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The CMS Tracker End-Caps integration

Abstract : The two CMS Tracker End-Caps (TECs) consist of nine disks each, totalling 6400 silicon modules mounted on 288 intermediate sub-structures: the “petals”, a carbon fiber plated honeycomb support which carries up to 28 modules arranged in seven radial rings. One of the TECs has been integrated at CERN by IPN Lyon, while the second one was assembled in RWTH-Aachen I. This contribution describes in detail the integration procedures, including: the qualification of petals before insertion, the sector by sector (18 petals) mechanical integration inside the TEC structure and the commissioning at room temperature and in the cold at -20ring operator. The problems encountered during the whole assembly procedure and their solutions will be reported as well as the final performance of the two TECs. Both are now integrated in the CMS Tracker tube together with the Inner and Outer Barrel part. We will show the noise performance obtained under these conditions.
Keywords : LHC CMS Tracker
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http://hal.in2p3.fr/in2p3-00355248
Contributor : Dominique Girod <>
Submitted on : Thursday, January 22, 2009 - 2:27:10 PM
Last modification on : Tuesday, November 19, 2019 - 2:44:43 AM

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G. Boudoul. The CMS Tracker End-Caps integration. 8th International Conference on Large Scale Applications and Radiation Hardness of Semiconductor Detectors, Jun 2007, Firenze, Italy. pp.13-16, ⟨10.1016/j.nima.2008.07.128⟩. ⟨in2p3-00355248⟩

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