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Measurement-
I Measurement - critical current measurement Ic system
I Measurement - critical current measurement Ic system
Ic measurement at 77 K, with or without field of 0.5 T, and Ic at 20 T and 20 K.
HTS tape Ic angular dependence
HTS tape Ic angular dependence
Angle dependence of critical current of 7.5% Zr-added (Gd,Y)BCO – Standard production superconducting tapes at 30 K in magnetic fields of 1, 2, 3, 4, 5, 6 and 9 T
Rotating Ic measurement
Rotating Ic measurement
Ic measurement at each angle relatively between background field direction and sample surface
II Instrumentation for quench detection
II Instrumentation for quench detection
Signals: voltage, temperature sensors, strain gauge, and magnetic field sensor.
Alternative: fiber optical sensors, hall probe array
III Quench protection
III Quench protection
Design novel power supplies with quench protection hardware in the loop, in collaboration with Woodruff Scientific.
Tackle slow ramping issue for NI HTS coils, design novel ramp-pattern.
Patented technology in tuning turn-to-turn resistivity of HTS coils and magnet systems.
Instrumented HTS coils
Instrumented HTS coils
Equivalent electrical circuits with Cu disks
Equivalent electrical circuits with Cu disks
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