| 摘要 |
An inspection apparatus capable of suppressing degradation of oxide superconductors comprises a transformer including a flux-change detection coil and a flux transmission coil and formed of a first superconductor, an SQUID element magnetically connected to the flux transmission coil and formed of a second superconductor, a first indirect cooling section containing the flux transmission coil and the SQUID element, a second indirect cooling section including a first through hole, the flux-change detection coil winding around the first through hole, a vessel including a second through hole formed therein and located inside the first through hole, the vessel making, a sealed space, a space in which the transformer and the SQUID element are located, and a cooling section thermally connected to the first and second indirect cooling sections to cool the transformer and the SQUID element to a value not higher than the critical temperatures of the first and second superconductors.
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