| 摘要 |
PURPOSE:To improve keeping of stability of a superconducting coil by visually photographing the state of the superconducting coil in a cooling medium from before generation of quenching to after generation thereof intermittently or successively and by predicting quenching at an early stage. CONSTITUTION:A visualizing photographing device which consists of a detector to detect an evaporation amount or a pressure of a cooling medium, a photographing command circuit 30 which gives a photographing command on receiving command from the detector, a camera which drives on receiving a command from the photographing command circuit 30, an image processing device 31 for processing information from the camera, etc., a photographing element container 20 for containing the camera and an insulated vacuum container 2 are formed of a tubular body of a non-magnetic metallic material, a resin tubular body or a transparent substance tubular body. Thereby, it is possible to predict quenching in an early stage and to maintain stability of a superconductive coil. |
