| 摘要 |
PURPOSE:To detect the temperature change of a superconducting coil or the change in structure of the coil and to make it possible to specify the generating section of the change by providing an optical fiber along the superconducting coil in parallel, and inputting pulse-type monochromatic light into the optical fiber. CONSTITUTION:Pulse-type monochromatic light emitted from a light source 1 passes through the light splitter 2. Thereafter, the light is inputted into an optical fiber 4 through a condenser lens 3. The optical fiber 4 is provided along a superconducting coil 5 in parallel. The transmitted light through the optical fiber 4 is absorbed in an extinction device 6. In the meantime, the scattering light generated in the optical fiber 4 becomes the reflected light and becomes the incident light for a scattering light detecting device 7. Spectroscopy is performed for every wavelength of the scattering light in a spectroscope 71 on the device 7. Optoelectronic transducing action is performed in a spectroscope 72. The received light signal is amplified in a preamplifier 73 and becomes the input signal for an operating device 74. The device 4 detects the temperature change of the superconducting coil 5 as the temperature change of the optical fiber 4 based on the intensity of the scattering light and the returning time of the optical fiber 4. The section where the temperature change occurs is obtained. The results are displayed on a display device 75. |
