Abstract

Parts 1 and 2 of this Paper proposed the dynamic stabilization method which was designed to achieve high current density in large-scale magnets. To demonstrate its feasibility, a model coil of 8 T, 25 MJ energy was designed at an overall current density of 100 A mm −2. The conductor was 1 × 50 mm Cu-Nb 3Sn-Cu strip and was graded according to the field strength to meet the dynamic stability requirement. The quench analysis showed a maximum temperature rise of 420 K. The protection by an external resistor was enough to suppress the temperature rise down to 100 K. These results indicate that the proposed stabilization method is effective in attaining high current density in large-scale magnets and also suitable for emerging high field materials.

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