Thermal measurements and simulations with a silicon detector-pyrolytic graphite sandwich

We have conducted thermal measurements on a Silicon-Pyrolytic Graphite microstrip detector model similar to prototype modules being tested for the central detector of the ATLAS experiment at the future Large Hadron Collider (LHC). A thermally conductive pyrolytic graphite insert is sandwiched between two single-sided silicon detectors to extract Joule heat from the detector and associated electronics. We have measured a temperature profile across the detectors 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.