A pressure-quench techniques at chosen pressures and temperatures to lock in the high-pressure-induced superconducting phase and/or non-superconducting phase in high-temperature superconductors (HTS) and room-temperature superconductors (RTS) at ambient pressure are disclosed. The techniques remove the formidable obstacle to the ubiquitous practical application of HTS and RTS. The technique successfully retain the high-pressure-induced/-enhanced high Tc and/or non-superconducting properties of HTS or RTS.

A pressure-quench techniques at chosen pressures and temperatures to lock in the high-pressure-induced superconducting phase and/or non-superconducting phase in high-temperature superconductors (HTS) and room-temperature superconductors (RTS) at ambient pressure are disclosed. The techniques remove the formidable obstacle to the ubiquitous practical application of HTS and RTS. The technique successfully retain the high-pressure-induced/-enhanced high Tc and/or non-superconducting properties of HTS or RTS.

A quench protection arrangement for a superconducting magnet is disclosed. The arrangement comprises: a superconducting magnet comprising a plurality of magnet sections; a plurality of varistors, wherein each of the plurality of varistors is electrically connected in parallel across a respective one of the plurality of magnet sections; and a heater arrangement electrically connected to the plurality of varistors and configured to apply heat to each of the plurality of magnet sections in response to a change in a voltage across any one or more of the plurality of varistors. A method of protecting a superconducting magnet is also disclosed.

A quench protection arrangement for a superconducting magnet is disclosed. The arrangement comprises: a superconducting magnet comprising a plurality of magnet sections; a plurality of varistors, wherein each of the plurality of varistors is electrically connected in parallel across a respective one of the plurality of magnet sections; and a heater arrangement electrically connected to the plurality of varistors and configured to apply heat to each of the plurality of magnet sections in response to a change in a voltage across any one or more of the plurality of varistors. A method of protecting a superconducting magnet is also disclosed.

A superconducting magnet system and a cyclotron using the same. The superconducting magnet system includes a cryogenic device, a superconducting device and a protecting module. The cryogenic device includes a refrigerating machine and a cryogenic container assembly. The cryogenic container assembly includes a first container end, a connecting tube and a second container end. The first container end is communicated with the second container end through the connecting tube. The superconducting device includes a superconducting coil arranged in the first container end and immersed in a liquid or gaseous cooling medium. The protecting module is connected to the superconducting coil and is configured to protect the superconducting coil if the superconducting coil suffers a quench.

A superconducting magnet system and a cyclotron using the same. The superconducting magnet system includes a cryogenic device, a superconducting device and a protecting module. The cryogenic device includes a refrigerating machine and a cryogenic container assembly. The cryogenic container assembly includes a first container end, a connecting tube and a second container end. The first container end is communicated with the second container end through the connecting tube. The superconducting device includes a superconducting coil arranged in the first container end and immersed in a liquid or gaseous cooling medium. The protecting module is connected to the superconducting coil and is configured to protect the superconducting coil if the superconducting coil suffers a quench.

The disclosure belongs to the field of quench protection of a superconducting magnet system and specifically relates to a quench protection circuit for a superconducting magnet system based on a distributed heater network including M superconducting coils connected in series and a heater network formed by N heater modules, where M>N and N≤3. Different heater modules are connected in parallel with different superconducting coil subsets, and all superconducting coil subsets have spatial symmetry. Each heater module has m parallel branches, and each parallel branch has n heaters connected in parallel, where m≥1, n≥1, and when N=1, m>1. Each heater in the heater network is thermally coupled to one superconducting coil among the M superconducting coils, and each superconducting coil is thermally coupled to at least one heater in each heater module.

The disclosure belongs to the field of quench protection of a superconducting magnet system and specifically relates to a quench protection circuit for a superconducting magnet system based on a distributed heater network including M superconducting coils connected in series and a heater network formed by N heater modules, where M>N and N≤3. Different heater modules are connected in parallel with different superconducting coil subsets, and all superconducting coil subsets have spatial symmetry. Each heater module has m parallel branches, and each parallel branch has n heaters connected in parallel, where m≥1, n≥1, and when N=1, m>1. Each heater in the heater network is thermally coupled to one superconducting coil among the M superconducting coils, and each superconducting coil is thermally coupled to at least one heater in each heater module.

Disclosed is a superconducting magnet with improved thermal and electrical stabilities and a method for manufacturing the same. The superconducting magnet includes a bobbin disposed at a center of the superconducting magnet, a superconducting winding wound around an outer face of the bobbin, and an epoxy impregnated at an exterior of the superconducting winding, wherein the epoxy contains carbon nanotubes.

Disclosed is a superconducting magnet with improved thermal and electrical stabilities and a method for manufacturing the same. The superconducting magnet includes a bobbin disposed at a center of the superconducting magnet, a superconducting winding wound around an outer face of the bobbin, and an epoxy impregnated at an exterior of the superconducting winding, wherein the epoxy contains carbon nanotubes.