Vorrichtung und Verfahren zum schnellen Entladen einer supraleitenden Magnetspule

摘要

A device for the safe discharge of a superconducting magnet coil (4) which is located inside a cryostat (2) and superconductively short-circuited by a superconducting switch (7) comprises a transmitter (10) of electromagnetic energy located at a temperature level considerably above the cryogenic temperature of the superconducting magnet coil (4). There is arranged in the region of the superconducting switch (7) at the cryogenic temperature of the superconducting magnet coil (4), a receiver (20) for the emitted electromagnetic energy, which transmits the received energy directly or indirectly to a heating device (15) for the superconducting switch (7) or which activates an auxiliary energy source in the region of the superconducting switch (7), which in turn effects heating of the superconducting switch (7), so that it becomes normally conducting and causes discharge of the superconducting magnet coil (4) via resistors and/or diodes located at the cryogenic temperature. There is no electrically conducting connection between transmitter (10) and receiver (20).