Design and fabrication of the CPQ (Conductor Performance Qualification) coil
- Lawrence Livermore National Lab., CA (USA)
The design and fabrication process of a 15-T, 4000-A, Nb{sub 3}Sn test coil are described. In the Conductor Performance Qualification (CPQ) coil, it is intended to demonstrate the reliable performance of cable-in-conduit conductors (CICC) produced in large quantities from internal-tin process, multifilamentary, Nb{sub 3}Sn composites. In addition, techniques appropriate for the insulate-wind-react-impregnate method of coil construction using CICCs, such as joints and insulations are developed and demonstrated. The coil is designed to operate at a maximum field of 15 T as an insert to the High-Field Test Facility Solenoid at LLNL. It consists of four grades of CICCs, each made of the same number, but a different size, of composite wires. Operating current density over the first-grade conductor winding is 40 A{center dot}mm{sup -2} at 15 T. Also presented is a novel ripple heating scheme to inject heat at specific levels appropriate for a close simulation of ac and nuclear heat loads in a fusion reactor. Up to 100 W of heating power can be simulated within the coil winding, allowing the effects of such heating on the coil performance to be investigated. 5 refs., 7 figs., 2 tabs.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- DOE/DP
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5327441
- Report Number(s):
- UCRL-100533; CONF-890850-4; ON: DE90002821
- Resource Relation:
- Conference: 11. international conference on magnet technology, Tsukuba (Japan), 28 Aug - 1 Sep 1989
- Country of Publication:
- United States
- Language:
- English
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