一种新型低电感磁绝缘传输线的冷腔特性

刘燕; 刘腊群; 周良骥; 蒋吉昊; 刘大刚; 王辉辉; 王启昂

doi:10.11884/HPLPB202234.210494

一种新型低电感磁绝缘传输线的冷腔特性

doi: 10.11884/HPLPB202234.210494

1.
电子科技大学电子科学与工程学院，成都 610054
2.
中国工程物理研究院流体物理研究所，四川绵阳 621900

基金项目: 国家自然科学基金项目（12075051，11775045，11905026）

详细信息

作者简介:
刘　燕，15803808946@163.com

通讯作者:
刘腊群，liulq@uestc.edu.cn

中图分类号: TM89
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- 文章访问数: 612
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- 被引次数: 0
出版历程
- 收稿日期: 2021-11-17
- 修回日期: 2022-03-17
- 录用日期: 2022-03-18
- 网络出版日期: 2022-03-24
- 刊出日期: 2022-06-15

Cold cavity characteristics of a new type of low-inductance magnetically insulated transmission line

1.
School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
2.
Institute of Fluid Physics, CAEP, Mianyang 621900, China

摘要

摘要: 研究了一种新型低电感花瓣形磁绝缘传输线的冷腔特性。该传输线构型的横向剖面的真空部分由12个类似花瓣形状的周期组成，而每个周期又由平行板和同轴圆弧两种基本传输线构型组成。该构型的整体轮廓有效增加了电极面积，使得传输线的电感大大降低，从而实现使用单层磁绝缘传输线即可获得较低的阻抗，规避了多层汇流结构带来的复杂的PHC结构和磁零位区损失问题。首先，分别计算出两种基本构型单元的电磁场分布、电感、电容和阻抗；而后，再整体计算分析出花瓣形磁绝缘传输线的电磁特性参数；同时，还通过数值模拟来分析该传输线的冷腔特性，获得了该传输线的阻抗值及电磁场分布，并将数值模拟结果与理论计算值进行了对比分析，结果验证了理论计算方法的正确性。
- 花瓣形 /
- 低电感 /
- 磁绝缘传输线 /
- 冷腔特性 /
- 数值模拟
Abstract: The vacuum part of the transverse section of this configuration is composed of 12 petal-like periods, and each period is composed of two basic transmission line configurations: parallel plates and coaxial arcs. The overall outline of this configuration effectively increases the electrode area, which greatly reduces the inductance of the transmission line, so that a lower impedance can be obtained by using a single-layer magnetically insulated transmission line,which avoids the complex PHC structure and the loss of the magnetic null region caused by the multi-layer bus structure. The electromagnetic field distribution, inductance, capacitance, and impedance of the two basic configuration units are calculated separately, and then the electromagnetic characteristic parameters of the petal-shaped magnetic insulated transmission line are calculated and analyzed as a whole. At the same time, the cold cavity characteristics of the transmission line are analyzed through numerical simulation, the impedance value and electromagnetic field distribution of the transmission line are obtained, and the numerical simulation results are compared with the theoretical calculation values for verification and analysis.
- petal shape /
- low inductance /
- magnetically insulated transmission line /
- cold cavity characteristics /
- numerical simulation

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图 1 新型低电感MITL横截面构型

Figure 1. New low-inductance MITL cross-sectional configuration

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图 2 单个花瓣周期结构图

Figure 2. Periodic structure diagram of a single petal

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图 3 半个花瓣周期三维模型剖面图

Figure 3. Half-petal cycle 3D model section view

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图 4 花瓣形不同观测点处电场分布的模拟和理论值

Figure 4. Simulation and theoretical value of electric field distribution at different observation points of petal-shaped

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图 5 花瓣形不同观测点处磁场分布的模拟和理论值

Figure 5. Simulation and theoretical values of magnetic field distribution at different observation points of petal-shaped

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图 6 花瓣形电场等位图

Figure 6. Isometric map of petal-shaped electric field

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图 7 花瓣形磁场等位图

Figure 7. Isometric map of petal-shaped magnetic field

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图 8 花瓣形阴极到阳极的电场空间变化图

Figure 8. Spatial variation of electric field from petal-shaped cathode to anode

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图 9 花瓣形阴极到阳极的磁场空间变化图

Figure 9. Spatial variation of the magnetic field from petal-shaped cathode to the anode

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表 1 理论计算与Chipic模拟的点的电场分布对比

Table 1. Comparison of electric field distribution between theoretical calculation and Chipic simulation point

	point	theoretical calculation/(MV·m⁻¹)	chipic simulation/(MV·m⁻¹)	relative error/%
small circle segment	P1	497.2	499.0	0.3
small circle segment	P2	497.2	500.4	0.6
parallel plate segment	P3	500.0	500.3	0.1
	P4	500.0	500.4	0.1
	P5	500.0	500.3	0.1
great circle segment	P6	499.5	500.9	0.3
great circle segment	P7	499.5	500.9	0.1

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表 2 理论计算与Chipic模拟的点的磁场分布对比

Table 2. Comparison of magnetic field distribution between theoretical calculation and Chipic simulation point

		theoretical calculation/T	chipic simulation/T	relative error/%
small circle segment	P1	1.648	1.664	1.0
small circle segment	P2	1.648	1.669	1.3
parallel plate segment	P3	1.653	1.669	1.0
	P4	1.653	1.669	1.0
	P5	1.653	1.670	1.0
great circle segment	P6	1.652	1.671	1.2
great circle segment	P7	1.652	1.668	1.0

下载: 导出CSV

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