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Position resolution for the CMS barrel pixel detector after irradiation


Alagöz, E; et al; Amsler, C; Chiochia, V; Meier, B (2009). Position resolution for the CMS barrel pixel detector after irradiation. Nuclear Physics B - Proceedings Supplements, 197(1):180-184.

Abstract

The CMS barrel pixel detector is the innermost tracking device, reconstructing the interaction vertices and charged particle trajectories. At the LHC design luminosity, 1034 cm−2 s−1, there will be 1000 charged particles per bunch crossing every 25 ns. In the innermost layer the pixel sensors will be exposed to a fluence of 3×1014neq/cm2/yr with consequent degradation of the silicon lattice structure and particle detection performances. Beam tests of irradiated pixel sensors were performed at CERN with the final front end electronics in a 3T magnetic field. We present the measurements of charge collection and radiation hardness, as well as spatial resolution.

The CMS barrel pixel detector is the innermost tracking device, reconstructing the interaction vertices and charged particle trajectories. At the LHC design luminosity, 1034 cm−2 s−1, there will be 1000 charged particles per bunch crossing every 25 ns. In the innermost layer the pixel sensors will be exposed to a fluence of 3×1014neq/cm2/yr with consequent degradation of the silicon lattice structure and particle detection performances. Beam tests of irradiated pixel sensors were performed at CERN with the final front end electronics in a 3T magnetic field. We present the measurements of charge collection and radiation hardness, as well as spatial resolution.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2009
Deposited On:18 Feb 2011 14:23
Last Modified:05 Apr 2016 14:46
Publisher:Elsevier
ISSN:0920-5632
Additional Information:11th Topical Seminar on Innovative Particle and Radiation Detectors (IPRD08)
Publisher DOI:10.1016/j.nuclphysbps.2009.10.062

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