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Volume 24 (1989)
- Issue 6 Pages 311-
- Issue 5 Pages 244-
- Issue 4 Pages 189-
- Issue 3 Pages 129-
- Issue 2 Pages 65-
- Issue 1 Pages 1-
Volume 24, Issue 3
Displaying 1-4 of 4 articles from this issue
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Kenzo YAMAMOTO1989 Volume 24 Issue 3 Pages 129
Published: June 25, 1989
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSDownload PDF (192K) -
Susumu SHIMAMOTO1989 Volume 24 Issue 3 Pages 134-142
Published: June 25, 1989
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSThe large hardware international collaboration for fusion power has been carried out and successfully completed. The collaboration has been named as Large Coil Task (LCT) for superconducting toroidal coil under auspices of the International Energy Agency. This paper describes the overview of the task and the experimental results. A superconducting coil system is indispensable for fusion power generation in order to confine and control plasma. However, it is technically impossible to construct such large coil system with one step. The evaluation on conductor types and materials, and the scaling-up are requested to construct a practical reactor. In order to have efficient developments, an international collaboration was undertaken in 1977. The participants are the United States, EURATOM (represented by West Germany), Switzerland and Japan, of which US acted as the operating agent. The major part of the project has been devoted to six coils (5.5m height, 40ton/coil) fabrication and facility (helium refrigerator etc.) construction. As the final stage of the project, the experiment have been continuously performed from January 1986 until September 1987 in the United States. All the six coils, which brought from the participants, satisfied the original target, 8T field generation. In the extended condition, finally 9T was simultaneously obtained with all the coils.View full abstractDownload PDF (2304K) -
Teruo MATSUSHITA1989 Volume 24 Issue 3 Pages 143-151
Published: June 25, 1989
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSThe critical current density is an important factor as well as the critical temperature and the critical magnetic field in power application of superconductors. A magnitude of the critical current density is determined by flux pinning interactions. In this report the flux pinning phenomenon is briefly explained and it is discussed what is to be done for the purpose of increasing the critical current density. Measuring methods of the critical current density are also reviewed.View full abstractDownload PDF (1680K) -
Fumio SUMIYOSHI1989 Volume 24 Issue 3 Pages 152-160
Published: June 25, 1989
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSA quantitative estimation of the electromagnetic property of superconducting conductors under the various conditions is important for applications of superconductivity. However, there are many cases in which we cannot estimate their properties in detail, because the conductor has a complicate structure being composed of both superconductors characterized by a hysteretic magnetic property and normal metal conductors as a stabilizers. In the present paper, we review the well-known basic electromagnetic properties of a multifilamentary superconducting wire as a strand for the conductor, which have been made clear through many researchers. Fundamental views on the property of the conductor, which is composed of the wires, are also described.View full abstractDownload PDF (1945K)
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