NA62 GigaTracKer Cooling with Silicon Micro Channels

Micro channel cooling is considered to be a promising technique to cool high energy physics detectors in the future. Especially tracking detectors will need to minimize the material crossed by particles to comply with future physics demands. The flexibility of micro-fabrication processes and the high thermal efficiency, due to the large heat exchange surface allows the production of efficient heat sinks, well adapted to the needs of different detectors. As a first HEP application, the NA62 GTK silicon pixel detector will use micro channel cooling. A low temperature fluid circulates in a micro-fabricated silicon heat sink, locally thinned to 130 μm in the sensitive area of the detector.