Title :
Critical current measurements of the cable for the superconducting dipole prototypes for the Large Hadron Collider
Author :
Baccaglioni, G. ; Fabbricatore, P. ; Garre, R. ; Musenich, R. ; Parodi, R. ; Rossi, L. ; Volpini, G.
Author_Institution :
Istituto Nazionale di Fisica Nucl., Rome, Italy
fDate :
7/1/1994 12:00:00 AM
Abstract :
The specifications of the NbTi/Cu cable for the superconducting dipole of the LHC are very demanding: Jc (non Cu) in excess of 1000 A/mm2 at 8 tesla and 4.2 K, with filament diameter of 5-6 microns. One type of cable is composed of 28 strands with a required critical current at 8 T and 4.2 K of 13000 A and the other one has 40 strands with Ic at 6 T and 4.2 K of 15500 A. We describe the results we obtained in an extensive campaign of Ic measurements carried out both on cables and on strands, these last both in virgin state and extracted from cable. The reliability of extrapolation from strands Ic to cable performance is discussed as well as the degradation due to a cross-over in the cable thin edge
Keywords :
copper; critical currents; niobium alloys; proton accelerators; storage rings; superconducting magnets; synchrotrons; titanium alloys; 13000 A; 15500 A; 4.2 K; 6 T; 8 T; Large Hadron Collider; NbTi-Cu; cable performance; critical current measurements; superconducting dipole prototypes; Conductors; Copper; Critical current; Current measurement; Degradation; Large Hadron Collider; Power cables; Prototypes; Superconducting cables; Superconducting epitaxial layers;
Journal_Title :
Magnetics, IEEE Transactions on
