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Open Access item Alignment of the CMS muon system with cosmic-ray and beam-halo muons

Authors:Cabrillo, I. J.
Calderón, A.
Chuang, S. H.
Diaz Merino, I.
Diez González, C.
Duarte Campderros, J.
Fernández, M.
Gómez, G.
González Sánchez, J.
González Suárez, R.
Jorda, C.
Lobelle Pardo, P.
López Virto, A.
Marco, Jesús
Marco, Rafael
Martínez-Rivero, Celso
Martínez Ruiz del Arbol, P.
Matorras, Francisco
Rodrigo, Teresa
Ruiz Jimeno, Alberto
Scodellaro, Luca
Sobron Sañudo, M.
Vila, Iván
Vilar, Rocío
Keywords:Muon spectrometers, Large detector systems for particle and astroparticle physics
Issue Date:Mar-2010
Publisher:Institute of Physics Publishing
Citation:Journal of Instrumentation 5: T03020 (2010)
Abstract:The CMS muon system has been aligned using cosmic-ray muons collected in 2008 and beam-halo muons from the 2008 LHC circulating beam tests. After alignment, the resolution of the most sensitive coordinate is 80 microns for the relative positions of superlayers in the same barrel chamber and 270 microns for the relative positions of endcap chambers in the same ring structure. The resolution on the position of the central barrel chambers relative to the tracker is comprised between two extreme estimates, 200 and 700 microns, provided by two complementary studies. With minor modifications, the alignment procedures can be applied using muons from LHC collisions, leading to additional significant improvements.
Description:43 páginas, 11 figuras, 6 tablas.-- Open Access.-- CMS Collaboration: et al.
Publisher version (URL):http://dx.doi.org/10.1088/1748-0221/5/03/T03020
URI:http://hdl.handle.net/10261/45820
E-ISSNmetadata.dc.identifier.doi = DOI:1748-0221
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Appears in Collections:(IFCA) Artículos

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