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Construction and Performance of Large-Area Triple-GEM Prototypes for Future Upgrades of the CMS Forward Muon System

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arxiv 1111.7249 v1 pith:OYO7GQRV submitted 2011-11-30 physics.ins-det hep-ex

Construction and Performance of Large-Area Triple-GEM Prototypes for Future Upgrades of the CMS Forward Muon System

M. Tytgat , A. Marinov , N. Zaganidis , Y. Ban , J. Cai , H. Teng , A. Mohapatra , T. Moulik
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M. Abbrescia A. Colaleo G. de Robertis F. Loddo M. Maggi S. Nuzzo S. A. Tupputi L. Benussi S. Bianco S. Colafranceschi D. Piccolo G. Raffone G. Saviano M.G. Bagliesi R. Cecchi G. Magazzu E. Oliveri N. Turini T. Fruboes D. Abbaneo C. Armagnaud P. Aspell S. Bally U. Berzano J. Bos K. Bunkowski J. P. Chatelain J. Christiansen A. Conde Garcia E. David R. De Oliveira S. Duarte Pinto S. Ferry F. Formenti L. Franconi A. Marchioro K. Mehta J. Merlin M. V. Nemallapudi H. Postema A. Rodrigues L. Ropelewski A. Sharma N. Smilkjovic M. Villa M. Zientek A. Gutierrez P. E. Karchin K. Gnanvo M. Hohlmann M. J. Staib
This is my paper
classification physics.ins-det hep-ex
keywords muonwilldetectorprototypessystemtriple-gemcernconstruction
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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At present, part of the forward RPC muon system of the CMS detector at the CERN LHC remains uninstrumented in the high-\eta region. An international collaboration is investigating the possibility of covering the 1.6 < |\eta| < 2.4 region of the muon endcaps with large-area triple-GEM detectors. Given their good spatial resolution, high rate capability, and radiation hardness, these micro-pattern gas detectors are an appealing option for simultaneously enhancing muon tracking and triggering capabilities in a future upgrade of the CMS detector. A general overview of this feasibility study will be presented. The design and construction of small (10\times10 cm2) and full-size trapezoidal (1\times0.5 m2) triple-GEM prototypes will be described. During detector assembly, different techniques for stretching the GEM foils were tested. Results from measurements with x-rays and from test beam campaigns at the CERN SPS will be shown for the small and large prototypes. Preliminary simulation studies on the expected muon reconstruction and trigger performances of this proposed upgraded muon system will be reported.

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