Patent ID: 11948736
Assignee: GE PRECISION HEALTHCARE LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 0:
1. A superconducting magnet system having two-stage quenching, the superconducting magnet system comprising:
a primary coil assembly having a coil section configured to be superconducting when conducting current below a first critical current; and
an EMI shielding coil assembly having one or more coil sections electrically coupled to a variable resistor, the one or more coil sections being configured to be superconducting when conducting current below a second critical current, and the variable resistor being configured to be superconducting when conducting current below a third critical current and to be non-superconducting when conducting current at or above the third critical current, wherein the third critical current is less than both the first critical current and the second critical current;
wherein the EMI shielding coil assembly is configured such that generating a magnetic flux within the EMI shielding coil assembly causes the current conducted through the variable resistor to exceed the third critical current, quenching the variable resistor and generating heat; and
wherein the EMI shielding coil assembly is disposed such that the heat from the variable resistor quenches the primary coil assembly.