A device for generating a magnetic field includes at least one electric coil having electric conductors that are arranged along a circular arc within a first angular range and that deviate from the circular arc within a second angular range. At least one magnetic yoke is arranged along a part of the first angular range.
1. A device for generating a magnetic field comprising:
at least one electric coil device including electric conductors arranged, in at least one cross-section of the at least one electric coil device, along a circular arc within a first angular range and deviating from the circular arc within a second angular range; and
at least one magnetic yoke arranged along at least a part of the first angular range,
wherein the at least one magnetic yoke includes a first channel section arranged inside of the at least one electric coil device and a second channel section arranged outside of the at least one electric coil device, the first and second channel sections being configured to convey a particle beam.
2. The device for generating a magnetic field of claim 1 , wherein the at least one magnetic yoke device is arranged along an entirety of the first angular range.
3. The device for generating a magnetic field of claim 1 , wherein the at least one magnetic yoke is a closed magnetic yoke.
4. The device for generating a magnetic field of claim 1 , wherein the at least one magnetic yoke includes a magnetic yoke wall disposed between the first channel section and the second channel section.
5. The device for generating a magnetic field of claim 1 , wherein the at least one magnetic yoke includes at least one of a ferromagnetic material or a portion including stacked sheet layers.
6. The device for generating a magnetic field of claim 1 , wherein the at least one electric coil device is a tubular electric coil device.
7. The device for generating a magnetic field of claim 1 , wherein the cross section is essentially perpendicular to a longitudinal axis of the at least one electric coil device.
8. The device for generating a magnetic field of claim 1 , wherein at least a part of the electrical conductors is tilted with respect to at least one of a plane of the at least one cross-section or a main axis of the at least one electric coil device, and
wherein at least a part of the electrical conductors are at least one of arranged as cosine theta magnet windings or arranged as cosine n-times theta magnet windings.
9. The device for generating a magnetic field of claim 1 , wherein the electrical conductors within the second angular range are at least one of arranged along a straight line or arranged along a curved line.
10. The device for generating a magnetic field of claim 9 , wherein the electrical conductors within the second angular range are arranged along the magnetic field lines produced by electrical conductors arranged along a fully circular line.
11. The device for generating a magnetic field of claim 1 , wherein the electrical conductors are arranged in groups that are spaced from one another.
12. The device for generating a magnetic field of claim 11 , wherein the electrical conductors include a first group of electrical conductors arranged to serve as steerer conductors, and a second group of electrical conductors arranged to serve as septum conductors.
13. The device for generating a magnetic field of claim 1 , wherein the electrical conductors at least partially neighbor the magnetic yoke device.
14. The device for generating a magnetic field of claim 1 , wherein the first angular range is less than or equal to 200°.
15. The device for generating a magnetic field of claim 1 , wherein the first angular range is less than or equal to 250°.
16. The device for generating a magnetic field of claim 1 , wherein the first angular range is less than or equal to 300°.
17. The device for generating a magnetic field of claim 1 , wherein at least a portion of the electrical conductors are arranged as one or more of: a single layer, a double later, or a stacked layer.
18. The device for generating a magnetic field of claim 1 , wherein:
a first section of the device has a low intensity magnetic field; and
a second section of the device has a high intensity magnetic field.
19. The device for generating a magnetic field of claim 1 , wherein the at least one magnetic yoke includes a metal wall disposed between the first channel section and the second channel section.
20. The device for generating a magnetic field of claim 1 , wherein the first channel section and the second channel section are each evacuated so as to contain a vacuum.
21. A magnetic switch apparatus for a particle beam accelerator comprising:
a kicker magnet device; and
a device for generating a magnetic field including:
at least one electric coil device including electric conductors arranged, in at least one cross-section of the at least one electric coil device, along a circular arc within a first angular range and deviating from the circular arc within a second angular range; and
at least one magnetic yoke arranged along at least a part of the first angular range.