An electron-beam accelerator based on spiral water PFL

Liu, J.L.; Yin, Yan; Ge, Bin; Zhan, Tian-wen; Chen, X.B.; Feng, Jing; Shu, Ting; Zhang, J.D.; Wang, X. Xinxin

doi:10.1017/s0263034607000705

Cited by 41 publications

(14 citation statements)

References 13 publications

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“…The structure of the IEBA is shown in Figure 8. It consists of the primary storage capacitor, triggered spark-gap switch Zhang et al, 2010) the magnetic core Tesla transformer, the water Blumlein line, main switch, and the field-emission diode (load) (Liu et al, 2007a(Liu et al, , 2007b(Liu et al, , 2007c. The water with a resistivity of more than 10 MΩcm is used as the dielectric of the Blumlein PFL.…”

Section: Resultsmentioning

confidence: 99%

“…Intense electron-beam accelerator (IEBA) based on Tesla transformer has been researched widely (Katsuki et al, 2001;Liu et al, 2007aLiu et al, , 2007bLiu et al, , 2007cCheng et al, 2009aCheng et al, , 2009bPeng et al, 2010) in the field of pulsed power. Tesla transformer, which can be either air core (Cheng et al, 2009a(Cheng et al, , 2009bLim & Cho, 2010) or magnetic core (Bykov, 1992;Katsuki et al, 2001;Korovin et al, 2001), was proposed by Nikola Tesla.…”

Section: Introdutionmentioning

confidence: 99%

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Study of low impedance intense electron-beam accelerator based on magnetic core Tesla transformer

Liu¹,

Zhang²,

Yang³

et al. 2012

Laser Part. Beams

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An intense electron-beam accelerator, which consists of a primary storage capacitor system, a magnetic core Tesla transformer, Blumlein pulse forming line of water dielectric, and a field-emission diode, are constructed and described. The experimental results show that the output voltage of transformer is more than 740 kV, the rise time is about 5 μs, the diode voltage is about 596 kV, electron beam current is about 60 kA, the duration is about 100 ns, and the power is 36 GW when charging voltage is 40 kV. It was suitable to drive magnetically insulated transmission line oscillator. And it can be also used in materials surface modification. This accelerator is very compact and works stably and reliably.

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Section: Resultsmentioning

confidence: 99%

Section: Introdutionmentioning

confidence: 99%

Study of low impedance intense electron-beam accelerator based on magnetic core Tesla transformer

Liu¹,

Zhang²,

Yang³

et al. 2012

Laser Part. Beams

View full text Add to dashboard Cite

show abstract

“…At present, the increase of power and repetitive rate and the duration of the output pulse (Liu et al, 2007;Yatsui et al, 2005) are the important development trend for an accelerator, but improving electron-beam quality is also important for the requirement of applications. Especially in the application of the high power microwave generators, the ideal pulse voltage is the flat-top rectangular pulse with fast rise-time and fall-time, and the plateau-time should be long enough, because the typical HPMG can operate at the highest of efficiency in this pulse voltage (Robert & Edl, 2001).…”

Section: Introductionmentioning

confidence: 99%

Effect of transition section between the main switch and middle cylinder of Blumlein pulse forming line on the diode voltage of intense electron-beam accelerators

et al. 2009

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The rise-time of the pulse on the diode of the intense electron-beam accelerators (IEBA) is one of the important factors that affect the quality and characteristic of the output beam current of the IEBA. In this paper, effect of the transition section between the main switch and middle cylinder of strip spiral Blumlein line (SSBL) on the diode voltage of IEBA is analyzed in theory, based on the theoretical analysis of the wave propagation along the Blumlein pulse forming line (BPFL), the traveling time of the transition section has a great effect on the rise-time, the plateau-time, and the fall-time of the output voltage at the matching load. Furthermore, the operation of the whole accelerator consisting of the primary energy-storage capacitor, the Tesla transformer, a main switch, the transition section, BPFL, and a resistive load was simulated using a circuit-simulation code called PSpice, and the dependence of the output voltage on the inductance of the main switch and the transition section was obtained. It was found from the wave propagation theory and the circuit simulation using computer results that the wave traveling time of the transition section between the main switch and the middle cylinder of the SSBL influences considerably the rise-time, plateau-time, and fall-time of the voltage waveform at the matching load. In order to get an ideal square pulse voltage waveform at the matching load and to improve the electron beam quality of such an accelerator, the wave traveling time of the transition section should be designed as soon as possible. At last, a couple of contrastive experiments are performed on two kinds of IEBA. The experimental results agree with the theoretical analysis and simulated results.

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“…Though electron beams are today often generated by intense laser interaction with matter (Koyama et al, 2006;Lifschitz et al, 2006;Mangles et al, 2006;Nakamura et al, 2006;Niu et al, 2008;Sakai et al, 2006), the research field of a beam generation by gas discharges and acceleration by pulsed power technique is still of great interest from the view point of scientists and engineers (Dewald et al, 1998;Frank et al, 1998Frank et al, , 1999Liu, Yin et al, 2007;Wong et al, 2007). A plasma-cathode electron source is an electron beam generator in which the beam is formed by electron emission from a plasma surface.…”

Section: Introductionmentioning

confidence: 99%

Fore-vacuum plasma-cathode electron sources

2008

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This paper presents a review of physical principles, design, and performances of plasma-cathode direct current (dc) electron beam guns operated in so called fore-vacuum pressure (1-15 Pa). That operation pressure range was not reached before for any kind of electron sources. A number of unique parameters of the e-beam were obtained, such as electron energy (up to 25 kV), dc beam current (up 0.5 A), and total beam power (up to 7 kW). For electron beam generation at these relatively high pressures, the following special features are important: high probability of electrical breakdown within the accelerating gap, a strong influence of back-streaming ions on both the emission electrode and the emitting plasma, generation of secondary plasma in the beam propagation region, and intense beam-plasma interactions that lead in turn to broadening of the beam energy spectrum and beam defocusing. Yet other unique peculiarities can occur for the case of ribbon electron beams, having to do with local maxima in the lateral beam current density distribution. The construction details of several plasma-cathode electron sources and some specific applications are also presented.

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An electron-beam accelerator based on spiral water PFL

Cited by 41 publications

References 13 publications

Study of low impedance intense electron-beam accelerator based on magnetic core Tesla transformer

Study of low impedance intense electron-beam accelerator based on magnetic core Tesla transformer

Effect of transition section between the main switch and middle cylinder of Blumlein pulse forming line on the diode voltage of intense electron-beam accelerators

Fore-vacuum plasma-cathode electron sources

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