Quench protection for persistant superconducting magnets for mag

Details Quench protection for persistant superconducting magnets for mag Quench protection for persistant superconducting magnets for mag

1998-12-30

2000-11-14

Leja, Ronald W.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Superconductor protective circuits

361141, H02H 700

Patent

active

06147844&

ABSTRACT:
A quench protection circuit for the series connected but spatially separated magnet coils of a superconducting magnet utilizes a parallel circuit of multiple heaters and reverse connected diodes shunting portions of the series connected magnets coils with the heaters physically positioned in thermal contact with other coils in the series circuit to thermally transfer a heat quenching action in any coil to all coils, along with a shunting current through the diodes to shunt peak currents upon coil quenching to avoid undesired spot temperature rise and enable controlled quenching of the entire magnet upon quenching of any coil.

REFERENCES:
patent: 4689707 (1987-08-01), Schwall
patent: 4956740 (1990-09-01), Williams
patent: 5731939 (1998-03-01), Gross et al.

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