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 f or the central detector of the ATLAS experiment at the future Large Ha dron Colider (LHC). A thermally conductive pyrolytic graphite insert i s sandwiched between two single-sided silicon detectors to extract Jou le heat from the detector and associated electronics. We have measured a temperature profile across the detectors as a function of heating p ower at a coolant temperature of -10 degrees C and ambient temperature s of 0, -5, -10 degrees C and found that the temperature increase of t he silicon detectors is below 3 degrees C for realistic power levels.