X-ray tubes
First Claim
Patent Images
1. An X-ray tube comprising an anode;
- an electron source arranged to generate a beam of electrons, wherein the anode comprises a hollow interior and a tubular member having a target surface thereon at which the beam of electrons can be directed;
a feed through adapted to connect the anode high voltage wherein said feed through comprises a ceramic tube having an inner end and an outer end, wherein the inner end is attached to a ceramic end cap and the outer end is attached to a metal ring, and wherein the ceramic tube is glazed with a conductive film configured to provide a 10 G ohm resistance between the inner end and outer end, and a coolant supply arranged to deliver coolant to flow through the hollow interior to cool the anode.
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Accused Products
Abstract
An X-ray tube is produced by forming a first housing section 20 from sheet metal; forming a second housing section 22 from sheet metal, mounting an electron source 18 in one of the housing sections; mounting an anode 16 in one of the housing sections; and joining the housing sections 20, 22 together to form a housing defining a chamber with the electron source 18 and the anode 16 therein.
164 Citations
11 Claims
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1. An X-ray tube comprising an anode;
- an electron source arranged to generate a beam of electrons, wherein the anode comprises a hollow interior and a tubular member having a target surface thereon at which the beam of electrons can be directed;
a feed through adapted to connect the anode high voltage wherein said feed through comprises a ceramic tube having an inner end and an outer end, wherein the inner end is attached to a ceramic end cap and the outer end is attached to a metal ring, and wherein the ceramic tube is glazed with a conductive film configured to provide a 10 G ohm resistance between the inner end and outer end, and a coolant supply arranged to deliver coolant to flow through the hollow interior to cool the anode. - View Dependent Claims (2, 3)
- an electron source arranged to generate a beam of electrons, wherein the anode comprises a hollow interior and a tubular member having a target surface thereon at which the beam of electrons can be directed;
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4. An X-ray tube comprising a housing;
- an anode within the housing, the anode comprising a hollow interior configured as a cooling duct through which coolant can be passed to cool the anode;
a coolant circuit through which coolant can be supplied to and returned from the anode;
a feed-through extending through the housing and comprising an electrical connection for connecting an electrical supply to the anode, wherein said feed through comprises a ceramic tube having an inner end and an outer end, wherein the inner end is attached to an end cap and wherein the outer end is attached to a metal ring, and wherein the ceramic tube is glazed with a conductive film configured to provide a 10 G ohm resistance between the inner end and outer end and to force a current of approximately 1 μ
A to pass through the ceramic tube during operation; and
a coolant passage arranged to form part of the coolant circuit. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11)
- an anode within the housing, the anode comprising a hollow interior configured as a cooling duct through which coolant can be passed to cool the anode;
Specification