Superconducting magnet

A superconducting magnet, comprising:

• magnet coils including at least one group of outer coils and at least one group of inner coils;
• a container including an accommodating space that is enclosed by an inner wall of the container, a cooling chamber and an outer chamber being disposed within the accommodating space;
• a support structure on which the at least one group of outer coils or the at least one group of inner coils are disposed;
• a shell structure disposed around the at least one group of outer coils or the at least one group of inner coils;
• at least one first chamber being formed based on the support structure and the shell structure, and configured to house the at least one group of the inner coils and be disposed within the cooling chamber;
• at least one second chamber being formed based on the support structure and the shell structure, and configured to house the at least one group of the outer coils and be disposed within the cooling chamber,
• wherein the at least one first chamber and the least one second chamber are configured to be filled with a cooling medium and are in fluid communication with each other,
• the cooling medium being configured to cool the magnet coils to a superconducting state,
• the outer chamber being outside and separate from the cooling chamber;
• and
• a control valve being configured to control a fluid communication between the outer chamber and the cooling chamber.