Superconducting solenoid apparatus

Claim 1

A SUPERCONDUCTING MAGNET CHARACTERIZED BY BURNOUT PROOF PROTECTION FOR SUPERCONDUCTIVE WINDINGS AND FREEDOM FROM RELATIVELY LOW CRITICAL CURRENT CAPACITY SECTION, SUCH AS JOINT, AND COMPRISING, IN COMBINATION: A FERROMAGNETIC CORE WITH A MAGNET GAP, MEANS FOR CREATING A MAGNETIC FIELD IN THE CORE, A SUPERCONDUCTING COIL ELECTROMAGNETICALLY LINKED TO THE FERROMAGENTIC CORE, THE COIL COMPRISING CLOSED RINGS OF SUPERCONDUCTING MATERIAL IN AN ESSENTIALLY CLOSED SPACE, A CRYOGENIC FLUID HAVING A TEMPERATURE BELOW THE CRITICAL TEMPERATURE OF THE SUPERCONDUCTING MATERIAL, MEANS FOR ADMITTING SAID CRYOGENIC FLUID TO SAID SPACE FOR LOWERING THE TEMPERATURE OF THE COIL BELOW THE CRITICAL TEMPERATURE OF THE SUPERCONDUCTING MATERIAL, A PORTION OF SAID FERROMAGNETIC CORE BEING MOVABLE RELATIVE TO THE REST OF THE CORE BETWEEN AT LEAST A FIRST POSITION WHEREIN THE CORE HAD SAID MAGNET GAP AND A SECOND POSITION WHEREIN SAID GAP IS CLOSED, WITH SAID CORE PORTION PROVIDING A CONSISTENTLY LARGE CROSS-SECTION AREA FOR BRIDGING THE GAP IN SAID SECOND POSITION, AND MEANS CONNECTED TO SAID CORE PORTION AND CONSTRUCTED AND ARRANGED TO MOVE SAID CORE PORTION BETWEEN SAID FIRST AND SECOND POSITIONS, AND CLOSING THE GAP OF THE FERROMAGNETIC CORE.