INTERNAL-STRESS INFLUENCE ON HIGH-CURRENT DENSITY SUPERCONDUCTING MAGNET PERFORMANCE

Dry-wound superconducting solenoid offers a good manufacturability of large bore magnet but occasionally suffers from premature quenches tri ggered by small heat generated within the magnet. Principal source of heat is thought to be conductor motion induced frictional heating and/ or filler material fracture released energy in windings. This paper de scribes major specification, stress analysis and training performance and their relation of series of magnets that were constructed and test ed to establish a stabilizing methods of a large bore dry-wound superc onducting solenoid. The results suggested that conductor motion took p lace even though radial stress in the magnet was still compressive and a conductor was expected in its original position.