Circuit for effective quench heating in superconducting magnets
View Patent ↗An assembly comprising a number of superconductive coils, at least one quench heater arranged to heat the superconductive coil(s) in the event that at least part of at least one of the coils enters a quenched state; means for transferring energy from the coil(s) to the heater(s) in the event that at least part of at least one of the coils enters a quenched state; wherein the means for transferring energy from the coil(s) to the heater(s) includes a series capacitance, through which the energy transferred must pass.
1. An assembly comprising:
a number of superconductive coils,
at least one quench heater arranged to heat the superconductive coil(s) in the event that at least part of at least one of the coils enters a quenched state;
means for transferring energy from the coil(s) to the heater(s) in the event that at least part of at least one of the coils enters a quenched state;
wherein the means for transferring energy from the coil(s) to the heater(s) includes a series capacitance, through which the energy transferred must pass.
2. An assembly according to claim 1 wherein a plurality of superconductive coils are connected in series, and the heater(s) is/are connected across a subset of the coils.
3. An assembly according to claim 2 , wherein the heater(s) is/are connected across one half of the coils.
4. An assembly according to claim 1 , wherein the heater(s) is/are connected to the superconductive coils through a bridge rectifier, and wherein the series capacitance is provided between intermediate nodes of the bridge rectifier in place of a DC connection.