Ming-Lee Chu

Radiation hardness and lifetime studies of the VCSELs for the ATLAS SemiConductor Tracker

Studies have been performed on the radiation hardness of the type of VCSELs 2 that will be used in the ATLAS SemicConductor Tracker. The measurements were made using 30 MeVproton beams, 24 GeV /c proton beams and a gamma source. The lifetime of the devices after irradiation was studied. r 2002 Elsevier Science B.V. All rights reserved.

Optical data links for the ATLAS SCT and Pixel Detector

Abstract ATLAS (The ATLAS Technical Proposal, CERN/LHCC 94-33) is one of the large electronic particle detectors at LHC (The LHC Conceptual Design, Report- The Yellow Book, CERN/AC/95-05(LHC)) which will become operational in 2005. It is planned to use radiation tolerant optical links for the data transfer from the SemiConductor Tracker (SCT) (ATLAS Inner Detector Technical Proposal, CERN/LHCC 97-16 & CERN/LHCC 97-17). and Pixel Detector (ATLAS Pixel Detector Technical Proposal, CERN/LHCC 98-13) systems to the acquisition electronics over a distance up to 140m. The overall architecture and the performance of these optical data links are described. One of the three candidate designs for an on-detector Opto-Package is presented.