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Volume 18 (1983)
- Issue 6 Pages 287-
- Issue 5 Pages 244-
- Issue 4 Pages 165-
- Issue 3 Pages 109-
- Issue 2 Pages 49-
- Issue 1 Pages 1-
Volume 18, Issue 3
Displaying 1-5 of 5 articles from this issue
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Shunji YAMADA, Takakazu SHINTOMI1983 Volume 18 Issue 3 Pages 109-118
Published: June 28, 1983
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSSuperconductive dipole magnets for big accelerators are subjected to enormous electro-magnetic force, when they are operated with high field such as 10 Tesla. They should be constructed by means of superconductive cables, which have high Young's modulus, to obtain good performance. To develop such cables we measured the Young's moduli of cables for practical use of accelerator magnets. They are monolithic and compacted strand cables. We measured also Young's moduli of monolithic copper and brass cables for comparison. The obtained data showed the Young's moduli of 35 and 15GPa for the monolithic and compacted strand cables, respectively.View full abstractDownload PDF (2792K) -
Y. KAMIOKA1983 Volume 18 Issue 3 Pages 119-125
Published: June 28, 1983
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSThe steady state heat flux and the related temperature profiles in pressurized superfluid helium II are calculated using the universal Gorter-Mellink equation proposed by Soloski et al. The results are in good agreement with the data obtained in this study within an experimental error.View full abstractDownload PDF (714K) -
Hideo TSURUGA, Kazuo ENDOH1983 Volume 18 Issue 3 Pages 126-131
Published: June 28, 1983
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSThe effects of pressure on heat transfer from a horizontal copper surface immersed in pressurized He I are experimentaly investigated. Heat transfer surface is 0.02m in diameter. The pressure is varied from 0.047MPa to 1.1MPa and helium temperature is varied from 3.0K to 5.0K. The data obtained are divided into two heat transfer regions, the subcooled heat transfer region and supercritical heat transfer region. Heat transfer in subcooled liquid helium are correlated with a modified Rohsenow equation based on saturation temperature difference. Peak nucleate boiling heat fluxes obtained in subcooled helium increase with subcooling and show two different slope in large subcooling. Heat transfer in liquid helium pressurized above critical pressure show a good agreement with a equation predicted from heat transfer in ordinary liquid.View full abstractDownload PDF (696K) -
Kazuyoshi KOGA, Fumio SUMIYOSHI, Fujio IRIE1983 Volume 18 Issue 3 Pages 132-139
Published: June 28, 1983
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSA theoretical study is made on the ac loss in multifilamentary superconducting wires subjected to magnetic-field pulses with large amplitudes. The loss is calculated taking account of the electromagnetic properties of the wires at high magnetic-fields, e.g., the effects of the magnetoresistance of Cu matrices and the degradation of the critical current of NbTi filaments. It is shown for a slow sweep-rate that these effects make the saturation condition shift to the side of smaller amplitude of the applied field, so that the saturation condition approaches to a usual operation condition of pulse magnets. General features of the ac loss are shown on the contour maps, including the dependences of the wire parameters.View full abstractDownload PDF (1091K) -
1983 Volume 18 Issue 3 Pages 161
Published: 1983
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSDownload PDF (76K)
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