公开(公告)号：US20210159383A1

公开(公告)日：2021-05-27

申请号：US17167641

申请日：2021-02-04

Applicant: TOKAMAK ENERGY LTD

Inventor： Martin WILSON ,  Paul NOONAN

IPC: H01L39/14 ,  H01F6/06 ,  G21B1/05 ,  H01B12/16 ,  H01F41/04

Abstract: A segment of a field coil, a toroidal field coil, and a method of manufacturing is provided. The segment of a field coil is for use in a superconducting electromagnet. The segment includes an assembly for carrying electrical current in a coil of a magnet. The assembly includes a pre-formed housing comprising a channel configured to retain high temperature superconductor (HTS) tape, the channel including at least one pre-formed curved section. The assembly further includes a plurality of layers of HTS tape fixed within the channel. Wherein the pre-formed curved section has a radius of curvature which is less than a total thickness of the layers of HTS tape in that section divided by twice a maximum permitted strain of the HTS tape.

公开(公告)号：US20180286551A1

公开(公告)日：2018-10-04

申请号：US15757040

申请日：2016-09-02

Applicant: TOKAMAK ENERGY LTD

Inventor： Elwyn BAYNHAM ,  Paul NOONAN

IPC: H01F6/06 ,  H01F6/04 ,  G21B1/05

Abstract: Disclosed herein is a support structure for a field coil comprising high temperature superconductor, HTS. The support structure comprises an internal load transfer member configured to attach at one end to the field coil and at another end to an inner surface of a vacuum vessel containing the field coil and configured to support the field coil. At least part of the internal load transfer member is configured to remain at room temperature during operation of the HTS magnet and is not cooled by the cooling system used to cool the field coil.

公开(公告)号：US20180261753A1

公开(公告)日：2018-09-13

申请号：US15757099

申请日：2016-09-05

Applicant: TOKAMAK ENERGY LTD

Inventor： Martin WILSON ,  Paul NOONAN

IPC: H01L39/14 ,  G21B1/05 ,  H01F6/06 ,  H01B12/16 ,  H01F41/04

CPC classification number: H01L39/143 ,  G21B1/057 ,  H01B12/16 ,  H01F6/06 ,  H01F41/048 ,  Y02E30/128

Abstract: There is disclosed an assembly for carrying electrical current in a coil of a magnet. The assembly comprises a pre-formed housing of thermally and electrically conductive material (e.g. copper) which comprises a channel configured to retain HTS tape. A plurality of layers of HTS tape are fixed within the channel. The channel has at least one pre-formed curved section.

公开(公告)号：US20180261366A1

公开(公告)日：2018-09-13

申请号：US15757130

申请日：2016-09-01

Applicant: TOKAMAK ENERGY LTD

Inventor： Charles MONROE ,  Paul NOONAN

IPC: H01F6/04 ,  G21B1/21 ,  G01R33/38

CPC classification number: H01F6/04 ,  G01R33/3804 ,  G21B1/00 ,  G21B1/11 ,  G21B1/21

Abstract: A cooling system for use in a superconducting magnet comprising a high temperature superconductor, HTS, coil. The cooling system comprises a refrigeration unit, one or more coolant channels, and a pumping unit. The refrigeration unit is configured to cool a gas, wherein the gas is hydrogen or helium. The one or more coolant channels are configured to be placed in thermal contact with components of the superconducting magnet and to carry said gas. The pumping unit is configured to pump said gas through the coolant channels. The refrigeration unit and pumping unit are configured to maintain the gas at a pressure and temperature such that a Joule-Thompson coefficient of the gas is positive, and the coolant channel is configured to reduce the pressure of gas as it flows through the channel by one or more of a throttle, a valve, and choice and/or variance of a cross section of the coolant channel.

公开(公告)号：US20180248357A1

公开(公告)日：2018-08-30

申请号：US15757187

申请日：2016-09-02

Applicant: TOKAMAK ENERGY LTD

Inventor： John ROSS ,  Paul NOONAN

IPC: H02H7/00 ,  H01F6/06

Abstract: A method of protecting a superconducting magnet from quenches, the superconducting magnet having at least one primary coil comprising high temperature superconductor, HTS, material. A secondary HTS tape is provided, the secondary HTS tape being in proximity to and electrically insulated from the primary coil, and being configured to cease superconducting at a lower temperature than the primary coil during operation of the magnet. A loss of superconductivity in the secondary HTS tape is detected. In response to said detection, energy is dumped from the primary coil into an external resistive load.