Electrical circuit for protecting a superconducting magnet durin

Details Electrical circuit for protecting a superconducting magnet durin Electrical circuit for protecting a superconducting magnet durin

1995-08-11

1997-05-06

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Superconductor protective circuits

361 93, 361115, H02H 700

Patent

active

056277091

ABSTRACT:
A superconductive-magnet electrical circuit for protecting a superconductive magnet from damage during a quench in the superconductive magnet coil assemblage. A first circuit portion detects the quench. A pilot superconductive switch has its superconductive wire portion superconductively coupled in series with the coil assemblage and has its resistive heater portion, which is activated by the first circuit portion, located near the superconductive wire portion. A second circuit portion (such as a resistive heater or an energy dump resistor) quench protects the coil assemblage and is triggered by the superconductive wire portion switching from the superconductive to the resistive mode.

REFERENCES:
patent: 3925707 (1975-12-01), Bhate et al.
patent: 4528532 (1985-07-01), Keim
patent: 4586017 (1986-04-01), Laskaris et al.
patent: 4764837 (1988-08-01), Jones
patent: 4956740 (1990-09-01), Williams
patent: 4977039 (1990-12-01), Onishi et al.
patent: 5410288 (1995-04-01), Dorri et al.
Concurrently filed U.S. Patent Application RD-24556, by Lembit Salasoo et al., entitled "A Method for Making an Electrical Coil".
Concurrently filed U.S. Patent Application RD-24491, by Lembit Salasoo et al., entitled "Superconducting Switch".

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