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Diagnostics on the COBRA pulsed power generator

Rev. Sci. Instrum. 77, 10F521 (2006); doi:10.1063/1.2229189

Published 6 October 2006

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T. A. Shelkovenko, D. A. Chalenski, K. M. Chandler, J. D. Douglass, J. B. Greenly, D. A. Hammer, B. R. Kusse, R. D. McBride, and S. A. Pikuz
Laboratory of Plasma Studies, Cornell University, Rhodes Hall, Ithaca, New York 14853
The COBRA pulsed power generator has a variable current pulse wave form and amplitude (95–180  ns rise time, up to 1  MA peak current). It was designed to study wire array Z pinches and X pinches, including plasma formation, pinch implosion dynamics, and pinch plasma parameters as a function of current rise time. These loads have been studied using an extensive set of diagnostics with spatial and/or temporal resolution. The set of electrical diagnostics on the COBRA generator includes Rogowski coils to monitor the total load current and the current through individual return current posts, and there is also an inductive voltage monitor. A set of extreme ultraviolet and x-ray detectors is used to study the load radiation. Wire array and X pinch plasma formation and dynamics are studied using two-frame, point projection X-pinch x-ray imaging as well as with multiframe laser probing. Flat potassium acid phtalate crystal (KAP), convex, extreme luminosity imaging conical spectrograph, and focusing spectrograph with spatial resolution with mica crystal, pinhole cameras, and a camera with a slit and a step filter set (slip step-wedge camera) can be used in each pulse to monitor the x-ray emission from the X pinch(es) and arrays in several spectral bands. ©2006 American Institute of Physics
History: Presented 11 May 2006; received 8 May 2006; accepted 16 June 2006; published 6 October 2006
Permalink: http://link.aip.org/link/?RSINAK/77/10F521/1
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KEYWORDS and PACS

Keywords
PACS
  • 52.70.La
    X-ray and gamma-ray plasma diagnostic measurements
  • 52.70.Ds
    Electric and magnetic plasma diagnostic measurements
  • 52.70.Kz
    Optical (ultraviolet, visible, infrared) plasma diagnostic measurements
  • 52.59.Qy
    Wire array Z-pinches
  • 52.50.Lp
    Plasma production and heating by shock waves and compression
  • 52.25.Os
    Emission, absorption, and scattering of electromagnetic radiation from plasmas
  • YEAR: 2006

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PUBLICATION DATA

ISSN:
0034-6748 (print)   1089-7623 (online)
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REFERENCES (15)
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