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

Abstract

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.

A Method to design composite insulation structures based on reliability for pulsed power systems

“…Coaxial HV vacuum insulators are widely used in the Teslatype pulsed power generators (Zhao et al, 2010;2013a;Peng et al, 2011;Liu et al, 2012) and others types of generators (Xun et al, 2008;Cheng et al, 2012). With a coaxial HV vacuum insulator, the proposed method to design composite insulation structures is exemplified.…”

“…Generally, there are three types of composite insulation structures: gas/solid insulators (Xiao et al, 2010;Peng et al, 2011;Shao et al, 2012;Zhao et al, 2013a), liquid/solid insulators (Wang et al, 2005;Cheng et al, 2012;Liu et al, 2012;Zhao et al, 2012;2013b;2013c), and vacuum/solid insulators (Kiricov et al, 2003;Milton, 1972;Miller, 1989;1993;Zhao et al, 2010;Wang et al, 2012;. These insulators play both the roles of separating a megavolt pulse voltage and presenting mechanical support.…”

Plasma-target surface interaction during non-equilibrium plasma irradiation at atmospheric pressure: Generation of dusty plasma

“…To develop the relativistic electron beam sources, the cathode materials are the key factor, and carbon-fiber cathode has been an appropriate candidate to generate electron beam (Cheng et al, 2013;Fan et al, 2013;Liu et al, 2012;Peng et al, 2011;Shao et al, 2012;Teng et al, 2013;Zhang et al, 2013a;2013b;2012b). Carbon-fibers are usually utilized to reinforce composite materials due to their superior mechanical properties such as high specific strength modulus, low expansion coefficient, small density, good environmental compatibility, long-term durability, and high resistance to chemical corrosion (Li et al, 2009a;Pan et al, 2010;Tiwari et al, 2011).…”