, A.Loddo, F.Maggi, M.Pugliese, G.Benussi, L.Bianco, S.Colafranceschi, S.Piccolo, D.Buontempo, S.Carrillo, C.Iorio, O.Paolucci, P.Berzano, U.Gabusi, M.Vitulo, P.Kang, M.Lee, K. S.Park, S. K.Shin, S.Choi, Y.Goh, J.Kim, M. S.Seo, H.Shoaib, M.
Issue Date
Mar-2013
Publisher
IOP PUBLISHING LTD
Keywords
Performance of High Energy Physics Detectors; Resistive-plate chambers
Citation
JOURNAL OF INSTRUMENTATION, v.8
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF INSTRUMENTATION
Volume
8
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/103815
DOI
10.1088/1748-0221/8/03/P03017
ISSN
1748-0221
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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