Reliability of fibre-optic data-links in the CMS experiment

by Karl Gill (CERN)

Friday 11 Jul 2003, 11:00 → 12:00 Europe/Zurich

13/2-005 (CERN)

Several large optical link systems, totaling over 50 thousand fibre channels, are now being constructed for the CMS experiment. Many parts of these complex systems will be inaccessible and, worse still, exposed to large radiation doses over their intended 10-year lifetime. A variety of reliability issues have therefore been confronted and solved, at component and system level, during the development and pre-production phases of the CMS optical link projects. The presentation will review the experience over the last 10 years particularly in the CERN-CMS Tracker analogue and digital optical link projects. The current understanding of radiation effects in fibre-optic and opto-electronic components and systems will be summarized, along with a discussion of appropriate techniques for damage mitigation. The implications of using commercial off-the-shelf parts will be discussed, along with the definition of appropriate reliability test-procedures.

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