NDLI: Electromagnetic Analysis of the Voltage-Temperature Characteristics of the ITER TF Conductor Samples

Content Provider	IEEE Xplore Digital Library
Author	Breschi, M. Ribani, P.L. Bellina, F.
Copyright Year	2002
Abstract	The measurement of the current sharing temperature of a Cable in Conduit Conductor is a complex task. The voltage traces measured on the conduit (jacket) of these conductors during tests, give V-I characteristics that significantly differ from the typical transition from the superconducting to the resistive state measured on single strands. In these measurements, after an initial ramping of the transport current up to the test value, the temperature is increased by steps until the resistive transition occurs. However, even in the first phase of the current ramping, when the cable is still fully or almost superconductive, early voltages are measured along the jacket at different angular positions around the cable. In particular, this was observed in the ITER TF conductors recently tested in the SULTAN facility at Villigen PSI, Switzerland. These samples showed significant ramps of voltages taken in the proximity of the joints and terminations. The present paper gives a possible qualitative and quantitative explanation for this mechanism. Numerical simulations are also shown which reproduce the scattering of the voltages measured around the jacket at a given location, showing the effect of the voltage taps position along the jacket in a six sub-cable model.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	1512
Ending Page	1515
Page Count	4
File Size	559385
File Format	PDF
ISSN	10518223
Volume Number	19
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electromagnetic analysis Voltage Conductors Superconducting cables Current measurement Cable shielding Testing Electromagnetic measurements Position measurement Temperature superconducting cable Cable in conduit conductors current sharing temperature
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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DC Performance Results Versus Assessment of ITER Main Busbar NbTi Conductors

Sensitivity Analysis of $T_{cs}$ Measurement on ITER TF Conductors

The Results of Russian ITER TF Conductor Sample Test in SULTAN

Results of a New Generation of ITER TF Conductor Samples in SULTAN

Conductor Manufacturing of the ITER TF Full-Size Performance Samples

Development and Sultan Test Result of ITER Conductor Samples of Korea

Manufacturing of the ITER TF Conductors in China

Russia's Contribution to the ITER TF Magnets

Fabrication Process Qualification of TF Insert Coil Using Real ITER TF Conductor

Electromagnetic Analysis of the Voltage-Temperature Characteristics of the ITER TF Conductor Samples

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Sensitivity Analysis of $T_{cs}$ Measurement on ITER TF Conductors

The Results of Russian ITER TF Conductor Sample Test in SULTAN

Results of a New Generation of ITER TF Conductor Samples in SULTAN

Conductor Manufacturing of the ITER TF Full-Size Performance Samples

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