# US 2018/0024210 A1 · Superconducting magnet arrangement for magnetic resonance imaging scanner > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0024210 A1 - Document ID: US20180024210A1 - Status: Published application - Kind: A1 - Application number: 15/546,314 - Filed: 2016-01-27 - Published: 2018-01-25 - Earliest claimed: 2015-01-27 - Assignees: Siemens Healthcare GmbH - Applicants: Siemens Healthcare Limited - Inventors: Oliver Heid - Web page: https://patentgrep.com/patent/US20180024210A1 ## CPC - G01R 33/3815: with superconducting coils, e.g. power supply therefor - F17C 3/085: {Cryostats} - G01R 33/3802: {Manufacture or installation of magnet assemblies; Additional hardware for transportation or installation of the magnet assembly or for providing mechanical support to components of the magnet assembly} - G01R 33/3804: {Additional hardware for cooling or heating of the magnet assembly, for housing a cooled or heated part of the magnet assembly or for temperature control of the magnet assembly} - H01F 6/06: Coils, e.g. winding, insulating, terminating or casing arrangements therefor - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) - F17C: VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES (storing fluids in natural or artificial cavities or chambers in the earth B65G5/00; construction or assembling of bulk storage containers employing civil-engineering techniques E04H7/00; variable-capacity gas-holders F17B; liquefaction or refrigeration machines, plants, or systems F25) - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES ## Abstract A superconducting magnetic arrangement includes a magnetic coil unit. The magnetic coil unit includes a number of superconducting magnetic coils and a cryostat with an insulating vessel for cooling the magnetic coil unit. The magnetic coil unit is arranged in a vacuum in the insulating vessel. The magnetic coil unit is held in the interior of the insulating vessel by a maximum of six longitudinal bearing elements that each extend between the magnetic coil unit and the insulating vessel such that a rotary movement and a translatory movement of the magnetic coil unit relative to the insulating vessel is restrained by the bearing elements. ## Claims ### Claim 1 A superconducting magnetic arrangement comprising: a magnetic coil unit comprising superconducting magnetic coil; and an insulating vessel, wherein the magnetic coil unit is arranged in the insulating vessel, wherein the magnetic coil unit is held in an interior of the insulating vessel by a maximum of six longitudinal bearing elements, each of the longitudinal bearing elements being between the magnetic coil unit and the insulating vessel such that a rotary movement and a translatory movement of the magnetic coil unit relative to the insulating vessel is restrained by the longitudinal bearing elements. ### Claim 2 (depends on 1) The superconducting magnetic arrangement of claim 1, wherein the insulating vessel is a vacuum vessel. ### Claim 3 (depends on 1) The superconducting magnetic arrangement of claim 1, wherein the magnetic coil unit is held by six longitudinal bearing elements in the interior of the insulating vessel. ### Claim 4 (depends on 1) The superconducting magnetic arrangement of claim 1, wherein the longitudinal bearing elements are attached to the insulating vessel and the magnetic coil unit such that the longitudinal bearing elements are exposed to stress in a longitudinal direction. ### Claim 5 (depends on 4) The superconducting magnetic arrangement of claim 4, wherein each of the longitudinal bearing elements is exposed to tensile stress or compressive stress. ### Claim 6 (depends on 5) The superconducting magnetic arrangement of claim 5, wherein each of the longitudinal bearing elements is exposed to compressive stress. ### Claim 7 (depends on 1) The superconducting magnetic arrangement of claim 1, wherein none of the longitudinal bearing elements is parallel to another of the longitudinal bearing elements in a longitudinal direction. ### Claim 8 (depends on 1) The superconducting magnetic arrangement of claim 1, wherein the magnetic coil unit has two opposite ends, and the magnetic coil unit is surrounded by the insulating vessel, and wherein the longitudinal bearing elements are attached to first attachment points on the magnetic coil unit and to second attachment points on the insulating vessel. ### Claim 9 (depends on 8) The superconducting magnetic arrangement of claim 8, wherein the magnetic coil unit is cylindrical about an axis, the insulating vessel is cylindrical about the axis, or the magnetic coil and the insulating vessel are cylindrical about the axis. ### Claim 10 (depends on 9) The superconducting magnetic arrangement of claim 9, wherein one end of each of the longitudinal bearing elements is attached to a ring on the insulating vessel at first respective attachment points, and another end of each of the longitudinal bearing elements is attached at a second respective attachment point on the magnetic coil unit, wherein the ring extends perpendicularly to the axis of the magnetic coil unit, and a first subset of the second respective attachment points on the magnetic coil unit are partially offset toward one end and a second subset of the second respective attachment points on the housing of the magnetic coil unit are partially offset toward another end of the magnetic coil unit relative to the ring. ### Claim 11 (depends on 10) The superconducting magnetic arrangement of claim 10, wherein the ring is one or more projections