Stability and quench propagation velocities measurements on the 'racetrack' mock-up of ATLAS toroid coil

• Published in: IEEE transactions on applied superconductivity Vol. 10; no. 1; pp. 677 - 680
• Main Authors: Juster, F.-P., Deregel, J., Hervieu, B., Rey, J.-M.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 2000; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Aluminum; Applied sciences; CERN; Coiling; Coils; Conductors; Conductors (devices); Cooling; Cyclic accelerators and storage rings; Electrical engineering. Electrical power engineering; Electromagnets; Exact sciences and technology; Experimental methods and instrumentation for elementary-particle and nuclear physics; Generation of magnetic fields; magnets; Hadrons; Inductance; Instruments, apparatus, components and techniques common to several branches of physics and astronomy; Magnetic components, instruments and techniques; Magnetic field measurement; Nuclear physics; Physics; Propagation velocity; Pulse measurements; Superconducting device characterization, design, and modeling; Superconductivity; Thermal stability; Toroidal magnetic fields; Toroids; Various equipment and components; Velocity measurement; Coils; Stability; Propagation velocity; Superconducting magnets; Toroidal field; Magnets; Superconducting transition
• ISSN: 1051-8223; 1558-2515
• DOI: 10.1109/77.828324

A mock-up of ATLAS toroid coil, which is one of the 3 detectors presently under construction for the future Large Hadron Collider at CERN, had been tested at Saclay. Various experiments have been led to check the validity of important technical options for the magnet. This paper focuses on thermal stability and quench propagation velocities measurements. For a 70/spl times/7 mm/sup 2/ aluminum-stabilized conductor carrying a 20 kA current, a 4-5 joule minimum quench energy and a 20 m/s longitudinal quench propagation velocity were found. We also studied the dependence of those features according to the operating current in the 5-20 kA range.