Experiments and simulations of 4 MV coax-to-triplate multi-channel water self-breaking switch

Minghe, 夏明鹤 Xia; Bin, 姚斌 Yao; Zhen, 傅贞 Fu; Zhi, 王治 Wang; Yong, 李勇 Li; Yujuan, 王玉娟 Wang; Ce, 计策 Ji; Weiping, 谢卫平 Xie; Hongtao, 李洪涛 Li; Shuping, 丰树平 Feng

doi:10.3788/hplpb20102207.1692

Cited by 2 publications

(1 citation statement)

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“…The Primary Test Stand (PTS) [1][2][3] is the first TW class pulsed power device in China. It was designed to generate 8-10 MA current with a rise time of ∼110 ns (0∼100%) into the load by Institute of Fluid Physics, CAEP.…”

Section: Introductionmentioning

confidence: 99%

Current pulse shaping of the load current on PTS

Minghe

et al. 2016

AIP Advances

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The typical rise time of PTS machine is ∼110 ns with about 10 MA peak current under short pulse mode when all 24 modules discharge simultaneously. By distributing the trigger times of 12 laser beams logically and adjusting the statues of the pulse output switches, longer rise-time pulse can be obtained on the PTS facility. Based on the required pulse shape, whole circuit simulations will be used to calculate the trigger times of each laser triggering gas switch and the status of the pulse output switches. The rise time of the current is determined by the time difference between the first and last trigged laser triggering gas switches. In order to trigger the laser triggering gas switch, sufficient laser power is needed to be sent into the gap of the gas switches. The gas pressure and voltage difference on the two electrodes of the gas switches also affect the triggering of the gas switches, and the voltage added on the gas switch is determined by its transition time. Traditionally the trigger time difference should be less than the transition time of the two neighboring modules. A new simulation model of PTS shows one can break this transition time limits. Series of current pulse shaping experiments have been investigated on the PTS (Primary Test Stand). As results, more than 5 MA peak current were successfully achieved on the load with a rise time of 600 ns. This study and experiments of the pulse shaping on PTS demonstrate the adaptable ability of the PTS for offering different waveform of mega ampere current pulse for different research purpose.

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Section: Introductionmentioning

confidence: 99%

Current pulse shaping of the load current on PTS

Minghe

et al. 2016

AIP Advances

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Design and experiment studies of a 2.6-MV diverter system

Zeng

Jiang

et al. 2017

Review of Scientific Instruments

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Malfunctions of the Marx pre-fire or in the event that the main switch does not close were analyzed. Principles of the diverter system for protection of those events were introduced in detail. A 2.6 MV diverter system, consisting of an oil trigger switch and a Marx-coupled trigger generator, was developed. Based on "JianGuang-I" facility, a diverter-system test stand was established. And experiments with 2.3-MV working voltages were carried out to study the performance of this diverter system. Experiment results show that the time delay of this diverter system (from the beginning of the Marx erection to the time that the diverter-switch closes) is about 320 ns and its jitter (standard deviation) is about 8.9 ns. This diverter system has been tested more than 180 shots, and no problem has been encountered yet.

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Experiments and simulations of 4 MV coax-to-triplate multi-channel water self-breaking switch

Cited by 2 publications

References 0 publications

Current pulse shaping of the load current on PTS

Current pulse shaping of the load current on PTS

Design and experiment studies of a 2.6-MV diverter system

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