A high voltage pulsed power supply for capillary discharge waveguide applications

Salima Saleh Abu-Azoum, Mark Wiggins, Riju Issac, Gregor H. Welsh, Gregory Vieux, Mihai Ganciu, Dino Jaroszynski

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

We present an all solid-state, high voltage pulsed power supply for inducing stable plasma formation (density ∼1018 cm−3) in gas-filled capillary discharge waveguides. The pulser (pulse duration of 1 μs) is based on transistor switching and wound transmission line transformer technology. For a capillary of length 40 mm and diameter 265 μm and gas backing pressure of 100 mbar, a fast voltage pulse risetime of 95 ns initiates breakdown at 13 kV along the capillary. A peak current of ∼280 A indicates near complete ionization, and the r.m.s. temporal jitter in the current pulse is only 4 ns. Temporally stable plasma formation is crucial for deploying capillary waveguides as plasma channels in laser-plasma interaction experiments, such as the laser wakefield accelerator.
LanguageEnglish
Article number063505
Number of pages4
JournalReview of Scientific Instruments
Volume82
Issue number6
Early online date21 Jun 2011
DOIs
Publication statusPublished - 2011

Fingerprint

power supplies
high voltages
Waveguides
waveguides
Plasmas
Electric potential
Plasma interactions
Lasers
plasma interaction experiment
Jitter
Gases
Discharge (fluid mechanics)
laser plasma interactions
Ionization
Particle accelerators
Electric lines
backups
Transistors
pulses
gases

Keywords

  • lines
  • wakefield accelerators
  • lasers
  • beams
  • plasma filled waveguides

Cite this

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abstract = "We present an all solid-state, high voltage pulsed power supply for inducing stable plasma formation (density ∼1018 cm−3) in gas-filled capillary discharge waveguides. The pulser (pulse duration of 1 μs) is based on transistor switching and wound transmission line transformer technology. For a capillary of length 40 mm and diameter 265 μm and gas backing pressure of 100 mbar, a fast voltage pulse risetime of 95 ns initiates breakdown at 13 kV along the capillary. A peak current of ∼280 A indicates near complete ionization, and the r.m.s. temporal jitter in the current pulse is only 4 ns. Temporally stable plasma formation is crucial for deploying capillary waveguides as plasma channels in laser-plasma interaction experiments, such as the laser wakefield accelerator.",
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A high voltage pulsed power supply for capillary discharge waveguide applications. / Abu-Azoum, Salima Saleh; Wiggins, Mark; Issac, Riju; Welsh, Gregor H.; Vieux, Gregory; Ganciu, Mihai; Jaroszynski, Dino.

In: Review of Scientific Instruments, Vol. 82, No. 6, 063505, 2011.

Research output: Contribution to journalArticle

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AU - Abu-Azoum, Salima Saleh

AU - Wiggins, Mark

AU - Issac, Riju

AU - Welsh, Gregor H.

AU - Vieux, Gregory

AU - Ganciu, Mihai

AU - Jaroszynski, Dino

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