Design and fabrication of the R&D facility for Large Helical Device

[Proceedings] The 14th IEEE/NPSS Symposium Fusion Engineering Pub Date : 1991-09-30 DOI:10.1109/FUSION.1991.218892

K. Nakamoto, T. Yoshida, S. Mizumaki, K. Yamamoto, K. Nakayama, M. Shimada, Y. Wachi, M. Shibui, T. Uchida, H. Shinohara, H. Takano, S. Ioka, T. Mito, K. Takahata, N. Yanagi, J. Yamamoto, O. Motojima

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引用次数: 3

Abstract

Two different forced-cooled superconducting coils (TOKI-TF and TOKI-PF) were designed and fabricated to develop field coils for the Large Helical Device (LHD). The conductor used in the coils was the NbTi/Cu cable-in-conduit superconductor (CIC) encased in a SUS316L conduit and cooled with 4.5 K supercritical helium. The TOKI-TF is a helical coil with a field period m=4 wound in ten layers with the CIC conductor of 8 kA at 2.77 T. Its major and minor radii are 0.9 m and 0.25 m, respectively. One of the aims of the TOKI-TF was to demonstrate helical winding of the CIC conductor with good accuracy required for the LHD helical field coil. The TOKI-PF is a ring coil with a radius of 0.71 m, consisting of two double pancakes wound with the conductor of 25.6 kA at 2.76 T. The TOKI-PF was successfully energized at full current and provided useful data on the coil performance under a ramp rate of 2000 A/s and a long dump with a constant of 20 s.<>

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大型螺旋装置研发设备的设计与制造

设计并制造了两种不同的强制冷却超导线圈(TOKI-TF和TOKI-PF)，用于大螺旋装置(LHD)的场线圈开发。线圈中使用的导体是包裹在SUS316L导管中的NbTi/Cu电缆管内超导体(CIC)，并用4.5 K超临界氦冷却。TOKI-TF是一个磁场周期为m=4的螺旋线圈，绕成10层，CIC导体为8ka，温度为2.77 t，其主要半径为0.9 m，次要半径为0.25 m。TOKI-TF的目的之一是演示具有LHD螺旋场线圈所需的良好精度的CIC导体的螺旋绕组。TOKI-PF是一个半径为0.71 m的环形线圈，由两个双薄煎饼组成，导体在2.76 t时为25.6 kA。TOKI-PF在全电流下成功通电，并在2000 a /s的斜坡速率和20 s的长转储下提供了线圈性能的有用数据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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[Proceedings] The 14th IEEE/NPSS Symposium Fusion Engineering

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