Title :
Monitoring of a water-cooled coil of a hybrid magnet by means of precise measurements of field and resistance
Author :
Nakagawa, Yukihiro ; Kido, G. ; Miura, Shun ; Noto, K. ; Hoshi, A. ; Kudo, M. ; Sai, K. ; Ishikawa, Y.
Author_Institution :
Inst. for Mater. Res., Tohoku Univ., Sendai, Japan
fDate :
3/1/1988 12:00:00 AM
Abstract :
It is found that the deterioration of a water-cooled resistive coil was usually preceded by a decrease in electrical resistance accompanied by a decrease in a coil constant (i.e. the ratio of the magnetic field to current). Methods for precise resistance and field measurements are described for use in forecasting coil burnt-out. Plots of coil constant versus current for several magnets verify the technique used.
Keywords :
coils; electric resistance measurement; electromagnets; magnetic field measurement; monitoring; superconducting magnets; coil burnt-out; coil constant; deterioration; electrical resistance; field measurements; hybrid magnet; resistance measurement; superconducting magnet; water-cooled resistive coil; Coils; Cooling; Electrical resistance measurement; Hysteresis; Magnetic field measurement; Monitoring; Probes;
Journal_Title :
Magnetics, IEEE Transactions on
