High intensity x-ray source using bellows
The patent describes an X-ray tube. It comprises: a frame; a vacuum chamber rotatably mounted on the frame, a first portion of the vacuum chamber being mounted on the frame for rotation about a first axis fixed with reference to the frame, a second portion of the vacuum chamber being mounted on the frame for rotation about a second axis that intersects the first axis at a single point. The first portion of the vacuum chamber being adapted to transmit rotary motion to the vacuum chamber; a bellows having a curved centering. The bellows connecting the first portion to the second portion so that the vacuum chamber is formed; an anode mounted in the first portion of the vacuum chamber and fixed relative to the chamber; a rigid member for supporting a cathode. The rigid member having an elongated portion extending into the bellows and having a centerline. The centerline in a first portion of the elongated portion coinciding with the first axis and the centerline in a second portion of the elongated portion coinciding with the second axis; a first bearing means disposed around the first portion of the elongated portion and concentric with the first axis; a second bearing means disposed around the second portion of the elongated portion and concentric with the second axis. The first bearing means and the second bearings means permitting the rotation of the vacuum chamber while constraining the rigid member in a fixed position with respect to the frame; a cathode mounted on the rigid member in the vacuum chamber in opposition to the anode; and means for heating the cathode.
- Assignee:
- Varian Associates, Inc., Palo Alto, CA
- Patent Number(s):
- US 4878235
- Application Number:
- PPN: US 7-160223A
- OSTI ID:
- 7030272
- Resource Relation:
- Patent File Date: 25 Feb 1988
- Country of Publication:
- United States
- Language:
- English
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