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Title: Low pressure spark gap triggered by an ion diode

Abstract

Spark gap apparatus for use as an electric switch operating at high voltage, high current and high repetition rate. Mounted inside a housing are an anode, cathode and ion plate. An ionizable fluid is pumped through the chamber of the housing. A pulse of current to the ion plate causes ions to be emitted by the ion plate, which ions move into and ionize the fluid. Electric current supplied to the anode discharges through the ionized fluid and flows to the cathode. Current stops flowing when the current source has been drained. The ionized fluid recombines into its initial dielectric ionizable state. The switch is now open and ready for another cycle.

Inventors:
 [1]
  1. (Livermore, CA)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
865386
Patent Number(s):
US 4507589
Assignee:
United States of America as represented by United States (Washington, DC) LLNL
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
pressure; spark; gap; triggered; diode; apparatus; electric; switch; operating; voltage; current; repetition; rate; mounted; inside; housing; anode; cathode; plate; ionizable; fluid; pumped; chamber; pulse; causes; emitted; move; ionize; supplied; discharges; ionized; flows; stops; flowing; source; drained; recombines; initial; dielectric; cycle; mounted inside; repetition rate; electric current; spark gap; current source; current supplied; /315/313/

Citation Formats

Prono, Daniel S. Low pressure spark gap triggered by an ion diode. United States: N. p., 1985. Web.
Prono, Daniel S. Low pressure spark gap triggered by an ion diode. United States.
Prono, Daniel S. Tue . "Low pressure spark gap triggered by an ion diode". United States. doi:. https://www.osti.gov/servlets/purl/865386.
@article{osti_865386,
title = {Low pressure spark gap triggered by an ion diode},
author = {Prono, Daniel S.},
abstractNote = {Spark gap apparatus for use as an electric switch operating at high voltage, high current and high repetition rate. Mounted inside a housing are an anode, cathode and ion plate. An ionizable fluid is pumped through the chamber of the housing. A pulse of current to the ion plate causes ions to be emitted by the ion plate, which ions move into and ionize the fluid. Electric current supplied to the anode discharges through the ionized fluid and flows to the cathode. Current stops flowing when the current source has been drained. The ionized fluid recombines into its initial dielectric ionizable state. The switch is now open and ready for another cycle.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1985},
month = {Tue Jan 01 00:00:00 EST 1985}
}

Patent:

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  • Spark gap apparatus for use as an electric switch operating at high voltage, high current and high repetition rate. Mounted inside a housing are an anode, cathode and ion plate. An ionizable fluid is pumped through the chamber of the housing. A pulse of current to the ion plate causes ions to be emitted by the ion plate, which ions move into and ionize the fluid. Electric current supplied to the anode discharges through the ionized fluid and flows to the cathode. Current stops flowing when the current source has been drained. The ionized fluid recombines into its initial dielectricmore » ionizable state. The switch is now open and ready for another cycle.« less
  • Spark gap apparatus for use as an electric switch operating at high voltage, high current and high repetition rate. Mounted inside a housing are an anode, cathode and ion plate. An ionizable fluid is pumped through the chamber of the housing. A pulse of current to the ion plate causes ions to be emitted by the ion plate, which ions move into and ionize the fluid. Electric current supplied to the anode discharges through the ionized fluid and flows to the cathode. Current stops flowing when the current source has been drained. The ionized fluid recombines into its initial dielectricmore » ionizable state. The switch is now open and ready for another cycle.« less
  • An energy absorption circuit for fault protection of a load pulsed by an LC-type pulse forming network (PFN) is connected at one end of the PFN opposite from the load. The circuit is comprised of a triggerable spark gap (TSG) switch and a discharge resistor connected in series across the one end of the PFN. A capacitive voltage dividing circuit and a voltage dropping resistor in series are also connected across the one end of the PFN. An intermediate voltage junction of the capacitive voltage dividing circuit is connected to the trigger electrode of the TSG switch to trigger themore » switch on when a reverse voltage wavefront reflected from a faulty load appears across the dropping resistor to add to the voltage of the capacitive voltage divider, thereby to arc one gap in the switch, whereupon arcing in the other gap ensues.« less
  • A discharge device for use with pulsed, CO/sub 2/ laser power conditioner systems, is disclosed. The device is comprised of Elkonite or molybdenum electrodes in a controlled nitrogen-xenon-oxygen environment, and having long life potential of close to twenty million discharges possible.
  • High energy particle accelerators using compact, high gradient cavities will require small, highly reliable, triggered spark gaps. This paper will discuss the design and development of V/N triggered spark gaps operating from 520 kV to 1280 kV. Spark gap jitter of <3 ns has been obtained with trigger voltages of 60 kV. Capacitively balancing the trigger blade electrode, coupled with a trigger voltage rise time of 10 ns, produces three or more arcs across the main electrode gaps. A 2.3 ..cap omega.. injector using 12 parallel spark gaps operating at 1280 kV has been successfully tested. The total number ofmore » shots on this injector exceeds 700 without having to refurbish the gaps. A 0.44 ..cap omega.. accelerating cavity with 24 parallel spark gaps and operating at 520 kV charge voltage has also been tested.« less