Electromagnetic interference containment for accelerator systems

Patent metadata

Field	Value
Publication number	US-11017975-B2
Application number	US-201916721915-A
Country	US
Kind code	B2
Filing date	Dec 20, 2019
Priority date	Aug 24, 2016
Publication date	May 25, 2021
Grant date	May 25, 2021

Abstract

An apparatus for coupling to an input connection of an electron gun, the input connection having a heater terminal and a cathode terminal, includes: a connector having a first end and a second end; wherein the first end of the connector is configured to attach to a cable; wherein the second end of the connector is configured to connect to the input connection of the electron gun; and wherein the connector comprises an opening configured to receive the heater terminal of the input connection of the electron gun.

First claim

The invention claimed is:

1. An apparatus for coupling to an input connection of an electron gun, the input connection having a heater terminal and a cathode terminal, the apparatus comprising:
a connector having a first end and a second end;
wherein the first end of the connector is configured to attach to a cable;
wherein the second end of the connector is configured to connect to the input connection of the electron gun; and
wherein the connector comprises an opening configured to receive the heater terminal of the input connection of the electron gun.

2. The apparatus of claim 1 , wherein the connector has a bullet shape.

3. The apparatus of claim 1 , wherein the first end of the connector has a cross sectional dimension that varies non-linearly as a function of a longitudinal distance along a longitudinal axis of the apparatus.

4. The apparatus of claim 1 , wherein the heater terminal comprises a pin.

5. The apparatus of claim 1 , wherein the cathode terminal of the electron gun comprises a cylindrical connector, and wherein the second end of the connector has an outer cross sectional dimension sized to fit within the cylindrical connector of the electron gun.

6. The apparatus of claim 5 , wherein the second end of the connector comprises a coil, and wherein the coil is configured to circumferentially engage the cylindrical connector of the electron gun.

7. The apparatus of claim 1 , wherein the connector comprises a first section with the opening, wherein the first section is configured for connection with a first wire from the cable.

8. The apparatus of claim 7 , wherein the connector comprises a second section configured for connection with a second wire from the cable, wherein the second section is electrically coupled to a circular structure circumferentially disposed around the first section.

9. The apparatus of claim 1 , wherein the connector comprises a first section with first plurality of connection terminals for connection with respective cathode wires from the cable.

10. The apparatus of claim 9 , wherein the connector comprises a second section with a second plurality of connection terminals for connection with respective heater wires from the cable.

11. The apparatus of claim 10 , wherein the second section is electrically coupled to a circular structure circumferentially disposed around the first section.

12. The apparatus of claim 9 , wherein the first section comprises the opening.

13. The apparatus of claim 1 , further comprising a tube disposed around the component of the electron gun.

14. The apparatus of claim 13 , wherein the tube is slidable relative to the component of the electron gun.

15. The apparatus of claim 13 , wherein the tube has a wall with a first opening and a second opening.

16. The apparatus of claim 15 , wherein the first opening and the second opening are at respective opposite sides of the tube.

17. The apparatus of claim 13 , wherein the tube is configured to contain potting material.

18. The apparatus of claim 13 , further comprising a seal structure disposed at one end of the tube, the seal structure having an opening for receiving the cable, wherein the seal structure has an inner surface, and wherein a distance between the inner surface and the cable varies along a longitudinal axis of the cable.

Assignees

• Varian Med Sys Inc

Inventors

• Trail Mark E
• Potter Rudolf H

Classifications

• H01J23/15 Primary

  Means for preventing wave energy leakage structurally associated with tube leading-in arrangements, e.g. filters, chokes, attenuating devices · CPC title

• H01J29/485

  Construction of the gun or of parts thereof (H01J29/481, H01J29/482, H01J29/484 and H01J29/487 take precedence) · CPC title

• H05K9/0049

  being metallic containers · CPC title

• H01J23/14

  Leading-in arrangements; Seals therefor · CPC title

• H05K9/005

  being nesting containers · CPC title