A control and monitor system for serial powering of silicon strip detectors at SLHC

A serial powering scheme is a promising solution to reduce the total power, number of cables, passive detector material and overall the cost for large-scale silicon tracking detectors. We present a control and monitor system for a serial powering scheme where the low-voltage lines of detector modules are chained in series and the power is supplied by a single current source. The voltage for each module is regulated using a local shunt regulator. We propose to implement MOS FETs to monitor and control to optimize the current passing through the shunt regulator. They also function as a bypass in case where the module in a chain needs to be excluded.