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Title: Linear inductive voltage adders (IVA) for advanced hydrodynamic radiography

Abstract

The electron beam which drifts through the multiple cavities of conventional induction linacs (LIA) is replaced in an IVA by a cylindrical metal conductor which extends along the entire length of the device and effectuates the addition of the accelerator cavity voltages. In the approach to radiography, the linear inductive voltage adder drives a magnetically immersed electron diode with a millimeter diameter cathode electrode and a planar anode/bremsstrahlung converter. Both anode and cathode electrodes are immersed in a strong (15--50 T) solenoidal magnetic field. The electron beam cross section is approximately of the same size as the cathode needle and generates a similar size, very intense x-ray beam when it strikes the anode converter. An IVA driven diode can produce electron beams of equal size and energy as a LIA but with much higher currents (40--50 kA versus 4--5 kA), simpler hardware and thus lower cost. The authors present here first experimental validations of the technology utilizing HERMES 3 and SABRE IVA accelerators. The electron beam voltage and current were respectively of the order of 10 MV and 40 kA. X-ray doses of up to 1 kR {at} 1 m and spot sizes as small as 1.7 mm (at 200more » R doses) were measured.« less

Authors:
; ;  [1]
  1. and others
Publication Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
656777
Report Number(s):
SAND-98-0900C; CONF-980827-
ON: DE98006232; TRN: 99:000365
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: 19. international linac conference, Chicago, IL (United States), 23-28 Aug 1998; Other Information: PBD: [1998]
Country of Publication:
United States
Language:
English
Subject:
07 ISOTOPE AND RADIATION SOURCE TECHNOLOGY; 43 PARTICLE ACCELERATORS; X-RAY SOURCES; X-RAY RADIOGRAPHY; LINEAR ACCELERATORS; BEAM CURRENTS; PERFORMANCE; ELECTRON BEAMS; THERMIONIC DIODES

Citation Formats

Mazarakis, M G, Boyes, J D, and Johnson, D L. Linear inductive voltage adders (IVA) for advanced hydrodynamic radiography. United States: N. p., 1998. Web.
Mazarakis, M G, Boyes, J D, & Johnson, D L. Linear inductive voltage adders (IVA) for advanced hydrodynamic radiography. United States.
Mazarakis, M G, Boyes, J D, and Johnson, D L. Tue . "Linear inductive voltage adders (IVA) for advanced hydrodynamic radiography". United States. https://www.osti.gov/servlets/purl/656777.
@article{osti_656777,
title = {Linear inductive voltage adders (IVA) for advanced hydrodynamic radiography},
author = {Mazarakis, M G and Boyes, J D and Johnson, D L},
abstractNote = {The electron beam which drifts through the multiple cavities of conventional induction linacs (LIA) is replaced in an IVA by a cylindrical metal conductor which extends along the entire length of the device and effectuates the addition of the accelerator cavity voltages. In the approach to radiography, the linear inductive voltage adder drives a magnetically immersed electron diode with a millimeter diameter cathode electrode and a planar anode/bremsstrahlung converter. Both anode and cathode electrodes are immersed in a strong (15--50 T) solenoidal magnetic field. The electron beam cross section is approximately of the same size as the cathode needle and generates a similar size, very intense x-ray beam when it strikes the anode converter. An IVA driven diode can produce electron beams of equal size and energy as a LIA but with much higher currents (40--50 kA versus 4--5 kA), simpler hardware and thus lower cost. The authors present here first experimental validations of the technology utilizing HERMES 3 and SABRE IVA accelerators. The electron beam voltage and current were respectively of the order of 10 MV and 40 kA. X-ray doses of up to 1 kR {at} 1 m and spot sizes as small as 1.7 mm (at 200 R doses) were measured.},
doi = {},
url = {https://www.osti.gov/biblio/656777}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {9}
}

Conference:
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