Sensor for detecting a quench in a superconductor using an optic

Details Sensor for detecting a quench in a superconductor using an optic Sensor for detecting a quench in a superconductor using an optic

1990-03-05

1991-11-19

Stephan, Steven L.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Superconductor protective circuits

361141, 324 96, 505850, H02H 900

Patent

active

050670441

ABSTRACT:
A quench detector for a superconducting coil is provided which utilizes an optical coupling and a rotary encoder. The presence of a resistive voltage in the superconducting coil created by a quench will cause a rotatable readout coil to move. Movement of the readout coil will be detected by light passing through or reflected by an optical encoder, which will interrupt or transmit light passing from one or more light sources towards one or more light sensors. Preferred embodiments utilize optic fibers for the light sources and sensors, which are unaffected by the high magnetic fields or hostile environment of the superconductor coil.

REFERENCES:
patent: 4271443 (1981-06-01), Nother
patent: 4356448 (1982-10-01), Brogardh et al.
patent: 4371943 (1983-02-01), Woods
patent: 4777437 (1988-10-01), Tashiro
patent: 4978922 (1990-12-01), Mallick, Jr.
patent: 4996472 (1991-02-01), Mallick, Jr.

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