Development of a 5.4 MV laser triggered gas switch for multimodule, multimegampere pulsed power drivers | Zendy

Keith LeChien | Zendy; M. E. Savage | Zendy; V. Anaya | Zendy; David E. Bliss | Zendy; W. T. Clark | Zendy; J.P. Corley | Zendy; G. Feltz | Zendy; J. Garrity | Zendy; D. Guthrie | Zendy; K.C. Hodge | Zendy; J. Maenchen | Zendy; Russell A. Maier | Zendy; K.R. Prestwich | Zendy; K.W. Struve | Zendy; W. A. Stygar | Zendy; T. Thompson | Zendy; J. Van Den Avyle | Zendy; P. Wakeland | Zendy; G. M. Wallace | Zendy; J. R. Woodworth | Zendy

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Development of a 5.4 MV laser triggered gas switch for multimodule, multimegampere pulsed power drivers

Author(s) -

Keith LeChien,

M. E. Savage,

V. Anaya,

David E. Bliss,

W. T. Clark,

J.P. Corley,

G. Feltz,

J. Garrity,

D. Guthrie,

K.C. Hodge,

J. Maenchen,

Russell A. Maier,

K.R. Prestwich,

K.W. Struve,

W. A. Stygar,

T. Thompson,

J. Van Den Avyle,

P. Wakeland,

G. M. Wallace,

J. R. Woodworth

Publication year - 2008

Publication title -

physical review special topics - accelerators and beams

Language(s) - English

Resource type - Journals

ISSN - 1098-4402

DOI - 10.1103/physrevstab.11.060402

Subject(s) - pulsed power , laser , jitter , electrical engineering , light gas gun , inertial confinement fusion , power (physics) , sulfur hexafluoride , nuclear engineering , materials science , optics , engineering , voltage , physics , projectile , quantum mechanics , metallurgy

Laser triggered, megavolt, megampere gas switches are frequently utilized to synchronize multiple pulsed power driver modules for inertial-confinement fusion, isentropic compression, and radiation physics experiments. The device developed to synchronize the 36 modules of the refurbished Z accelerator at Sandia National Laboratories is a 5.4 MV, 700 kA, sulfur-hexafluoride (SF_{6}) filled, laser triggered gas switch. At this operating level, switch jitter is 5 ns, the prefire rate is less than 0.1%, the average optic lifetime is greater than 200 shots, and the flashover rate is less than 1%. Over 1000 shots on a single-module test facility were conducted while iterating several potential design improvements, including utilizing low-erosion electrode material, varying SF_{6} pressure, and modifying internal switch geometry all while keeping the basic switch architecture and footprint constant. Results of this development effort are presented herein

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