LTD单路验证装置电流测量

卫兵; 王杰; 李远; 李逢; 陈林; 周良骥; 郭帆; 袁建强

doi:10.11884/HPLPB202234.210519

LTD单路验证装置电流测量

doi: 10.11884/HPLPB202234.210519

中国工程物理研究院流体物理研究所，脉冲功率科学与技术重点实验室，四川绵阳 621999

基金项目: 国家自然科学基金项目(51907181,51977201)；中国工程物理研究院创新基金创新项目（CX2019005）

详细信息

作者简介:
卫　兵，73wb@163.com

中图分类号: TM835.4
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- 被引次数: 0
出版历程
- 收稿日期: 2021-11-25
- 修回日期: 2022-04-19
- 录用日期: 2022-04-22
- 网络出版日期: 2022-04-27
- 刊出日期: 2022-05-12

Current measurement for LTD single branch verification device

Key Laboratory of Pulsed Power, Institute of Fluid Physics, CAEP, P.O. Box 919-108, Mianyang 621999, China

摘要

摘要: 为测量LTD单路验证装置的过渡段与出口电流，设计和标定了B-dot电流探头。采用径向传输线对电流探头进行了线下标定，并开展相应验证实验证实了标定的有效性。实验表明：探头安装深度和角度误差导致的探头灵敏度偏差约为1%；当阴阳极间距大于探头孔直径时，B-dot标定结果基本不受阴阳极间距的影响；对于本装置涉及的直径较大的同轴线，用径向线模拟标定结果是有效的。从LTD单路验证装置的实验结果可知，4个过渡段至出口的阳极电流有轻微的损失，而阴极电流逐步减小。
- 脉冲电流 /
- 测量 /
- 标定 /
- 真空磁绝缘传输线
Abstract: To measure the transition section and outlet current of LTD single branch verification device, a B-dot current probe is designed and calibrated. The radial transmission line is used to calibrate the current probe offline, and the corresponding verification experiments are carried out to verify the effectiveness of the calibration. The experimental results show that the sensitivity deviation of the probe is about 1% due to the errors of probe installation depth and angle. When the distance between the cathode and the anode is greater than the diameter of the probe hole, the B-dot calibration result is independent of the distance. For the coaxial transmission line with large diameter involved in the device, the simulation and calibration results of radial transmission line are effective. According to the experimental results of the LTD single channel verification device, the difference of anode current from the four transition sections to the outlet is very small, while the cathode current decreases gradually.
- current pulse /
- measurement /
- calibration /
- magnetically insulated transmission line

HTML全文

图 1 电流探头布局

Figure 1. Position of LTD current monitors

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图 2 探头结构

Figure 2. Structure of monitor

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图 3 B-dot频响测试连线示意图

Figure 3. Diagram of B-dot frequency response test

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图 4 电流探头的幅频响应特性

Figure 4. Amplitude-frequency response of B-dot

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图 5 转换纵坐标后的响应特性

Figure 5. Response of B-dot after y-axis is transformed

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图 6 标定径向线结构示意图

Figure 6. Structure diagram of radial line for calibration

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图 7 B-dot标定波形

Figure 7. Calibration waveform of B-dot

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图 8 B-dot灵敏度与深度的关系

Figure 8. Relation diagram between B-dot sensitivity and depth

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图 9 改变阴阳极间隙的径向线结构图

Figure 9. Structure diagram of radial line for changing the gap between the anode and the cathode

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图 10 阴阳极间距与B-dot灵敏度的关系

Figure 10. Relation diagram between anode-cathode spacing and B-dot sensitivity

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图 11 I_a1位置4个电流探头的测量结果

Figure 11. Current waveforms of 4 probes at I_a1

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图 12 I₁位置的阴阳极电流波形

Figure 12. Current waveform of anode and cathode at I₁

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图 13 I₅位置的阴阳极电流波形

Figure 13. Current waveform of anode and cathode at I₅

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