Review of high-power pulsed systems at the Institute of High Current Electronics

Kim, A.A.; Kovalchuk, B. M.; Kokshenev, V. A.; Shishlov, A. V.; Ratakhin, N. A.; Oreshkin, V. I.; Rostov, V. V.; Koshelev, V. I.; Лосев, В. Ф.

doi:10.1016/j.mre.2016.08.001

Cited by 28 publications

(11 citation statements)

References 23 publications

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“…ue to their excellent features such as high-voltage, highcurrent, low inductance, and high di/dt rate, spark gap switches are widely used in various practical applications such as particle accelerators, weapon effect simulation, controlled thermonuclear fusion, high-power lasers, and high-power microwaves [1]. Recent developments in the design of repetitive pulsed power sources require spark gap switches capable of driving high-current with a low time-delay jitter (< 5 ns) and operated at a high repetition rate (~100 Hz) for a very large number of shots [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Optimal Operation Frequency With Lowest Time-Delay Jitter for an Electrically Triggered Field-Distortion Spark Gap

Song

Zhang

et al. 2019

IEEE Trans. Plasma Sci.

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The present work was stimulated by the assumption that, for a gas-filled spark gap closing switch operating at a high repetition frequency, there is an optimal frequency range in which the time-delay jitter is reaching a minimum value. The experiments to test this assumption use an electrically triggered, fielddistortion spark gap filled with SF6/N2 gas mixture. The results show that indeed, the time-delay jitter decreases for a range of frequencies for which the filling gas can substantially restore the inter-electrode insulation, before increasing at a higher operation frequency. The experimental results demonstrate the correctness of the above presented assumption: the time-delay jitter of the field-distortion spark gap has its minimum when the unit operates in the repetition frequency range between 20 Hz and 30 Hz. Since the recovery time depends on gas species and gap distance, the optimum operation frequency range should also vary depending on the spark gap distance and the filling gas properties. Index Terms-optimal repetition frequency, low time-delay jitter, field distortion, spark gap switch Ivor R. Smith received the B.Sc. and Ph.D. degrees from the University of Bristol, Bristol, U.K., after completing a student apprenticeship at the Witton Works of the General Electric Company, and the D.Sc. degree from the University of Birmingham, Birmingham, U.K., for his continued research contribution. He was a Lecturer in electrical engineering with the University of Birmingham and was subsequently promoted to Lecturer and Reader. He then moved to Loughborough University, Leicestershire, U.K., as a Professor of electrical power engineering and served as the Head of Department, Dean of Engineering, and Pro-Vice Chancellor. He has been active in research in many aspects of the production, conditioning, and utilization of large pulses of electrical energy, and his work has brought in very substantial funding from a wide range of sponsors. Dr. Smith is a Chartered Engineer, a Fellow of the Institution of Engineering and Technology and the Royal Academy of Engineering.

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Section: Introductionmentioning

confidence: 99%

Analysis of the Optimal Operation Frequency With Lowest Time-Delay Jitter for an Electrically Triggered Field-Distortion Spark Gap

Song

Zhang

et al. 2019

IEEE Trans. Plasma Sci.

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“…This long track record provides a good example of the robustness of an LTD facility. HCEI continues to develop LTD technology, including the development of air-insulated (rather than oil insulated) LTD cavities [38]. Air insulted LTDs are not as powerful or compact as oil insulated LTDs, but they are much easier to service and maintain.…”

Section: Worldmentioning

confidence: 99%

“…We will first establish a basic, general picture of a pulsed-power-driven HEDP experiment. We will then use this picture to understand a relatively new pulsed-power technology for HEDP called Linear Transformer Drivers (LTDs) [23]- [38]. To provide a basis for comparison, we will also briefly describe the more traditional Marx-generator/pulse-forming-line approach to driving HEDP experiments.…”

Section: Introductionmentioning

confidence: 99%

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A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications

McBride

Stygar

Cuneo

et al. 2018

IEEE Trans. Plasma Sci.

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“…N recent years, important civilian and military applications were all based on pulsed power sources similar to the one described in the paper [1]- [3]. The closing switch represents a key component of such units and its performance directly affects the overall technical specification of the power source [4].…”

Section: Introductionmentioning

confidence: 99%

A Compact and Repetitively Triggered, Field-Distortion Low-Jitter Spark-Gap Switch

Song

Zhang

et al. 2019

IEEE Trans. Plasma Sci.

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This paper describes the development of a small field-distortion spark gap switch. Comprehensive experimental studies made with the switch revealed its self-breakdown characteristics, voltage operating range, time delay and jitter, repetition frequency and finally the electrode erosion processes and duration of its service life time. A series of design improvements were required to be implemented in the switch design. For example, to reduce the structural inductance of the switch and to improve its working characteristics, the main electrode was designed as a circular track structure. Similarly, to increase the operation stability and reduce the self-breakdown probability, the trigger electrode was designed as a disk-like structure. Moreover, to balance the gas pressure in the discharge region and increase the stability during closure, a circular hole was added at the center of the trigger electrode. The compact switch has a small size of only 150 mm × 42 mm, a weight of 1.5 kg and can successfully be operated at a voltage over 110 kV, at a repetition rate between 1 Hz to 50 Hz and having a jitter of less than 4 ns. It was experimentally demonstrated that during normal operation conditions, the switch life time exceeds 100,000 shots.

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Review of high-power pulsed systems at the Institute of High Current Electronics

Cited by 28 publications

References 23 publications

Analysis of the Optimal Operation Frequency With Lowest Time-Delay Jitter for an Electrically Triggered Field-Distortion Spark Gap

Analysis of the Optimal Operation Frequency With Lowest Time-Delay Jitter for an Electrically Triggered Field-Distortion Spark Gap

A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications

A Compact and Repetitively Triggered, Field-Distortion Low-Jitter Spark-Gap Switch

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