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U.S. Department of Energy
Office of Scientific and Technical Information

FXR one-nanosecond-jitter switch

Conference ·
OSTI ID:5342340

A switching system using low-jitter spark gaps has been designed for a 20 MeV Flash X-Ray (FXR) linear induction accelerator that is being built at the Lawrence Livermore National Laboratory. The accelerator, which is now under construction, will consist of 54 modules connected in tandem. Each module will contribute up to 400 keV of energy to the electron beam traversing it. The experimental work included a test of one accelerator module designed to produce 400 keV. Of particular concern was the thorough characterization of the Blumlein switch in terms of lifetime, voltage hold off and operating pressure range to produce minimal jitter and an acceptably low prefire rate. The data was recorded by means of a computer-based data-acquisition system which was set up for later, automatic data reduction and display fo the results. Optimization of the spark gap operating parameters resulted in a firing jitter of less than one nanosecond rms.

Research Organization:
California Univ., Livermore (USA). Lawrence Livermore National Lab.
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
5342340
Report Number(s):
UCRL-83912; CONF-800640-15
Country of Publication:
United States
Language:
English