Superconducting apparatus

A superconducting apparatus, comprising:

• a magnetic field generating portion including a superconducting coil that generates a magnetic flux;
• an extremely low temperature generating portion maintaining the superconducting coil at an extremely low temperature and maintaining the superconducting coil in a superconducting state;
• a container defining a heat insulation chamber that accommodates the superconducting coil;
• a first terminal electrically connected to the superconducting coil and supplying an electric power to the superconducting coil;
• a second terminal connected to an external electric power source and supplying the electric power to the first terminal in a case where the magnetic field generating portion is driven;
• and
• a heat penetration preventing element holding one of the first and second terminals and thermally separating the first and second terminals from each other in a case where a driving of the magnetic field generating portion is stopped, the heat penetration preventing element restraining a heat penetration from the second terminal to the first terminal,
• wherein the container includes a first holding portion holding the first terminal and the heat penetration preventing element includes a second holding portion holding the second terminal and a distance adjusting portion adjusting a distance between the first holding portion and the second holding portion, the distance adjusting portion separating the first holding portion and the second holding portion from each other to mechanically separate the second terminal held by the second holding portion from the first terminal held by the first holding portion, the first terminal and the second terminal being thermally separated from each other.