Evaluation of a NbTi cable-in-conduit prototype superconductor for the Wendelstein 7-X magnetic system

Journal Article · Mon Jul 01 04:00:00 EDT 1996 · IEEE Transactions on Magnetics

DOI:https://doi.org/10.1109/20.511364· OSTI ID:287662

Blau, B; Jakob, B; Pasztor, G; Vecsey, G ^[1]; Cerri, A ^[2]; Marti, H P ^[3]

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1. EPFL-CRPP, Villigen PSI (Switzerland). Fusion Technology Div.
2. Swissmetal Dornach (Switzerland)
3. Marti-Supratec AG, Wallisellen (Switzerland)

Swissmetal recently completed a contract to manufacture 200 m of NbTi cable-in-conduit prototype conductor to be used in the Wendelstein 7-X superconducting magnet system. The conductor consists of a 192 strand, four stage NbTi cable in an aluminium alloy jacket cooled by forced flow helium. It will operate at 16 kA, 3.8K and 6.2 T. To qualify this conductor electrical tests were performed on a 3.6 m long full-size specimen in the SULTAN test facility at CRPP. In preparation for these tests two conductor terminations and one electrical joint were manufactured in a relatively simple and, therefore, time and cost saving way. This paper presents the test results of critical current measurements performed on the conductor as well as of extracted strands in background fields of up to 8 T. The joint will be described and its resistance will be reported. In addition the results of pressure drop measurements at room temperature are presented.

• OSTI ID: 287662
• Report Number(s): CONF-950691--
• Journal Information: IEEE Transactions on Magnetics, Journal Name: IEEE Transactions on Magnetics Journal Issue: 4Pt1 Vol. 32; ISSN IEMGAQ; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DESIGN
ELECTRIC CONDUCTORS
EVALUATION
NIOBIUM ALLOYS
PERFORMANCE TESTING
SUPERCONDUCTING CABLES
SUPERCONDUCTING COMPOSITES
SUPERCONDUCTING MAGNETS
SUPERCONDUCTING WIRES
TEST FACILITIES
TITANIUM ALLOYS
WENDELSTEIN-7 STELLARATOR