X-ray tube target having enhanced thermal performance and method of making same

摘要

An x-ray tube (4) includes a frame (50) enclosing a high vacuum (54), a cathode (60) positioned within the frame (50), and a target assembly (56). The target assembly (56) includes a target cap (84), a focal track material (86) positioned on the target cap (84) to receive electrons from the cathode (60), and a foam material (206) positioned within a cavity (204) of the target cap (84) and positioned proximate the focal track (86). The x-ray tube (4) also includes a bearing assembly (58) attached to the frame (50) and configured to support the target assembly (56).