Silicon detector-pyrolytic graphite sandwich

We have conducted thermal measurements on a thermal prototype of a novel concept to construct silicon modules, using thermally conductive Pyrolytic Graphite as a heat spreader sandwiched between two single-sided silicon detectors. We have measured the temperature profile as a function of heating power at a coolant temperature of -10/spl deg/C and ambient temperatures of 0, -5, -10/spl deg/C and found that the temperature increase of the silicon detectors is below 3/spl deg/C for realistic power levels.