Radiation damage effects on CMS-sensors quality assurance and irradiation tests

The LHC at CERN (Geneva, Switzerland) is a proton-proton collider with a luminosity of 10/sup 34/ (1/cm/sup 2/s) be working for 10 years (starting in 2007). CMS will be one of the general purpose detectors. The CMS tracker consists of 10 barrel layers, plus 2 times 9 endcap disks, all together 24328...

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Bibliographic Details
Main Authors: Furgeri, A.J., Assouak, S., de Boer, W., Forton, E., Hartmann, F., Freudenstein, S.
Format: Conference Proceeding
Language:English
Subjects:
Collision mitigation
Detectors
Large Hadron Collider
Protons
Qualifications
Quality assurance
Runtime
Silicon
Testing
Time of arrival estimation
Online Access:Request full text
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Summary:The LHC at CERN (Geneva, Switzerland) is a proton-proton collider with a luminosity of 10/sup 34/ (1/cm/sup 2/s) be working for 10 years (starting in 2007). CMS will be one of the general purpose detectors. The CMS tracker consists of 10 barrel layers, plus 2 times 9 endcap disks, all together 24328 silicon sensors with a total area of 206m/sup 2/ silicon, covering a pseudorapidity of /spl eta/ /spl les/ 2.5. For the sensors close to the beam pipe fluences of 1.6 10/sup 14/ (n1MeV/cm/sup 2/) are expected over the 10 years lifetime. To guarantee the functionality of the single side silicon sensors during the runtime of LHC a quality assurance was developed. In the 2 Irradiation Qualification Centers (IQC) in Karlsruhe (Germany) and Louvain-la-Neuve (Belgium) a fraction of 1% of the sensors are electrically qualified. In Karlsruhe the sensors are irradiated with 26 MeV - protons and in Louvain-la-Neuve with fast neutrons. For safety reasons sensors are irradiated with a fluence 50% higher than predicted. The electrical parameters are determined before and after irradiation.
ISSN:1082-3654
2577-0829
DOI:10.1109/NSSMIC.2003.1352116