Comparison and Analysis of Twist Pitch Length Test Methods for ITER Nb3Sn and NbTi Strands

• DOI: 10.48550/arxiv.1305.1688
• Publication Date: 2013-01-01
• Authors: Fang Liu; Feng Long; Chao Chen; Bo Liu; Yu Wu; Huajun Liu
• Keywords: Thermonuclear Fusion

A twisted multifilamentary structure is needed for Nb3Sn and NbTi strands to be used in the International Thermonuclear Experimental Reactor (ITER) magnets. As important parameters superconducting design production, twist pitch length direction of must meet requirements according ITER Procurement Arrangement (PA) this verified. The technical are 15mm+/-2mm right hand direction. strand can measured on straight sections strand, which recognized by repetition filament bundles or angle filaments. Several test methods results described compared paper. accuracy, uncertainty feasibility different analyzed recommended measurement proposed verification.