Patent ID: 7197118

Claim:
An X-ray apparatus comprising: an anode target which generates X-rays; an electron radiation source which generates an electron to the anode target; an electron capture trap which captures the electron recoiled by the anode target; a rotor which includes a shaft and holds the anode target; a stator which generates a driving force to rotate the rotor; a bearing which rotatably supports the rotor; an enclosure which keeps at least the anode target, electron radiation source and rotor at a predetermined vacuum; a housing which is configured to contain a cooling medium around the enclosure; a cooling medium pipe which guides a cooling medium at least inside the shaft of the rotor, in the vicinity of the electron capture trap, and in the vicinity of the anode target in that order; a pump which circulates a cooling medium in the cooling medium pipe; and a heat exchanger which radiates the heat transmitted by a cooling medium circulated by the pump.