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This document outlines the design specifications and performance characteristics of BSCCO and YBCO Rutherford cables, focusing on critical parameters such as width, average thickness, critical current, and current density under various magnetic field strengths. Measurements include configurations with 22 to 24 strands for BSCCO and 8 to 15 tapes for YBCO, with significant emphasis on insulation requirements and modeling techniques for Roebel cables. An evaluation of inter-layer design aspects and the impact of copper wedges on overall performance is also included.
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First 2D cos-θ designs EuCARD2 WP10 Task 3 March 17th, 2014
BSCCO Rutherford (cf. WP10.2 statusFeb 2nd, 2014) • Width = 9.5 mm • Averagethickness = 1.45 mm • t-edge = 1.391 mm / T-edge = 1.517 mm • 22 strands • Criticalcurrent= 6700 A -> • Je = 505 A/mm2 • Trans. pitch = 65 mm • + 100 µm insulation
BSCCO 7blocks b9 • 5 T -> Je = 554 A/mm²
BSCCO 6blocks b11 • 5 T -> Je = 550 A/mm2 B (T)
BSCCO 5blocks b9 • 5 T -> Je = 553 A/mm²
BSCCO Rutherford proposal • Width = 10 mm • Averagethickness = 1.45 mm • t-edge = 1.391 mm / T-edge = 1.517 mm • 24strands • Criticalcurrent= 7050 A -> • Je = 505 A/mm2 • Trans. pitch = ? (> 65 mm) • + 100 µm insulation
BSCCO(10 mm)5blocks b7 • 5 T -> Je = 487 A/mm²
BSCCO(10 mm)6blocks b9 • 5 T -> Je = 515 A/mm²
YBCO Roebel(cf. WP10.2 statusFeb 2nd, 2014) • Width = 10 mm • Thickness = 0.88 mm • 15 tapes • Criticalcurrent= 3000 A • Je = 340 A/mm2 • + 100 µm insulation (toobig?) How to model RoebelcablewithRoxie?
‘Roebel’ 7blocks b11 • 5 T -> Je = 561 A/mm² (Joverall= 450 A/mm²) B (T)
‘Roebel’ 7blocks b9 • 5 T -> Je = 597 A/mm² (Joverall= 477 A/mm²)
‘Roebel’ 4blocks b7 • 5 T -> Je= 520 A/mm² (Joverall = 416 A/mm²)
YBCO Roebel(cf. WP10.2 statusFeb 2nd, 2014) • Width = 10 mm • Thickness = 0.44 mm • 8 tapes • Criticalcurrent= 1700 A • Je = 386 A/mm2 • + 50 µm insulation (toosmall?)
‘Roebel’ 6blocks b9 • 5 T -> Je = 557 A/mm² (Joverall= 450 A/mm²) I likethis one!
‘Roebel’ 5blocks b7 • 5 T -> Je = 533 A/mm² (Joverall= 430 A/mm²)
Questions • Mid-plane gap? • Flat on the mid-plane (alpha = 0)? • Maximum inclinaison of a cable? • Insulationthickness? • Inter-layer block alignment? • Inter-layer gap? • Symmetricalcopperwedges? • Number of blocks? • No iron: Je ~ 530 - 560 A/mm² • Iron pole + 0.25 T max (without Fresca2) -> -25 A/mm² Comments
100 mm 2x12 mm
‘Roebel’ 4x2blocks b5 • 5 T -> Je = 697 A/mm² (Joverall= 564 A/mm²)