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Content Provider | IEEE Xplore Digital Library |
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Author | Zanino, R. Bagnasco, M. Bellina, F. Bonicelli, T. della Corte, A. Di Zenobio, A. Fietz, W.H. Formisano, A. Heller, R. Ilyin, Y. Marchese, V. Martone, R. Muzzi, L. Nijhuis, A. Polak, M. Ribani, P.L. Salpietro, E. Richard, L.S. Turtu', S. Verdini, L. Zahn, G.R. |
Copyright Year | 2002 |
Abstract | The Bus Bar III (BBIII), fabricated within the Toroidal Field Model Coil Task of the International Thermonuclear Experimental Reactor (ITER), was tested at the Forschungszentrum Karlsruhe, Germany, in the spring of 2004. The BBIII consists of an approximately 7 m long NbTi dual-channel conductor with a thick square stainless steel jacket, cooled by forced flow supercritical He. It was energized with currents up to 80 kA and operates in its self magnetic field (up to /spl sim/0.8 T). The BBIII was instrumented with Hall-probe heads and arrays, voltage rings and longitudinal voltage taps for electro-magnetic measurements, in order to get experimental data to be used for the validation of a recently developed hybrid thermal-hydraulic electro-magnetic code (THELMA), as well as for the assessment of the possibility of performing a reliable reconstruction of the current distribution in the conductor cross section under controlled conditions. In the tests, current ramps at different rates were applied to characterize the conductor time constants, while two different resistive heaters (one upstream of the BBIII inlet, another one directly on the BBIII jacket) were separately operated in order to approach current sharing in the conductor and to observe the related current re-distribution. In this paper, a summary of the collected experimental results is presented, with particular emphasis on those aspects more relevant for the forthcoming THELMA analysis. |
Sponsorship | Council on Superconductivity Appl. Superconductivity Conference Inc MIT |
Starting Page | 1407 |
Ending Page | 1410 |
Page Count | 4 |
File Size | 302496 |
File Format | |
ISSN | 10518223 |
Volume Number | 15 |
Issue Number | 2 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2005-06-01 |
Publisher Place | U.S.A. |
Access Restriction | One Nation One Subscription (ONOS) |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Current distribution Current measurement Niobium compounds Titanium compounds Conductors Magnetic field measurement Testing Coils Inductors Springs superconducting magnets Fusion reactors ITER NbTi |
Content Type | Text |
Resource Type | Article |
Subject | Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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