| LTD单路验证装置电流测量 |
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| 引用本文： | 卫兵,王杰,李远,李逢,陈林,周良骥,郭帆,袁建强.LTD单路验证装置电流测量[J].强激光与粒子束,2022,34(7):075007-1-075007-6. |
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| 作者姓名： | 卫兵 王杰 李远 李逢 陈林 周良骥 郭帆 袁建强 |
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| 作者单位： | 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 |
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| 基金项目： | 国家自然科学基金项目(51907181,51977201)； |
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| 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。
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| 关 键 词： | 脉冲电流 测量 标定 真空磁绝缘传输线 |
| 收稿时间： | 2021-11-25 |
Current measurement for LTD single branch verification device |
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| Affiliation: | Key Laboratory of Pulsed Power, Institute of Fluid Physics, CAEP, P.O. Box 919-108, Mianyang 621999, China |
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| 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. |
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