Permanent magnet e-beam/x-ray horn

Patent metadata

Field	Value
Publication number	US-11291104-B2
Application number	US-202017116880-A
Country	US
Kind code	B2
Filing date	Dec 9, 2020
Priority date	May 31, 2019
Publication date	Mar 29, 2022
Grant date	Mar 29, 2022

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. An apparatus, comprising:
a magnet assembly that redirects a beam of charged particles;
a vacuum chamber that prevents the atmosphere from interfering with the charged particles; and
a parallelizing magnet array for parallelizing the beam of charged particles, wherein the parallelizing magnet array comprises a plurality of permanent magnets.

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

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

4. The apparatus of claim 1 wherein a magnetic field strength is controllable by adjusting a gap between magnetic pole faces of permanent magnets among the plurality of permanent magnets.

5. The apparatus of claim 1 wherein a 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 magnetic material, which modifies the magnetic field of the permanent magnets.

6. The apparatus of claim 1 wherein the apparatus comprises an irradiation device for irradiating an object.

7. A magnetic apparatus, comprising:
a scanning magnetic assembly that redirects a beam of charged particles; and
a parallelizing permanent magnet array for parallelizing the beam of charged particles wherein the parallelizing permanent magnet array is located proximate to a target comprising a Bremsstrahlung target, wherein the beam of charged particles is redirected by the scanning magnetic assembly to a parallel pattern after being subjected to the parallelizing permanent magnet array.

8. The magnetic apparatus of claim 7 wherein the scanning magnetic assembly comprises:
a scanning RF cavity; and
a magnetic gradient assembly coupled to the scanning RF cavity.

9. The magnetic apparatus of claim 8 wherein the magnetic gradient assembly further comprises one of:
a gradient electromagnet; and
a gradient permanent magnet.

10. The magnetic apparatus of claim 7 wherein the parallelizing magnet array comprises a plurality of permanent magnets.

11. A method, comprising:
redirecting a beam of charged particles with a scanning system engaged to a vacuum chamber that prevents atmosphere from interfering with the charged particles; and
parallelizing the beam of charged particles with a parallelizing magnet array, wherein the parallelizing permanent magnet array is located proximate to a target; and
sweeping the beam of charged particles across the target.

12. The method of claim 11 further comprising:
redirecting the beam of charged particles by the parallelizing magnet array from a diverging pattern output from the scanning system to a parallel pattern after being subjected to the parallelizing magnet array.

13. The method of claim 11 wherein the beam of charged particles comprises an electron beam.

14. The method of claim 11 wherein the beam of charged particles comprises an X-ray portion after the beam of charged particles has been subject to parallelization.

15. The method of claim 11 wherein the parallelizing 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.

16. The method of claim 15 further comprising:
adjusting field strength by adjusting a gap between magnetic pole faces of permanent magnets among the plurality of permanent magnets.

17. The method of claim 15 wherein 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 magnetic material associated with the plurality of permanent magnets.

18. The method of claim 11 wherein the magnetic apparatus comprises an irradiation device for irradiating an object.

Assignees

• Fermi Res Alliance Llc

Inventors

• Kroc Thomas

Classifications

• H05H2007/046

  for beam deflection · CPC title

• H05H7/04 Primary

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