A diagnosis method for properties of superconducting magnet using fast current discharge

The authors studied a diagnosis method to investigate the properties of superconducting magnets throughout their life. The magnet current, initially held constant, is damped with a short time constant. One can evaluate the properties of the magnet using the normal voltage, which may appear during th...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2001-03, Vol.11 (1), p.2595-2598
Main Authors: Takeuchi, K., Asano, K., Hayashi, H.
Format: Article
Language:English
Subjects:
Applied sciences
Bridge circuits
Computer simulation
Damping
Diagnosis
Electric potential
Electrical engineering. Electrical power engineering
Electromagnets
Exact sciences and technology
Magnetic flux
Magnetic properties
Mathematical models
Numerical simulation
Phase measurement
Resistors
Superconducting magnets
Telephony
Various equipment and components
Voltage
Voltage measurement
Waveforms
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The authors studied a diagnosis method to investigate the properties of superconducting magnets throughout their life. The magnet current, initially held constant, is damped with a short time constant. One can evaluate the properties of the magnet using the normal voltage, which may appear during the damping phase. A bridge circuit, which can adjust both amplitude and phase with over five orders of accuracy, was developed to measure unbalance voltages. Experiments were carried out using a small solenoidal NbTi magnet. By adjusting bridge parameters and numerically processing the voltage waveform, the authors measured the normal transition voltage with the S/N ratio of over 10/sup -4/ in the damping phase. The applicability of the diagnosis method was studied in both numerical simulations and experiments.
ISSN:1051-8223
1558-2515
DOI:10.1109/77.920399