8-13 August 2011
Rhode Island Convention Center
US/Eastern timezone

Studies of VCSEL failures in the optical readout systems of the ATLAS silicon trackers and Liquid Argon calorimeters

Aug 9, 2011, 5:40 PM
556 (Rhode Island Convention Center)


Rhode Island Convention Center

Parallel contribution Detector Technology and R&D Detector Technology and R&D


Mark Cooke (LBNL)


The readout systems for the ATLAS silicon trackers and liquid argon calorimeters utilize vertical-cavity surface-emitting laser (VCSEL) diodes to communicate between on and off detector readout components. A number of these VCSEL devices have ceased to function well before their expected lifetime. We summarize the failure history and present what has been learned so far about the possible causes, and present lifetime projections for the devices that have not failed.

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