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Title: The TriMeV accelerator for pulsed power driven radiography experiments

Abstract

TriMeV is a compact 3 MeV, 30 kA electron beam accelerator driving an x-ray radiographic source. it was previously operated by French researchers and has recently been purchased by Bechtel Nevada for experiments in Las Vegas. In normal operating mode the accelerator emits an e-beam from a flat cathode which focuses in a {approximately}10 Torr Nitrogen gas cell onto a flat bremsstrahlung target. The extremely fast 3ns rise-time of the TriMeV voltage pulse is ideal for studying beam transport issues. A series of radiographic source optimization experiments planned in collaboration with Sandia National Laboratories will investigate different diode configurations to reduce the radiographic spot size. Both ballistic propagation and nonneutralized transport, where the self-fields pinch the beam, will be studied. A magnetically-immersed diode, where a cathode and confined in an {approximately}12 T solenoidal magnetic field during acceleration to the target in vacuum, will also be studied. This immersed diode previously demonstrated < 2-mm spots on the Hermes III accelerator. It is anticipated that similar results will be attained on TriMeV. A review of the operating parameters, geometry, and electrical characteristics will be presented along with an outline of the experimental program and a description of the diode and transport configurationsmore » studied. The most recent shot data will also be presented with an emphasis on the results form the immersed diode experiments.« less

Authors:
; ;  [1]
  1. and others
Publication Date:
Research Org.:
Bechtel Nevada, Las Vegas, NV (US)
Sponsoring Org.:
USDOE
OSTI Identifier:
20067598
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: 1999 IEEE International Conference on Plasma Science, Monterey, CA (US), 06/20/1999--06/24/1999; Other Information: PBD: 1999; Related Information: In: The 26th IEEE international conference on plasma science, 342 pages.
Country of Publication:
United States
Language:
English
Subject:
07 ISOTOPES AND RADIATION SOURCES; 43 PARTICLE ACCELERATORS; X-RAY SOURCES; X-RAY RADIOGRAPHY; ELECTRON BEAMS; ACCELERATORS; FOCUSING; BEAM OPTICS; BEAM TRANSPORT; OPERATION

Citation Formats

Hunt, E, MacLeod, G, and Woo, L. The TriMeV accelerator for pulsed power driven radiography experiments. United States: N. p., 1999. Web.
Hunt, E, MacLeod, G, & Woo, L. The TriMeV accelerator for pulsed power driven radiography experiments. United States.
Hunt, E, MacLeod, G, and Woo, L. Thu . "The TriMeV accelerator for pulsed power driven radiography experiments". United States.
@article{osti_20067598,
title = {The TriMeV accelerator for pulsed power driven radiography experiments},
author = {Hunt, E and MacLeod, G and Woo, L},
abstractNote = {TriMeV is a compact 3 MeV, 30 kA electron beam accelerator driving an x-ray radiographic source. it was previously operated by French researchers and has recently been purchased by Bechtel Nevada for experiments in Las Vegas. In normal operating mode the accelerator emits an e-beam from a flat cathode which focuses in a {approximately}10 Torr Nitrogen gas cell onto a flat bremsstrahlung target. The extremely fast 3ns rise-time of the TriMeV voltage pulse is ideal for studying beam transport issues. A series of radiographic source optimization experiments planned in collaboration with Sandia National Laboratories will investigate different diode configurations to reduce the radiographic spot size. Both ballistic propagation and nonneutralized transport, where the self-fields pinch the beam, will be studied. A magnetically-immersed diode, where a cathode and confined in an {approximately}12 T solenoidal magnetic field during acceleration to the target in vacuum, will also be studied. This immersed diode previously demonstrated < 2-mm spots on the Hermes III accelerator. It is anticipated that similar results will be attained on TriMeV. A review of the operating parameters, geometry, and electrical characteristics will be presented along with an outline of the experimental program and a description of the diode and transport configurations studied. The most recent shot data will also be presented with an emphasis on the results form the immersed diode experiments.},
doi = {},
url = {https://www.osti.gov/biblio/20067598}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {7}
}

Conference:
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