NDLI: PIC simulations of power flow in the Ursa minor linear transformer driver for radiographic applications

Content Provider	IEEE Xplore Digital Library
Author	Pointon, T.D. Leckbee, J.J. Oliver, B.V.
Copyright Year	2013
Description	Author affiliation: Sandia Nat. Labs., Albuquerque, NM, USA (Pointon, T.D.; Leckbee, J.J.; Oliver, B.V.)
Abstract	Summary form only given. The linear transformer driver (LTD) is a promising technology for building a compact, high-voltage driver for radiographic applications. The 21 cavity Ursa Minor LTD at Sandia National Laboratories is designed to deliver an output voltage of 2.5 MV. This system provides the first opportunity to evaluate the effects of substantial electron flow in a many-cavity driver at the low end of the voltage range needed for radiography. Each cavity has ten bricks (two capacitors and a single switch). Improving the accuracy and reliability of trigger timing for the 210 switches is a major focus of the research effort on this system.Two PIC simulation models of this driver are being developed with the Quicksilver code at Sandia. A 2-D, azimuthally symmetric, r-z model can efficiently simulate the entire system, including the diode. Each of the 21 cavities is driven with its own external RLC circuit that can be independently triggered. The most recent work with this model has been addressing issues in the diode. In addition, a new, full-360° 3-D model is being used to address the effects of azimuthal asymmetry in the MITL. Currently, the first 14 cavities are modeled with an equivalent single coaxial feed, and each of the last seven cavities is driven by ten independently triggered RLC circuits, uniformly distributed in azimuth. Electrons are emitted from the central cathode with a conventional space-charge-limited emission model.
Starting Page	1
Ending Page	1
File Size	109360
Page Count	1
File Format	PDF
ISBN	9781467351713
ISSN	07309244
DOI	10.1109/PLASMA.2013.6633383
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-16
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Integrated circuit modeling Cavity resonators Radiography Laboratories Timing Switches RLC circuits
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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PIC simulations of power flow in the URSA minor linear transformer driver for radiographic applications

PIC simulations of power flow in the URSA minor linear transformer driver for radiographic applications

PIC simulations of power flow in a linear transformer driver for radiographic applications

PIC simulations of power flow in the Ursa Minor linear transformer driver for radiographic applications.

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PIC simulations of power flow in a linear transformer driver for radiographic applications.

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