Abstract: An X-ray high-voltage generator comprises: a circuit arrangement having at least one power electronics circuit part, wherein the at least one power electronics circuit part is configured to form a heat source during operation; and a two-phase cooling system having a heat sink. The at least one power electronics circuit part is directly thermally coupled to the two-phase cooling system to cool the heat source at the heat sink. The two-phase cooling system has a cooling element block that spatially surrounds a cooling channel circuit. The cooling channel circuit is at least partially filled with a working medium, and is configured to act as a heat pipe.

Abstract: A two-phase cooling system for an X-ray high-voltage generator comprises a heat sink block and a heat sink. The heat sink block spatially surrounds a cooling duct loop, wherein the cooling duct loop is at least partially filled with a working medium and is configured to act as an oscillating heat pipe. The heat sink is configured to dissipate heat from a heat source. The heat sink block includes a material including a polymer.