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Design and test of a hollow Superconducting cable based on keystoned NbTi composite wires

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7 Author(s)
Khodzhibagiyan, H.G. ; Joint Inst. for Nucl. Res., Dubna, Russia ; Fischer, E. ; Kovalenko, A.D. ; Moritz, G.
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The data from the investigation of hollow superconducting cable based on keystoned NbTi wires are presented. The cable sample, consisting of 15 wires wound around a cooper-nickel tube 5 mm in diameter and cooled with two-phase helium flow has operated inside the magnet aperture at a current of 13.4 kA and the current ramp rate of 26.8 kA/s. The external magnetic field value was about 2 T and the field ramp rate of 4 T/s. The pulse repetition rate of 1 Hz was provided. The first 650 m of the new wire was manufactured based on the improved technology. A piece of hollow cable 40 m in length was fabricated. The outer cable diameter with electric insulation is 7.34 mm. A test winding for a 1.4 m superferric nucleotron-type window frame model dipole for SIS100 as part of the FAIR-project of GSI was fabricated and tested. The obtained results are discussed. The new approach to a 'cable-in-conduit' conductor cable design, based on the use of keystoned wires, is described.

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Applied Superconductivity, IEEE Transactions on  (Volume:15 ,  Issue: 2 )