Detector arrangement of an ionizing radiation detecting detector of an imaging system with air cooling and method for cooling the detector array

摘要

Detector arrangement of an ionizing radiation detecting detector of an imaging system, comprising: 1.1. a detector carrier (1), 1.2. a plurality of detector modules (2), 1.3 attached to the detector carrier. a collimator (3), 1.4 arranged in the beam direction in front of the detector modules (2). the detector arrangement being arranged on a gantry rotating about a z-axis and having its greatest longitudinal extension in the circumferential direction, and1.5. the detector modules comprise measuring sensors (8) with a sensor material arranged on the side of an incident radiation to be measured, wherein1.6. the measuring sensors (8) comprise sensor material which converts X-ray radiation directly into electrical charge and the detector modules (2) have circuit arrangements which determine the energy and the number of incident photons, characterized in that 1.7. between the collimator (3) and the measuring sensors (8) of the detector modules (2) at least one cooling channel (7) arranged for the passage of cooling air and is designed such that the cooling air passes directly over the sensor material and thus resulting there heat, at least during operation steadily discharged directly to the cooling air, where1.8. a cooling channel (7) as well as a supply air duct (5a) and an exhaust air duct (5b) are provided for each detector module (2), so that an individual cooling air flow can be allocated to each detector module (2) selectively by means of adjustable throttle elements, and1.9. and the supply air ducts (5a) and the exhaust air ducts (5b) are each arranged on the same side of the detector modules (2) such that a cooling air flow is created parallel to the z axis.