Title: X-ray tube with ring anode and its application
Application Number: 03155050 Application Date: 2003.08.26
Publication Number: 1487560 Publication Date: 2004.04.07
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01T1/00,H01J35/08,H01J35/18,H01J35/30,H05G1/00
Applicant(s) Name: Siemens AG Address:
Inventor(s) Name: Manfred. Apel, Holg. Baur
Attorney & Agent: hou yu tao fengbei
Abstract:
     An X-ray tube has a stationary vacuum housing (1), in which are arranged an electron-emitting cathode (3) and a ring anode (4) with an impact surface (7, 22) on which the electron beam (2), accelerated by an electrical field, is incident, as well as a deflection system to focus and deflect the electron beam (2). The ray exit window (8) of the X-ray tube is round, lies in the plane perpendicular to the central axis of the X-ray tube, and terminates one side at the vacuum housing (1). The impact surface (7, 22) of the ring anode (4) is beveled and is aligned to the ray exit window (8). A diaphragm (11) is provided in front of the ray exit window (8) that defines a circular opening for the X-ray radiation (12, 13). The ring anode (4) is surrounded by an annular anode cooling arrangement (9).
Time: 9