论文信息 - Effect of Axial Loading on Quench Performance in Nb3Sn Magnets

Effect of Axial Loading on Quench Performance in Nb3Sn Magnets

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 Nb3Sn 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 Nb3Sn 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 electromagnetic forces and provide controllable preloads. Quench performances, training, and quench locations have been recorded in various axial loading conditions. Test results are reported.

[1] S. Caspi,et al. Assembly and Tests of SQ02, a Nb $_{3}$Sn Racetrack Quadrupole Magnet for LARP , 2007, IEEE Transactions on Applied Superconductivity.

[2] S. A. Gourlay,et al. Magnet R&D for the US LHC Accelerator Research Program (LARP) , 2006 .

[3] R. R. Hafalia,et al. An approach for faster high field magnet technology development , 2003 .

[4] R. Bossert. Development of TQC01, a 90 mm Nb3 Sn Model Quadrupole for LHC Upgrade Based on SS Collar , 2009 .

[5] S. Caspi. Design and Test of a Nb3Sn Subscale Dipole Magnet for Training Studies , 2008 .

[6] S. Caspi. Design and Analysis of TQS01, a 90 mm Nb3Sn Model Quadrupole for LHC Luminosity Upgrade Based on a Key and Bladder Assembly , 2008 .