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Publication Citation: Test Results of the First US ITER TF Conductor in SULTAN

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Author(s): Nicolai N. Martovetsky; Daniel R. Hatfield; John R. Miller; Chen-yu Gung; Joel S. Schultz; Najib Cheggour; Loren F. Goodrich; Pierluigi Bruzzone; Boris Stepanov; Rainer Wesche; Bernd Seeber;
Title: Test Results of the First US ITER TF Conductor in SULTAN
Published: June 22, 2009
Abstract: The US Domestic Agency is one of six parties supplying TF cable-in-conduit conductors (CICCs) for ITER. Previous tests have shown that measured performance of the TF CICCs can be much lower than expected from the strand properties at the projected uniaxial strain and that the cabling pattern may also be an important factor. Worst of all, voltage signals well below the expected critical surface could not be reliably interpreted or canceled, making test results very suspect. The TFUS1 sample was prepared to achieve multiple goals: 1) to ensure uniform current distribution and to eliminate parasitic voltage signals by improving joints, 2) to explore the potential benefits of a different cabling pattern for better support of strain-sensitive strands, and 3) to explore the source of voltage development in the cable through the use of innovative penetrating diagnostics. Test results of the first US-made samples are presented and discussed.
Citation: IEEE Transactions on Applied Superconductivity
Volume: 19
Issue: 3
Pages: pp. 1478 - 1482
Keywords: Superconducting device testing;Superconducting cables;Superconducting materials measurements
Research Areas: Advanced Materials, Energy, Measurements
PDF version: PDF Document Click here to retrieve PDF version of paper (458KB)