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Title: Inductive Voltage Adder Driven X-Ray Sources for Hydrodynamic Radiography

Abstract

Inductive Voltage Adder (IVA) accelerators were developed to provide high-current (100s of kA) power pulses at high voltage (up to 20 MV) using robust modular components. This architecture simultaneously resolves problems found in conventional pulsed and linear induction accelerators. A variety of high-brightness pulsed x-ray radiographic sources are needed from sub-megavolt to 16-MeV endpoints with greater source brightness (dose/spot) than presently available. We are applying IVA systems to produce very intense (up to 75 TW/cm{sup 2}) electron beams for these flash radiographic applications. The accelerator electromagnetic pulse is converted to a directed electron beam at the end of a self-magnetically insulated vacuum transmission line. The cantilevered cathode threading the accelerator cavities terminates in a small (1-mm diameter) needle, producing the electron beam which is transported to a grounded bremsstrahlung converter within a strong ({approximately}50-T) axial magnetic field. These systems produce mm-sized stable electron beams, yielding very intense x-ray sources. Detailed simulations of the electron beam generation, transport, and target interaction are presented along with scaling laws for the radiation production and x-ray spot size. Experimental studies confirm these simulations and show this reliable, compact, and inexpensive technology scales to 1000-R doses a meter from a mm-diameter source in 50 ns.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (US); Sandia National Labs., Livermore, CA (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
7873
Report Number(s):
SAND98-2814C
TRN: US0101829
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: 12th IEEE International Pulsed Power Conference 1999, Monterey, CA (US), 06/27/1999--06/30/1999; Other Information: PBD: 17 Jun 1999
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; INDUSTRIAL RADIOGRAPHY; ELECTROMAGNETIC PULSES; ELECTRON BEAMS; MAGNETIC FIELDS; SCALING LAWS; X-RAY SOURCES; ACCELERATOR FACILITIES

Citation Formats

Bailey, V, Cordova, S, Droemer, D, Gustwiller, J, Hunt, E, Johnson, D L, MacLeod, G, Maenchen, John, Menge, P, Molina, I, Oliver, B, Olson, C, Rosenthal, S, Rovang, D, Smith, I, Welch, D, and Woo, L. Inductive Voltage Adder Driven X-Ray Sources for Hydrodynamic Radiography. United States: N. p., 1999. Web.
Bailey, V, Cordova, S, Droemer, D, Gustwiller, J, Hunt, E, Johnson, D L, MacLeod, G, Maenchen, John, Menge, P, Molina, I, Oliver, B, Olson, C, Rosenthal, S, Rovang, D, Smith, I, Welch, D, & Woo, L. Inductive Voltage Adder Driven X-Ray Sources for Hydrodynamic Radiography. United States.
Bailey, V, Cordova, S, Droemer, D, Gustwiller, J, Hunt, E, Johnson, D L, MacLeod, G, Maenchen, John, Menge, P, Molina, I, Oliver, B, Olson, C, Rosenthal, S, Rovang, D, Smith, I, Welch, D, and Woo, L. Thu . "Inductive Voltage Adder Driven X-Ray Sources for Hydrodynamic Radiography". United States. https://www.osti.gov/servlets/purl/7873.
@article{osti_7873,
title = {Inductive Voltage Adder Driven X-Ray Sources for Hydrodynamic Radiography},
author = {Bailey, V and Cordova, S and Droemer, D and Gustwiller, J and Hunt, E and Johnson, D L and MacLeod, G and Maenchen, John and Menge, P and Molina, I and Oliver, B and Olson, C and Rosenthal, S and Rovang, D and Smith, I and Welch, D and Woo, L},
abstractNote = {Inductive Voltage Adder (IVA) accelerators were developed to provide high-current (100s of kA) power pulses at high voltage (up to 20 MV) using robust modular components. This architecture simultaneously resolves problems found in conventional pulsed and linear induction accelerators. A variety of high-brightness pulsed x-ray radiographic sources are needed from sub-megavolt to 16-MeV endpoints with greater source brightness (dose/spot) than presently available. We are applying IVA systems to produce very intense (up to 75 TW/cm{sup 2}) electron beams for these flash radiographic applications. The accelerator electromagnetic pulse is converted to a directed electron beam at the end of a self-magnetically insulated vacuum transmission line. The cantilevered cathode threading the accelerator cavities terminates in a small (1-mm diameter) needle, producing the electron beam which is transported to a grounded bremsstrahlung converter within a strong ({approximately}50-T) axial magnetic field. These systems produce mm-sized stable electron beams, yielding very intense x-ray sources. Detailed simulations of the electron beam generation, transport, and target interaction are presented along with scaling laws for the radiation production and x-ray spot size. Experimental studies confirm these simulations and show this reliable, compact, and inexpensive technology scales to 1000-R doses a meter from a mm-diameter source in 50 ns.},
doi = {},
url = {https://www.osti.gov/biblio/7873}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {6}
}

Conference:
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