Influence of strand surface condition on interstrand contact resistance and coupling loss in NbTi-wound Rutherford cables

✍ Scribed by M.D Sumption; E.W Collings; R.M Scanlan; A Nijhuis; H.H.J ten Kate; S.W Kim; M Wake; T Shintomi

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 277 KB
• Volume: 39
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/s0011-2275(99)00021-1

✦ Synopsis

Presented in this work are the results of directly measured and AC-loss-derived interstrand contact resistance (ICR) measurements performed magnetically or resistively on bare-Cu and coated-strand pairs, calorimetrically on 11-strand Rutherford cables wound with strands that had been coated with various metallic and insulating layers, and calorimetrically and magnetically on 28-strand Rutherford cables (LHC-type) wound with bare-Cu-, Ni-, and stabrite-plated strands. Comparisons are made of the effects of various conditions of heat treatment, HT (time and temperature), and pressure (applied during HT and then either maintained or re-applied during measurement). The resulting ICRs are compared and interpreted in terms of the oxide layer on the strand coating and its response to curing conditions.