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Title: Torus CLAS12-Superconducting Magnet Quench Analysis

The JLAB Torus magnet system consists of six superconducting trapezoidal racetrack-type coils assembled in a toroidal configuration. These coils are wound with SSC-36 Nb-Ti superconductor and have the peak magnetic field of 3.6 T. The first coil manufacturing based on the JLAB design began at FNAL. The large magnet system dimensions (8 m diameter and 14 MJ of stored energy) dictate the need for quench protection. Each coil is placed in an aluminum case mounted inside a cryostat and cooled by 4.6 K supercritical helium gas flowing through a copper tube attached to the coil ID. The large coil dimensions and small cryostat thickness drove the design to challenging technical solutions, suggesting that Lorentz forces due to transport currents and eddy currents during quench and various failure scenarios are analyzed. The paper covers the magnet system quench analysis using the OPERA3d Quench code.
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Publication Date:
OSTI Identifier:
Report Number(s):
JLAB-PHY-14-1922; DOE/OR/23177-3219
Journal ID: ISSN 1051-8223
DOE Contract Number:
Resource Type:
Journal Article
Resource Relation:
Journal Name: IEEE Transactions on Applied Superconductivity; Journal Volume: 24; Journal Issue: 3; Conference: 23rd International Conference on Magnet Technology, (MT-23) : Boston, Massachusetts, USA, July 14-19, 2013
Institute of Electrical and Electronics Engineers
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States