Patent ID: 7050542
Filing Date: 2006-05-23
Classification: H01J,H05G

Abstract:
1. A device for generating X-rays, which device comprises a source for emitting electrons, a carrier which is rotatable about an axis of rotation and which is provided with a material which generates X-rays as a result of the incidence of electrons, a heat absorbing member arranged between the source and the carrier, and a cooling system which is in thermal connection with the heat absorbing member, wherein during operation a rate of heat absorption by the heat absorbing member is substantially larger than a rate of heat transfer via the thermal connection, wherein the thermal connection between the heat absorbing member and the cooling system comprises a thermal barrier which limits the rate of heat transfer, occurring via the thermal connection per unit of temperature difference between the heat absorbing member and the cooling system, in a predetermined manner; wherein the thermal barrier comprises a vacuum gap which is present between a radiant heat transferring surface of the heat absorbing member and a radiant heat transferring surface of the cooling system.