Detection of the normal zone with cowound sensors in cable-in conduit conductors
Tokamaks in the future will use superconducting cable-in-conduit- conductors (CICC) in all poloidal field (PF) and toroidal field (TF) magnets. Conventional quench detection, the measurement of small resistive normal zone voltages ({lt}1 V) in the magnets will be complicated by the presence of large inductive voltages ({gt}4 kV). In the quench detection design for TPX, we have considered several different locations for internal co-wound voltage sensors in the cable cross-section as the primary mechanism to cancel this inductive noise. The Noise Rejection Experiment (NRE) at LLNL has been designed to evaluate which internal locations will produce the best inductive- noise cancellation, and provide us with experimental data for comparison with previously developed theory. The details of the experiments and resulting data are presented and analyzed.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC02-76CH03073; W-7405-ENG-48
- OSTI ID:
- 286175
- Report Number(s):
- UCRL-JC-124582; CONF-960850-1; ON: DE96014090; TRN: 96:023331
- Resource Relation:
- Conference: Applied superconductivity conference, Pittsburgh, PA (United States), 25-30 Aug 1996; Other Information: PBD: 30 Jul 1996
- Country of Publication:
- United States
- Language:
- English
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