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Linear Transformer Driver (LTD) technology is being developed for short pulse electron beam applications as well as high current Z-pinch drivers. Designs for both applications require low inductance spark gap switches which hold off 200 kV and trigger with low jitter. LTD cells or cavities typically contain many parallel switches which must close with low jitter to insure efficient operation of the...
Dielectric materials are a critical component of pulsed power systems. Often times these materials are the limiting factor in system design and operation. To aid in the understanding and prediction of the breakdown of polypropylene under pulsed operating conditions experimental evaluation and analysis of large area 50.8 cm×121.9 cm (20″×48″) sheets of 1.59 mm (1/16 in). polypropylene material between...
The use of electron beam accelerator systems is prevalent in industrial processing applications including cross-linking of polymers such as wire and cable insulation, curing of inks and coatings, food packaging, medical product sterilization and waste treatment. These applications require electron beam energies and currents which are enabled by a wide variety of conventional accelerator architectures...
The dielectric response of many high permittivity materials is nonlinear with both field and frequency. For example, ferroelectric materials exhibit a hysteretic polarization — electric field (P-E) response similar to the B-H curve of ferromagnetic materials. These P-E hysteresis loops are typically measured at low frequencies; the material behavior at high frequencies is less understood. To address...
Development of solid dielectric insulation concepts has enabled an ultra-low impedance high current driver concept called Genesis. A prototype demonstration called Protogen includes interfaces for up to twelve modules and can be operated in a repetitive mode to generate reliability data. Initial operation of Protogen is focusing on the integration of key solid dielectric concepts, dielectric lifetime,...
Dynamic materials properties research at Sandia National Laboratories has resulted in research that is advancing capabilities in precision programmable pulsed power systems operating in multi-mega amp regimes. Programmable pulse shaping capabilities require the gas switches in these systems to perform over a large range of dynamic operating conditions. Runtime, jitter, and the number of channels formed...
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