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Effect of Axial Loading on Quench Performance in \hbox {Nb}_{3}\hbox {Sn} Magnets

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15 Author(s)
Ferracin, P. ; Lawrence Berkeley Nat. Lab., Berkeley, CA ; Ambrosio, G. ; Bordini, B. ; Caspi, S.
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A series of tests has been performed at Lawrence Berkeley National Laboratory (LBNL) and Fermi National Accelerator Laboratory (FNAL) with the goal of assessing the influence of coil axial pre-load on Nb3Sn magnet training. The tests involved two subscale magnets: SQ02, a quadrupole magnet fabricated as part of the US LHC Accelerator Research Program (LARP), and SD01, a dipole magnet developed in collaboration between CEA/Saclay and LBNL. Both magnets used similar flat racetrack coils from LBNL Subscale Magnet Program, and implemented an axial support system composed of stainless steel end-plates and aluminum rods. The system was designed to withstand full longitudinal electro-magnetic forces and provide controllable preloads. Quench performances, training, and quench locations have been recorded in various axial loading conditions. Test results are reported.

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Applied Superconductivity, IEEE Transactions on  (Volume:18 ,  Issue: 2 )