Recent advances in hyper-velocity flyer launch experiments on PTS

Wang, Guilin; Guo, Shaoyun; Zhao-Wu, Shen; Zhang, Zhaohui; Liu, Cangli; Li, Jun; Zhang, Zheng-Wei; Yuesong, Jia; Zhao, Xiaoming; Hong, Chen; Shi, Feng; Ji, Ce; Minghe, Xia; Wei, Bing; Li, Yong; Yu, De‐Quan; Fan, Guo

doi:10.7498/aps.63.196201

Cited by 9 publications

References 15 publications

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From concept to reality — A review to the primary test stand and its preliminary application in high energy density physics

Deng

Xie

Shi

et al. 2016

Matter and Radiation at Extremes

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Pulsed power technology, whereas the electrical energy stored in a relative long period is released in much shorter timescale, is an efficient method to create high energy density physics (HEDP) conditions in laboratory. Around the beginning of this century, China Academy of Engineering Physics (CAEP) began to build some experimental facilities for HEDP investigations, among which the Primary Test Stand (PTS), a multi-module pulsed power facility with a nominal current of 10 MA and a current rising time ∼90 ns, is an important achievement on the roadmap of the electro-magnetically driven inertial confinement fusion (ICF) researches. PTS is the first pulsed power facility beyond 10 TW in China. Therefore, all the technologies have to be demonstrated, and all the engineering issues have to be overcome. In this article, the research outline, key technologies and the preliminary HEDP experiments are reviewed. Prospects on HEDP research on PTS and pulsed power development for the next step are also discussed.

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From concept to reality — A review to the primary test stand and its preliminary application in high energy density physics

Deng

Xie

Shi

et al. 2016

Matter and Radiation at Extremes

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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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