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Title: Field-Distortion Air-Insulated Switches for Next-Generation Pulsed-Power Accelerators

Abstract

We have developed two advanced designs of a field-distortion air-insulated spark-gap switch that reduce the size of a linear-transformer-driver (LTD) brick. Both designs operate at 200 kV and a peak current of ~50 kA. At these parameters, both achieve a jitter of less than 2 ns and a prefire rate of ~0.1% over 5000 shots. We have reduced the number of switch parts and assembly steps, which has resulted in a more uniform, design-driven assembly process. We will characterize the performance of tungsten-copper and graphite electrodes, and two different electrode geometries. The new switch designs will substantially improve the electrical and operational performance of next-generation pulsed-power accelerators.

Authors:
 [1];  [1];  [1];  [1];  [2];  [1];  [1];  [1];  [1];  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. Kinetech LLC, Cedar Crest, NM (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1395749
Report Number(s):
SAND-2017-10300
657236
DOE Contract Number:  
AC04-94AL85000; NA0003525
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 36 MATERIALS SCIENCE

Citation Formats

Wisher, Matthew Louis, Johns, Owen M., Breden, Eric Wayne, Calhoun, Jacob Daniel, Gruner, Frederick Rusticus, Hohlfelder, Robert James, Mulville, Thomas D., Muron, David J., Stoltzfus, Brian S., and Stygar, William A. Field-Distortion Air-Insulated Switches for Next-Generation Pulsed-Power Accelerators. United States: N. p., 2017. Web. doi:10.2172/1395749.
Wisher, Matthew Louis, Johns, Owen M., Breden, Eric Wayne, Calhoun, Jacob Daniel, Gruner, Frederick Rusticus, Hohlfelder, Robert James, Mulville, Thomas D., Muron, David J., Stoltzfus, Brian S., & Stygar, William A. Field-Distortion Air-Insulated Switches for Next-Generation Pulsed-Power Accelerators. United States. doi:10.2172/1395749.
Wisher, Matthew Louis, Johns, Owen M., Breden, Eric Wayne, Calhoun, Jacob Daniel, Gruner, Frederick Rusticus, Hohlfelder, Robert James, Mulville, Thomas D., Muron, David J., Stoltzfus, Brian S., and Stygar, William A. Fri . "Field-Distortion Air-Insulated Switches for Next-Generation Pulsed-Power Accelerators". United States. doi:10.2172/1395749. https://www.osti.gov/servlets/purl/1395749.
@article{osti_1395749,
title = {Field-Distortion Air-Insulated Switches for Next-Generation Pulsed-Power Accelerators},
author = {Wisher, Matthew Louis and Johns, Owen M. and Breden, Eric Wayne and Calhoun, Jacob Daniel and Gruner, Frederick Rusticus and Hohlfelder, Robert James and Mulville, Thomas D. and Muron, David J. and Stoltzfus, Brian S. and Stygar, William A.},
abstractNote = {We have developed two advanced designs of a field-distortion air-insulated spark-gap switch that reduce the size of a linear-transformer-driver (LTD) brick. Both designs operate at 200 kV and a peak current of ~50 kA. At these parameters, both achieve a jitter of less than 2 ns and a prefire rate of ~0.1% over 5000 shots. We have reduced the number of switch parts and assembly steps, which has resulted in a more uniform, design-driven assembly process. We will characterize the performance of tungsten-copper and graphite electrodes, and two different electrode geometries. The new switch designs will substantially improve the electrical and operational performance of next-generation pulsed-power accelerators.},
doi = {10.2172/1395749},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Sep 01 00:00:00 EDT 2017},
month = {Fri Sep 01 00:00:00 EDT 2017}
}

Technical Report:

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