Flexibility of LHD Configuration with Multi-Layer Helical Coils
Flexibility of LHD Configuration with Multi-Layer Helical Coils
复制标题
具有多层螺旋线圈的铲运机配置的灵活性
DOI：
10.1088/0029-5515/36/9/i04
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
M. Okamoto
中科院分区：
文献类型：
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作者：
K. Ichiguchi;O. Motojima;K. Yamazaki;N. Nakajima;M. Okamoto
大型螺旋装置(LHD)是一种具有两个螺旋线圈的氦加速器装置，每个螺旋线圈具有三个电流层的结构。通过改变各层中线圈电流的组合，可以独立控制各层中的电流，从而可以改变螺旋线圈的有效小半径，从而增加了配置的灵活性。数值研究了几种不同层组合的等离子体性质。在真空结构中，有效线圈半径较大的层的组合具有较大的最外表面。在这种情况下，与具有所有三层的配置相比，旋转变换减小，磁山减小。由于小的转动变换，大的沙夫洛夫位移增强了磁势垒和磁剪切力以稳定Mercier模，但它降低了平衡β极限。在有效线圈半径较小的层组合的情况下，Mercier模不稳定，因为磁山被增强。此外，还研究了自举电流的影响
The Large Helical Device (LHD) is a heliotron device with two helical coils, each of which has a structure of three current layers. It is designed so that the current in each layer can be controlled independently by changing the combination of the coil current in the layers, it is possible to vary the effective minor radius of the helical coils, which enlarges the flexibility of the configuration. The properties of the plasmas for several combinations of the layers are investigated numerically. In the vacuum configuration, it is found that the combination of layers corresponding to a large effective coil radius has a large outermost surface. In this case, the rotational transform decreases and the magnetic hill is reduced compared with the configuration with all three layers. The large Shafranov shift, which is due to the small rotational transform, enhances the magnetic well and the magnetic shear to stabilize the Mercier mode; however, it degrades the equilibrium beta limit. In the case of the combination of layers for a small effective coil radius, the Mercier mode is destabilized, because the magnetic hill is enhanced. The effect on the bootstrap current is also studied
影响因子：
3.3
作者：
A. Gibson;T. Sekiguchi;K. Lackner;S. Bodner;R. Hancox
通讯作者：
A. Gibson;T. Sekiguchi;K. Lackner;S. Bodner;R. Hancox
O.Motojima：《超导大型螺旋装置的工程设计研究》核聚变。
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