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Proceedings Paper

PHERMEX-Pulsed High Energy Radiographic Machine Emitting X-Rays
Author(s): Richard D. Dick
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Paper Abstract

The PHERMEX facility used to provide flash radiographs of explosives and explosive-driven metal systems is described. With this facility, precision radiographs of large objects containing materials with high atomic number and high density are attainable. PHERMEX encom-pass the high-current, three-cavity, 30-MeV linear electron accelerator; the 50-MHz radio-frequency power source to drive the cavities; timing, and signal detection system; and a data-acquisition system. Some unique features of PHERMEX are reliability; very intense sub-microsecond bremsstrahlung source rich in 4- to 8-MeV x rays; less than 1.0-mm-diam spot size; precision determination of edges, discontinuities, and areal-mass distribution; and flash radiographs of large explosive systems close to the x-ray target. Some aspects of the PHERMEX -upgrading program are discussed. The program will result(1) in an increased electron-beam energy to about 50 MeV, (2) the use of an electron-gun pulser that is capable of producing three-time-adjustable pulses for obtaining three "radiographic" pictures of a single explosive event, (3) an increased electron injection energy of 1.25 MeV, (4) the capability for recording high-speed signals, and (5) the use of computers to assist the monitoring and control of the data-acquisition system and the PHERMEX accelerator.*

Paper Details

Date Published: 9 August 1983
PDF: 11 pages
Proc. SPIE 0312, 1st European Conf on Cineradiography with Photons or Particles, (9 August 1983); doi: 10.1117/12.932946
Show Author Affiliations
Richard D. Dick, Los Alamos National Laboratory (United States)

Published in SPIE Proceedings Vol. 0312:
1st European Conf on Cineradiography with Photons or Particles
Jacques J. Marilleau, Editor(s)

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