Recent advances in high-power ignitron development

The authors describe the advances made in high-power ignitron switching capabilities in a comparison study between conventional size D and size E tubes, demountable experimental tubes, and the new NL-9000 (Richardson Electronics). The authors discuss the differences in tube design and the associated...

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Bibliographic Details
Published in:IEEE transactions on electron devices 1991-04, Vol.38 (4), p.720-725
Main Authors: Loree, D.L., Giesselmann, M.G., Kristiansen, M., Shulski, A.P., Kihara, R.
Format: Article
Language:English
Subjects:
240100 - Power Systems- (1990-)
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700320 - Plasma Diagnostic Techniques & Instrumentation- (1992-)
700350 - Plasma Production, Heating, Current Drive, & Interactions- (1992-)
ANODES
Applied sciences
Charge transfer
DESIGN
ELECTRODES
ELECTROMAGNETIC RADIATION
ELECTRON TUBES
ELECTRONIC CIRCUITS
Electronic tubes, masers
Electronics
Exact sciences and technology
FAILURE MODE ANALYSIS
GAS DISCHARGE TUBES
High speed optical techniques
IGNITRONS
IMAGE PROCESSING
Interference
INTERFEROMETERS
INTERFEROMETRY
LAWRENCE LIVERMORE LABORATORY
MACH-ZEHNDER INTERFEROMETER
MEASURING INSTRUMENTS
MICROWAVE RADIATION
NATIONAL ORGANIZATIONS
Optical interferometry
Optical recording
PLASMA DIAGNOSTICS
Plasma materials processing
POWER TRANSMISSION AND DISTRIBUTION
PROCESSING
PULSE CIRCUITS
RADIATIONS
RECTIFIER TUBES
RESEARCH PROGRAMS
SHAPE
Shape control
SIZE
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
TRIGGER CIRCUITS
US AEC
US DOE
US ERDA
US ORGANIZATIONS
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Description
Summary:The authors describe the advances made in high-power ignitron switching capabilities in a comparison study between conventional size D and size E tubes, demountable experimental tubes, and the new NL-9000 (Richardson Electronics). The authors discuss the differences in tube design and the associated peak current and charge transfer capabilities and lifetime expectancies. The critical design criteria are the anode shape and placement in order to control the plasma and prevent prefires. Tube failure modes and recent studies on alternate ignitor schemes are presented. In addition, results of plasma diagnostics performed on a demountable ignitron with optical access to the discharge plasma are shown. Time-resolved images of the interference patterns from an optical Mach-Zehnder interferometer were recorded with a mechanical high-speed camera and evaluated with the help of image processing.< >
ISSN:0018-9383
1557-9646
DOI:10.1109/16.75196