Magnetic field concentrating and or guiding devices and methods

Patent metadata

Field	Value
Publication number	US-11280850-B2
Application number	US-202016838914-A
Country	US
Kind code	B2
Filing date	Apr 2, 2020
Priority date	Apr 2, 2020
Publication date	Mar 22, 2022
Grant date	Mar 22, 2022

Abstract

A magnetic field concentrating or guiding device can include one or more coils, and one or more foil, tape and/or bulk superconductor structures disposed in one or more predetermined positions with relation to the coils. The one or more superconductor structures can form one or more magnetic field carrying regions. During operation, current passing through the one or more coils can generate one or more magnetic fields that are compressed or guided in the magnetic field carrying regions.

First claim

What is claimed is:

1. A magnetic field concentrating or guiding device comprising:
one or more coils to generate one or more magnetic fields; and
one or more superconductor structures disposed in one or more predetermined positions with relation to the one or more coils and shaped to concentrate or guide the one or more magnetic fields.

2. The magnetic field concentrating or guiding device according to claim 1 , wherein the one or more superconductor structures comprise one or more bulk superconductor structures.

3. The magnetic field concentrating or guiding device according to claim 1 , wherein the one or more superconductor structures comprise one or more foil or tape superconductor structures.

4. The magnetic field concentrating or guiding device according to claim 1 , wherein the one or more superconductor structures comprise a combination of one or more bulk superconductor structures and one or more foil or tape superconductor structures.

5. The magnetic field concentrating or guiding device according to claim 1 , wherein the one or more superconductor structures comprise one or more high-temperature superconductor structures.

6. The magnetic field concentrating or guiding device according to claim 1 , wherein the one or more coils comprise a plurality of coils disposed to generate a plurality of magnetic fields at predetermined orientations.

7. The magnetic field concentrating or guiding device according to claim 1 , wherein the one or more superconductor structures form one or more channels lengthwise through the one or more coils.

8. The magnetic field concentrating or guiding device according to claim 7 , wherein a geometry of the one or more channels is configured to shape the one or more magnetic fields.

9. The magnetic field concentrating or guiding device according to claim 1 , further comprising:
a superconductor shield structure disposed about the one or more coils.

10. A magnetic field concentrating or guiding device comprising:
one or more conductive coils disposed about a length of a volume;
one or more structures disposed in the volume, wherein the one or more structures include a foil, tape or bulk superconductor;
a magnetic field carrying region extending lengthwise through the volume; and
one or more apertures disposed through the one or more conductive coils and the magnetic field carrying region.

11. The magnetic field concentrating or guiding device according to claim 10 , wherein the one or more apertures disposed through the magnetic field carrying region includes the magnetic field carrying region extending widthwise through the volume.

12. The magnetic field concentrating or guiding device according to claim 10 , wherein:
the magnetic field carrying region further extends widthwise through the volume; and
the one or more apertures are further disposed through the one or more conductive coils to widthwise ends of the magnetic field carrying region.

13. The magnetic field concentrating or guiding device according to claim 10 , further comprising:
a superconductor shield disposed about the one or more conductive coils.

14. The magnetic field concentrating or guiding device according to claim 13 , wherein the one or more apertures are further disposed through the superconductor shield.

15. The magnetic field concentrating or guiding device according to claim 10 , wherein a geometry of the magnetic field carrying region is a function of a specified energy range for a charged particle beam passing widthwise through the magnetic field carrying region, a specified magnetic flux range for passing lengthwise through the magnetic field carrying region, and a specified bending radius range for the charged particle beam.

16. The magnetic field concentrating or guiding device according to claim 10 , further comprising one or more coolers coupled to the plurality of foil, tape or bulk superconductor structures.

17. A magnetic field concentrating or guiding method comprising:
providing a coil; and
providing a superconductor having a channel disposed in a predetermined position with relation to the coil.

18. The magnetic field concentrating or guiding method of claim 17 , wherein the channel extends lengthwise and widthwise through an interior volume of the coil.

19. The magnetic field concentrating or guiding method of claim 17 , wherein providing the superconductor comprises providing a high temperature superconductor disposed inside the coil.

20. The magnetic field concentrating or guiding method of claim 19 , further comprising cooling the superconductor below a critical temperature of the superconductor.

21. The magnetic field concentrating or guiding method of claim 17 , wherein providing the coil comprises providing a current passing through a resistive or superconducting coil.

22. The magnetic field concentrating or guiding method of claim 21 , further comprising cooling the superconducting coil below a critical temperature of the superconducting coil.

Assignees

• Varian Medical Systems Particle Therapy Gmbh

Inventors

• Godeke Arno
• Schillo Michael

Classifications

• G01R33/20

  involving magnetic resonance (medical aspects A61B5/055; magnetic resonance gyrometers G01C19/60) · CPC title

• H01F6/06

  Coils, e.g. winding, insulating, terminating or casing arrangements therefor · CPC title

• G01R33/035

  using superconductive devices · CPC title

• G01R33/3815

  with superconducting coils, e.g. power supply therefor · CPC title

• H01F27/289

  with auxiliary windings (for pancake coils H01F27/2871) · CPC title