Balancing of the rotary anode of an X-ray tube

An X-ray apparatus with an X-ray tube having a rotatable anode for generating X-rays, wherein the rotatable anode comprises:

• rotatably driven support body;
• an anode disc fixedly mounted to the rotatably driven support body;
• and
• a bearing arrangement, the support body being rotatably supported by the bearing arrangement,
• wherein the rotatable anode has at least one balancing cavity to adjust a center of gravity of the rotatable anode, wherein the balancing cavity is partly filled with a balancing material being solid at an operating temperature of the X-ray tube and liquid at a higher temperature higher than the operating temperature.

A method for balancing a rotary anode of an X-ray tube, comprising acts of:

• determining an imbalance of the rotary anode;
• heating up a balancing material which is arranged inside at least one balancing cavity, which balancing material being solid at an operating temperature of the X-ray tube and liquid at a higher temperature higher than the operating temperature, such that the balancing material becomes liquid;
• dislocating at least a part of the balancing material inside the balancing cavity such that the imbalance of the rotary anode is at least partially compensated;
• and
• cooling the balancing material, such that the balancing material becomes solid.

A non-transitory computer readable medium comprising computer instructions which, when executed by a processor, configure the processor to perform acts of:

• determining an imbalance of the rotary anode;
• heating up a balancing material arranged inside at least one balancing cavity, the balancing material being solid at an operating temperature of the X-ray tube and liquid at a higher temperature higher than the operating temperature, such that the balancing material becomes liquid;
• dislocating at least a part of the balancing material inside the balancing cavity such that the imbalance of the rotary anode is at least partially compensated;
• and
• cooling the balancing material, such that the balancing material becomes solid.