Research on Quench Detection Method Using Radio Frequency Wave Technology

The purpose of this article is to explore a new quench detection method–radio frequency (RF) wave method, and evaluate its actual use value. The quench condition of the Bi2223 superconducting coil is simultaneously detected by the terminal voltage and the RF quench detection method. This method shows promise as a future means of quench detection and already allows us to check the state of the coil before powering the magnet, but that further research and development needs be done to make the method more stable. Comparing the experimental results with the simulation, it is found that the RF method can reflect the change of the conductor impedance. A lot of useful information is obtained in the experiment to further improve this method.