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Open Access item Alignment of the CMS silicon tracker during commissioning with cosmic rays

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:Particle tracking detectors (Solid-state detectors), Large detector systems for particle and astroparticle physics
Issue Date:Mar-2010
Publisher:Institute of Physics Publishing
Citation:Journal of Instrumentation 5: T03009 (2010)
Abstract:The CMS silicon tracker, consisting of 1440 silicon pixel and 15 148 silicon strip detector modules, has been aligned using more than three million cosmic ray charged particles, with additional information from optical surveys. The positions of the modules were determined with respect to cosmic ray trajectories to an average precision of 3–4 microns RMS in the barrel and 3–14 microns RMS in the endcap in the most sensitive coordinate. The results have been validated by several studies, including laser beam cross-checks, track fit self-consistency, track residuals in overlapping module regions, and track parameter resolution, and are compared with predictions obtained from simulation. Correlated systematic effects have been investigated. The track parameter resolutions obtained with this alignment are close to the design performance.
Description:42 páginas, 15 figuras, 3 tablas.-- Open Access.-- CMS Collaboration: et al.
Publisher version (URL):http://dx.doi.org/10.1088/1748-0221/5/03/T03009
URI:http://hdl.handle.net/10261/45823
E-ISSNmetadata.dc.identifier.doi = DOI:1748-0221
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Appears in Collections:(IFCA) Artículos

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