百万安培级 LTD 模块上锥形 MITL 和 PHC 系统的电流损耗实验

IF 2 3区 物理与天体物理 Q3 PHYSICS, FLUIDS & PLASMAS
Yaping Hong, Hao Wei, Jiachen Wang, Hanyu Wu, Liangping Wang, Chuangsi Cheng, Mo Li, Aici Qiu
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引用次数: 0

摘要

在 12 级线性变压器驱动器(LTD)上进行了一系列锥形磁绝缘传输线(MITL)和单后孔卷线器(PHC)的电流传输实验。线性变压器驱动器产生的电流上升时间约为 120 ns,峰值在 0.5 至 0.8 MA 之间,具体取决于终端连接负载。锥形 MITL 的设计间隙距离恒定为 8 毫米,相当于数十兆安培电流驱动器中多级锥形 MITL 中靠近 PHC 位置的 MITL 段。单个 PHC 也被设计为在接近数十兆安电流驱动器(如 Z 机器)的现场条件下运行。实验结果表明,在峰值电流达到 MITL 优点值(即 E/cB 在 0.1 至 1 之间变化)之前,沿着恒定间隙 MITL 几乎没有电流损失。研究了几何尺寸对单个 PHC 电流传输效率的影响。结果表明,当间隙距离大于 6 mm 时,单个 PHC 的电流传输效率相当高。而当间隙为 3 毫米时,PHC 的电流损耗增加到约 30%。我们还获得了单个 PHC 的动态阻抗。在脉冲过程中,随着等离子体的扩散,卷积分流阻抗迅速下降,这与已知的机制一致。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Current loss experiments of a conical MITL and PHC system on a megaampere-class LTD module
A series of current transport experiments of a conical magnetically insulated transmission line (MITL) and a single post-hole convolute (PHC) had been done on a 12-stage linear transformer driver (LTD). The LTD produced a current with a rise time of about 120 ns and a peak varying from 0.5 to 0.8 MA depending on the terminated connection loads. The conical MITL was designed with a constant gap distance of 8 mm, which was equivalent to the MITL segments that are close to the PHC locations in the multi-level conical MITL in tens of megaampere current drivers. A single PHC was also designed to operate at conditions close to those fielded on tens of MA current drivers such as the Z machine. The experiment results indicated that there was almost no current loss along the constant-gap MITL before the peak current even the MITL figure of merit, i.e., E/cB varied from 0.1 to 1. However, the time when current trails appeared gradually advanced. The effects of the geometric sizes on the current transport efficiency of a single PHC were studied. It was indicated that the current transport efficiency of the single PHC was considerable high while the gap distance is larger than 6 mm. Whereas the PHC current loss was increased to about 30% when the gap is 3 mm. The dynamic impedance of the single PHC was obtained. During the pulse, as the plasma diffused, the convolute shunt impedance rapidly decreased, which was consistent with the known mechanism.
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来源期刊
Physics of Plasmas
Physics of Plasmas 物理-物理:流体与等离子体
CiteScore
4.10
自引率
22.70%
发文量
653
审稿时长
2.5 months
期刊介绍: Physics of Plasmas (PoP), published by AIP Publishing in cooperation with the APS Division of Plasma Physics, is committed to the publication of original research in all areas of experimental and theoretical plasma physics. PoP publishes comprehensive and in-depth review manuscripts covering important areas of study and Special Topics highlighting new and cutting-edge developments in plasma physics. Every year a special issue publishes the invited and review papers from the most recent meeting of the APS Division of Plasma Physics. PoP covers a broad range of important research in this dynamic field, including: -Basic plasma phenomena, waves, instabilities -Nonlinear phenomena, turbulence, transport -Magnetically confined plasmas, heating, confinement -Inertially confined plasmas, high-energy density plasma science, warm dense matter -Ionospheric, solar-system, and astrophysical plasmas -Lasers, particle beams, accelerators, radiation generation -Radiation emission, absorption, and transport -Low-temperature plasmas, plasma applications, plasma sources, sheaths -Dusty plasmas
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