extending from the insulating vessel into the interior of the insulating vessel. ### Claim 12 (depends on 10) The superconducting magnetic arrangement of claim 10, wherein the second attachment points of the longitudinal bearing elements are arranged on the ring symmetrically around a circumference of the ring. ### Claim 13 (depends on 10) The superconducting magnetic arrangement of claim 10, wherein two of the longitudinal bearing elements extend in the longitudinal direction from the ring towards the one end of the magnetic coil unit, and four of the longitudinal bearing elements extend in the longitudinal direction from the ring towards the other end of the magnetic coil unit. ### Claim 14 (depends on 10) The superconducting magnetic arrangement of claim 10, wherein three pairs of the longitudinal bearing elements are provided, wherein the longitudinal bearing elements of a respective pair are attached at attachment points offset with respect to one another along the circumference of the ring and converge toward each other in a V-shape in a direction of an end of the magnetic coil unit, wherein the longitudinal bearing elements of a pair extend in the direction of the one end of the magnetic coil unit and the longitudinal bearing elements of the other two pairs of the longitudinal bearing elements extend in the direction of the other end of the magnetic coil unit, and wherein the longitudinal bearing elements of a respective pair are attached to the same attachment point on the magnetic coil unit. ### Claim 15 (depends on 14) The superconducting magnetic arrangement of claim 14, wherein the three pairs of the longitudinal bearing elements are arranged adjacent to one another in the circumferential direction of the ring, and wherein adjacent longitudinal bearing elements of different pairs of the longitudinal bearing elements in the circumferential direction are attached to the same attachment point on the ring. ### Claim 16 (depends on 8) The superconducting magnetic arrangement of claim 8, wherein the longitudinal bearing elements extend from respective attachment points on the magnetic coil unit to respective attachment points on the insulating vessel such that the magnetic coil unit is supported by the longitudinal bearing elements, with a cylindrical axis extending in a horizontal plane. ### Claim 17 (depends on 16) The superconducting magnetic arrangement of claim 16, wherein the longitudinal bearing elements extend inclined to the horizontal plane. ### Claim 18 (depends on 16) The superconducting magnetic arrangement of claim 16, wherein the attachment points of the longitudinal bearing elements are arranged offset to one another on the magnetic coil unit at least partially in the axial direction of the magnetic coil unit. ### Claim 19 (depends on 1) The superconducting magnetic arrangement of claim 1, wherein three pairs of the longitudinal bearing elements are provided, wherein the longitudinal bearing elements of a respective pair of the longitudinal bearing elements are attached to different attachment points on the magnetic coil unit and converge toward one another in a V-shape toward the insulating vessel, and wherein the longitudinal bearing elements of a respective pair of the longitudinal bearing elements are attached to the same attachment point on the insulating vessel, and two longitudinal bearing elements of two different pairs of the longitudinal bearing elements are attached to the same attachment point on the magnetic coil unit. ### Claim 20 (depends on 16) The superconducting magnetic arrangement of claim 16, wherein the attachment points of the longitudinal bearing elements on the magnetic coil unit form a first triangle and, in a top view, the attachment points of the bearing elements on the insulating vessel form a second triangle, and wherein, in the top view, the first triangle is offset with respect to the second triangle in the vertical direction. ### Claim 21 (depends on 20) The superconducting magnetic arrangement of claim 20, wherein the first triangle is offset by rotation by approximately 180°. ### Claim 22 (depends on 20) The superconducting magnetic arrangement of claim 20, wherein the magnetic coil unit is cylindrical about an axis and the attachment points of the longitudinal bearing elements on the magnetic coil unit, and the attachment points of the longitudinal bearing elements on the insulating vessel, and the longitudinal bearing elements, are located below the axis in the vertical direction. ### Claim 23 (depends on 1) The superconducting magnetic arrangement of claim 1, wherein the longitudinal bearing elements are rods or loops that are exposed to tensile, compressive, or tensile and compressive stress, and wherein the loops are O-shaped or in the shape of a figure eight. ### Claim 24 (depends on 1) The superconducting magnetic arrangement of claim 1, wherein each of the longitudinal bearing elements includes a non-linear spring element or is configured as a non-linear spring element, wherein a spring stiffness of the non-linear spring element reduces in a longitudinal direction of the respective bearing element when forces exerted on the respective longitudinal bearing element exceed forces exerted on the longitudinal bearing elements in the resting position of the magnetic arrangement. ### Claim 25 (depends on 24) The superconducting magnetic arrangement of claim 24, wherein the non-linear spring elements in the respective longitudinal bearing elements are arranged closer to the insulating vessel than to the magnetic coil unit.