Results of early phase of series production of ATLAS SCT barrel hybrids and modules

A status of early series production of the barrel hybrids and modules of the ATLAS Semiconductor Tracker (SCT) is reported. 120 hybrids (with ASIC’s) and 98 modules were fabricated in Japan by the mid. August 2002 and gone through extensive quality assurance tests. Defective channels were found much less than 1% in hybrids and still less than 1% in modules. No increase of defective channels was observed, in hybrids after 100-hours burn-in at an elevated temperature, and in modules after thermal cycling and 24-hrs long-term test at the operation temperature of the experiment.