PROJECT TITLE :

Development of Nb-Rod-Method Cu–Nb Reinforced Nb3Sn Rutherford Cables for React-and-Wind Processed Wide-Bore High Magnetic Field Coils

ABSTRACT:

We tend to developed Cu–Nb strengthened Nb3Sn Rutherford cables for wide-bore high magnetic field coils that were in a position to be made by React-and-Wind technique. The Cu–Nb/$textNb_3$Sn strands were bolstered by internal Cu-twenty vol%Nb composites fabricated by the Nb-rod-method and were manufactured through the bronze-process. The Rutherford cables composed of sixteen un-reacted Cu–Nb/$textNb_3$Sn strands of zero.eight-mm diameter were heat-treated at 670 °C for ninety six hours. After that, repeated bending strains (pre-bending strains) were applied to the flatwise direction of the reacted $textNb_3$Sn Rutherford cables at area temperature. Vital current $(I_mathrmc ) $ values of Cu–Nb/$textNb_3$Sn strands extracted from the Rutherford cables were compared to those of the single strands that had undergone the same processing as the cables. $I_mathrmc $ values underneath the applied tensile stress of the Rutherford cable were increased by the pre-bending treatment as like the only strand. The performances of Cu–Nb/$textNb_3$Sn Rutherford cables were improved by utilization of the pre-bending process.