Computation of the Reversible Critical Current Degradation in Nb Sn Rutherford Cables for Particle Accelerator Magnets

• Published in: IEEE transactions on applied superconductivity Vol. 28; no. 4; pp. 1 - 6
• Main Authors: Vallone, Giorgio, Bordini, Bernardo, Ferracin, Paolo
• Format: Journal Article
• Language: English
• Published: IEEE 01.06.2018
• Subjects: Copper; critical current; Critical current density (superconductivity); Degradation; Loading; Nb<inline-formula xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <tex-math notation="LaTeX"> _{3}</tex-math> </inline-formula>Sn; Rutherford cables; scaling law; Strain; Stress; Superconducting cables; transversal pressure

Superconducting coils limit current is usually measured on unloaded short samples of strands extracted from the same cable used to wound the coil. However, the critical current density of Nb 3 Sn strands is strongly dependent on the applied strain. This dependence is well reproduced by the so-called...