Analysis of 3-D Locations of All Strands in CIC Conductor
Analysis of 3-D Locations of All Strands in CIC Conductor
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DOI：
10.1109/tasc.2011.2177509
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发表时间：
2012-06
影响因子：
1.8
通讯作者：
D. Miyagi;S. Teshima;S. Nakazawa;D. Arai;M. Tsuda;T. Hamajima;T. Yagai;N. Koizumi;Y. Nunoya;K. Takahata;T. Obana
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文献类型：
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作者：
D. Miyagi;S. Teshima;S. Nakazawa;D. Arai;M. Tsuda;T. Hamajima;T. Yagai;N. Koizumi;Y. Nunoya;K. Takahata;T. Obana
为了研究长衰减时间常数、电流不平衡和临界电流退化等超导特性，我们需要详细了解电缆导体（CICC）中所有链的位置，因此我们开发了一种新的估计方法来获得所有链的位置。要估计所有链的位置是非常困难的，因为真正的中金细胞中的所有链都被挤压到导管中，并且不是有规律地排列而是移位的。为了估计由于压缩引起的这些线的位移，我们引入了线之间的机械势能，从而我们搜索了导体中应该实现的最小能量位置。为了计算这一过程，我们从原始位置扰动所有链，并使用遗传算法继续这些过程，直到势能最小。这种分析方法非常有用，可以模拟所有链的位置，并允许我们研究ccic中的所有电磁现象。
In order to investigate superconducting properties such as long decay time constants, current imbalances and critical current degradations, we need detailed information about all strand locations in the cable-in-conduit conductor (CICC), and hence we develop a new estimation method to obtain all strand locations. It is very difficult to estimate all strand positions because all strands in the real CICC are squeezed into the conduit and are not regularly arranged but displaced. In order to estimate these strand displacements due to the compression, we introduce mechanical potential energy among strands, and hence we search the minimum energy locations which should be realized in the conductor. In order to calculate this process, we perturb all strands from the original locations and continue these processes by using a genetic algorithm until the potential energy is minimized. This analytical method is very useful to simulate all strand positions and allows us to investigate all the electromagnetic phenomena in the CICCs.