Uncertainties in cylindrical anode current inferences on pulsed power drivers

Journal Article · Thu May 31 00:00:00 EDT 2018 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.5026983· OSTI ID:1464195

Porwitzky, Andrew James ^[1]; Brown, Justin ^[1]

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1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

For over a decade, velocimetry based techniques have been used to infer the electrical current delivered to dynamic materials properties experiments on pulsed power drivers such as the Z Machine. Though originally developed for planar load geometries, in recent years, inferring the current delivered to cylindrical coaxial loads has become a valuable diagnostic tool for numerous platforms. Presented is a summary of uncertainties that can propagate through the current inference technique when applied to expanding cylindrical anodes. An equation representing quantitative uncertainty is developed which shows the unfold method to be accurate to a few percent above 10 MA of load current.

• Research Organization: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: AC04-94AL85000
• OSTI ID: 1464195
• Report Number(s): SAND-2018-1779J; 666326
• Journal Information: Physics of Plasmas, Vol. 25, Issue 6; ISSN 1070-664X
• Publisher: American Institute of Physics (AIP)
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY