300 kV Tesla Transformer Based Pulse Forming Line Generator

Kumar, Rajesh; Novac, B.M.; Sarkar, Partha; Smith, I.R.; Greenwood, C.

doi:10.1109/ipmc.2008.4743627

Cited by 3 publications

(1 citation statement)

References 4 publications

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“…Intense electron beam accelerator (IEBA) based on pulse forming line (PFL) and high voltage pulse transformer (HVPT) is usually used to generate high voltage pulse with duration of hundreds of nanosecond (Friedman et al, 1988;Katsuki et al, 2001;Kumar et al, 2008;Liu et al, 2009), and which is widely used in a great variety of applications such as in lasers (Sethian et al, 2000;Apruzese et al, 2006), high power microwave generators (HPMG) (Clark et al, 1988;He et al, 2011), and X-ray generation (Coogan et al, 1990;Tarasenko et al, 2005;Kuai et al, 2009) and so on. So in the past years, PFL and HVPT are widely researched, and which focus on improving the pulse duration, amplitude of the output voltage, and quality of the output voltage waveform.…”

Section: Introductionmentioning

confidence: 99%

Operating characteristics of intense electron beam accelerator at different load conditions

et al. 2012

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As the development of the pulsed power technology, high voltage pulse transformer (HVPT) is usually used instead of Marx generator as a charging device for the pulse forming line (PFL) of intense electron-beam accelerator (IEBA), and which make the IEBA compact. However, during the operation of the IEBA, the HVPT may be destroyed for the failure of electrical insulation and the over-voltage. So in this paper, the output voltage characteristics of IEBA, characteristics of the voltage at the output terminal of HVPT at four kinds of load conditions are analyzed, including load matching, load short, load open, and surface flashover in the vacuum chamber. It is found that load short, load open, and surface flashover in vacuum chamber will affect the voltage at the output terminal of HVPT, and an oscillation wave could be formed, which affect the electrical insulation of HVPT and decrease the lifetime of HVPT. Meanwhile, the waveform of the load voltage is also modified, especially at the conditions of load open and surface flashover in vacuum chamber. When the load is open, the amplitude of the output main pulse of IEBA is twice the charging voltage of BPFL. However, the amplitude of the output pulse of IEBA is modified by the voltage at the output terminal of HVPT, and the resistance of main switch channel has a great effect on the amplitude of the load voltage. When surface flashover occurs in the vacuum chamber, the pulse duration of the output voltage will be decreased. So, during the operation of IEBA, load short, load open and surface flashover in vacuum chamber should be avoided.

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Section: Introductionmentioning

confidence: 99%

Operating characteristics of intense electron beam accelerator at different load conditions

et al. 2012

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Application of high speed frame camera on the intense electron beam accelerator: An overview

2013

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High speed framing camera (HSFC) could be used to capture the image of the electron beams generated by the intense electron-beam accelerator (IEBA), and it is useful to visualize the evolution of discharging and plasma generation phenomenon. So an overview of the application of HSFC on the IEBA is presented. First, we introduce the synchronization problem of HSFC and IEBA, and a synchronization trigger system which could provide a trigger signal with rise time of 17 ns and amplitude of about 5 V is presented. Second, an imaging system based on IEBA, HSFC, and the synchronization trigger system is developed, and it can be used to image the developmental process of plasma in the output vacuum chamber of IEBA and to measure the electrical parameter of IEBA and electrical trigger signal in real time. Furthermore, the imaging system is used to investigate the developmental process of the electron beam of the A-K gap in vacuum under 180 nanosecond quasi-square pulses. It is obtained that the short A-K gap is closed prematurely under long pulse operation with plasma expansion velocity of about 6.25 cm/μs and the light emission in the A-K gap region has the characteristics of "re-ignition" with light duration time about 3800 ns. At last, the discharging process of surface flashover channel of poly-methyl methacrylate (PMMA) insulator with gap spacing of 170 mm in vacuum under nanosecond quasi-square pulses is studied by the imaging system, and the change of luminosity is analyzed during the surface flashover process.

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Design of a New Type of Solid-State Coaxial Blumlein Pulse Forming Line

2018

IEEE Trans. Plasma Sci.

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300 kV Tesla Transformer Based Pulse Forming Line Generator

Cited by 3 publications

References 4 publications

Operating characteristics of intense electron beam accelerator at different load conditions

Operating characteristics of intense electron beam accelerator at different load conditions

Application of high speed frame camera on the intense electron beam accelerator: An overview

Design of a New Type of Solid-State Coaxial Blumlein Pulse Forming Line

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