Abstract: To provide an X-ray generator capable of preventing electric corrosion and exerting stable performance over long periods. The X-ray generator includes: a rotary anticathode having a rotary anticathode part and a shaft part; an anticathode accommodating case including an air-tight case part for keeping an area surrounding the rotary anticathode part in a vacuum atmosphere, and a journaling case part for rotatively supporting the shaft part via a bearing; and an electric motor to rotatably drive the anticathode (target). A water-cooled jacket, through which cooling water for cooling the rotary anticathode part and the shaft part flows, is provided in the rotary anticathode.

Abstract: To provide an X-ray generator capable of preventing electric corrosion and exerting stable performance over long periods. The X-ray generator includes: a rotary anticathode 1 having a rotary anticathode part 1a and a shaft part 1b; an anticathode accommodating case 2 including an air-tight case part 2a for keeping an area surrounding the rotary anticathode part in a vacuum atmosphere, and a journaling case part 2b for rotatively supporting the shaft part via a bearing; and an electric motor to rotatably drive the anticathode (target). A water-cooled jacket 7, through which cooling water for cooling the rotary anticathode part and the shaft part flows, is provided in the rotary anticathode.