Permanent magnet e-beam/x-ray horn

Patent metadata

Field	Value
Publication number	US-10880984-B2
Application number	US-201916428664-A
Country	US
Kind code	B2
Filing date	May 31, 2019
Priority date	May 31, 2019
Publication date	Dec 29, 2020
Grant date	Dec 29, 2020

Abstract

A magnetic apparatus and a method of operating the magnetic apparatus can include a scanning electromagnet that redirects a beam of charged particles, a vacuum chamber that prevents the atmosphere from interfering with the charged particles; and, a parallelizing permanent magnet array for parallelizing the beam of charged particles. The parallelizing permanent magnet array can be located proximate to a target comprising a Bremsstrahlung target or an object that is being irradiated. The magnetic field of the scanning electromagnet can be variable to produce all angles necessary to sweep the beam of charged particles across the target and the parallelizing permanent magnet array can be configured from a magnetic material that does not require an electric current.

First claim

What is claimed is:

1. A magnetic apparatus, comprising:
a scanning electromagnet that redirects a beam of charged particles;
a vacuum chamber that prevents the atmosphere from interfering with the charged particles; and
a parallelizing permanent magnet array for parallelizing the beam of charged particles including any uniformly diverging beam, wherein the parallelizing permanent magnet array is located proximate to a target comprising a Bremsstrahlung target or an object that is being irradiated and is further located within or outside the vacuum chamber, wherein a magnetic field of the scanning electromagnet is variable to produce all angles necessary to sweep the beam of charged particles across the target and wherein the parallelizing permanent magnet array is configured from a magnetic material that does not require an electric current.

2. The magnetic apparatus of claim 1 wherein the beam of charged particles is redirected by the parallelizing permanent magnet array from a diverging pattern output from the scanning electromagnet to a parallel pattern after being subjected to the parallelizing permanent magnet array.

3. The magnetic apparatus of claim 1 wherein the beam of charged particles comprises an electron beam.

4. The magnetic apparatus of claim 1 wherein the beam of charged particles comprises an optional x-ray portion after the beam of charged particles has been subject to parallelization.

5. The magnetic apparatus of claim 1 wherein the parallelizing permanent magnet array comprises a plurality of permanent magnets, wherein the plurality of permanent magnets is adjustable to compensate for a degradation of magnetic field strength over time.

6. The magnetic apparatus of claim 5 wherein the magnetic field strength remains constant over a period of time by adjusting a gap between magnetic pole faces of permanent magnets among the plurality of permanent magnets.

7. The magnetic apparatus of claim 5 wherein the magnetic field strength is adjustable by at least one of:
adjusting a gap between at least two poles of permanent magnets in the plurality of permanent magnets; or
adding, removing or moving the magnetic material, which modifies the magnetic field of the permanent magnets, wherein the magnetic material is selected based on a magnetic permeability.

8. The magnetic apparatus of claim 5 wherein the magnetic apparatus comprises an irradiation device for irradiating an object.

9. A magnetic apparatus, comprising:
a scanning electromagnet that redirects a beam of charged particles;
a vacuum chamber that prevents the atmosphere from interfering with the charged particles; and
a parallelizing permanent magnet array for parallelizing the beam of charged particles including any uniformly diverging beam, wherein the parallelizing permanent magnet array is located proximate to a target comprising a Bremsstrahlung target or an object that is being irradiated and is further located within or outside the vacuum chamber, wherein a magnetic field of the scanning electromagnet is variable to produce all angles necessary to sweep the beam of charged particles across the target and wherein the parallelizing permanent magnet array is configured from a magnetic material that does not require an electric current, wherein the beam of charged particles is redirected by the parallelizing permanent magnet array from a diverging pattern output from the scanning electromagnet to a parallel pattern after being subjected to the parallelizing permanent magnet array.

10. The magnetic apparatus of claim 9 wherein the beam of charged particles comprises an electron beam.

11. The magnetic apparatus of claim 9 wherein the beam of charged particles comprises an optional x-ray portion after the beam of charged particles has been subject to parallelization.

12. The magnetic apparatus of claim 9 wherein:
the parallelizing permanent magnet array comprises a plurality of permanent magnets, wherein the plurality of permanent magnets is adjustable to compensate for a degradation of magnetic field strength over time;
the magnetic field strength is adjustable by at least one of:
adjusting a gap between at least two poles of permanent magnets in the plurality of permanent magnets; or
adding, removing or moving the magnetic material, which modifies the magnetic field of the permanent magnets, wherein the magnetic material is selected based on a magnetic permeability.

13. A method of operating a magnetic apparatus, comprising:
redirecting a beam of charged particles with a scanning electromagnet that engages a vacuum chamber that prevents the atmosphere from interfering with the charged particles; and
parallelizing the beam of charged particles including any uniformly diverging beam with a parallelizing permanent magnet array, wherein the parallelizing permanent magnet array is located proximate to a target comprising a Bremsstrahlung target or an object that is being irradiated and which is further located within or outside the vacuum chamber, wherein a magnetic field of the scanning electromagnet is variable to produce all angles necessary to sweep the beam of charged particles across the target and wherein the parallelizing permanent magnet array is configured from a magnetic material that does not require an electric current.

14. The method of claim 13 further comprising redirecting the beam of charged particles by the parallelizing permanent magnet array from a diverging pattern output from the scanning electromagnet to a parallel pattern after being subjected to the parallelizing permanent magnet array.

15. The method of claim 13 wherein the beam of charged particles comprises an electron beam.

16. The method of claim 13 wherein the beam of charged particles comprises an x-ray portion after the beam of charged particles has been subject to parallelization.

17. The method of claim 13 wherein the parallelizing permanent magnet array comprises a plurality of permanent magnets, wherein the plurality of permanent magnets is adjustable to compensate for a degradation of magnetic field strength over time.

18. The method of claim 17 wherein the magnetic field strength remains constant by adjusting a gap between magnetic pole faces of permanent magnets among the plurality of permanent magnets.

19. The method of claim 17 wherein the magnetic field strength is adjustable by:
adjusting a gap between at least two poles of permanent magnets in the plurality of permanent magnets; or
adding, removing or moving the magnetic material, which modifies the magnetic field of the permanent magnets, wherein the magnetic material is selected based on a magnetic permeability.

20. The method of claim 13 wherein the magnetic apparatus comprises an irradiation device for irradiating an object.

Assignees

• Fermi Res Alliance Llc

Inventors

• Kroc Thomas

Classifications

• H05H7/04 Primary

  Magnet systems {, e.g. undulators, wigglers (free-electron laser H01S3/0903)}; Energisation thereof · CPC title

• H05H2007/046

  for beam deflection · CPC title