Serial Powering of Silicon Strip Modules for the ATLAS Tracker Upgrade

Serial Powering is a powering solution to the issues of costs, difficulties and inefficiencies associated with the cabling of large detector systems. This powering option is being actively pursued by the ATLAS Tracker upgrade community. Demonstrator supermodules have been produced using the ABCD chip from the present ATLAS SCT together with serial powering circuitry built from commercial components. Two six modules stave systems have been built, and construction of a third stave consisting of thirty modules has been designed and construction is in progress. Recent results from these supermodules have been discussed. New ASICs have been designed that include elements of the serial powering scheme, and studies of system issues are ongoing. These developments and their application to the next demonstrator supermodule will be outlined.