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Title: Bremsstrahlung converter debris shields: test and analysis

Abstract

Electron beam accelerators are commonly used to create bremsstrahlung x-rays for effects testing. Typically, the incident electron beam strikes a sandwich of three materials: (1) a conversion foil, (2) an electron scavenger, and (3) a debris shield. Several laboratories, including Sandia National Laboratories, are developing bremsstrahlung x-ray sources with much larger test areas (approx. 200 to 500 cm/sup 2/) than ever used before. Accordingly, the debris shield will be much larger than before and subject to loads which could cause shield failure. To prepare for this eventuality, a series of tests were run on the Naval Surface Weapons Center's Casino electron beam accelerator (approx. 1 MeV electrons, 100 ns FWHM pulse, 45 kJ beam energy). The primary goal of these tests was to measure the stress pulse which loads a debris shield. These measurements were made with carbon gages mounted on the back of the converter sandwich. At an electron beam fluence of about 1 kJ/cm/sup 2/, the measured peak compressive stress was typically in the 1 to 2 kbar range. Measured peak compressive stress scaled in a roughly linear manner with fluence level as the fluence level was increased to 10 kJ/cm/sup 2/. The duration of the compressive pulsemore » was on the order of microseconds. In addition to the stress wave measurements, a limited number of tests were made to investigate the type of damage generated in several potential shield materials.« less

Authors:
;
Publication Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (USA)
OSTI Identifier:
5609801
Report Number(s):
SAND-83-0110
ON: DE84002147
DOE Contract Number:  
AC04-76DP00789
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 36 MATERIALS SCIENCE; BREMSSTRAHLUNG; TARGETS; MATERIALS TESTING; STRESSES; ARAMIDS; DYNAMIC LOADS; ELECTROMAGNETIC PULSES; ELECTRON BEAMS; EXPERIMENTAL DATA; KILO AMP BEAM CURRENTS; MEV RANGE 01-10; PULSES; SHIELDING; SHOCK WAVES; SIMULATION; BEAM CURRENTS; BEAMS; CURRENTS; DATA; ELECTROMAGNETIC RADIATION; ENERGY RANGE; INFORMATION; LEPTON BEAMS; MATERIALS; MEV RANGE; NUMERICAL DATA; PARTICLE BEAMS; PETROCHEMICALS; PETROLEUM PRODUCTS; PLASTICS; RADIATIONS; SYNTHETIC MATERIALS; TESTING; 430303* - Particle Accelerators- Experimental Facilities & Equipment; 360403 - Materials- Polymers & Plastics- Mechanical Properties- (-1987)

Citation Formats

Reedy, Jr, E D, and Perry, F C. Bremsstrahlung converter debris shields: test and analysis. United States: N. p., 1983. Web.
Reedy, Jr, E D, & Perry, F C. Bremsstrahlung converter debris shields: test and analysis. United States.
Reedy, Jr, E D, and Perry, F C. Sat . "Bremsstrahlung converter debris shields: test and analysis". United States.
@article{osti_5609801,
title = {Bremsstrahlung converter debris shields: test and analysis},
author = {Reedy, Jr, E D and Perry, F C},
abstractNote = {Electron beam accelerators are commonly used to create bremsstrahlung x-rays for effects testing. Typically, the incident electron beam strikes a sandwich of three materials: (1) a conversion foil, (2) an electron scavenger, and (3) a debris shield. Several laboratories, including Sandia National Laboratories, are developing bremsstrahlung x-ray sources with much larger test areas (approx. 200 to 500 cm/sup 2/) than ever used before. Accordingly, the debris shield will be much larger than before and subject to loads which could cause shield failure. To prepare for this eventuality, a series of tests were run on the Naval Surface Weapons Center's Casino electron beam accelerator (approx. 1 MeV electrons, 100 ns FWHM pulse, 45 kJ beam energy). The primary goal of these tests was to measure the stress pulse which loads a debris shield. These measurements were made with carbon gages mounted on the back of the converter sandwich. At an electron beam fluence of about 1 kJ/cm/sup 2/, the measured peak compressive stress was typically in the 1 to 2 kbar range. Measured peak compressive stress scaled in a roughly linear manner with fluence level as the fluence level was increased to 10 kJ/cm/sup 2/. The duration of the compressive pulse was on the order of microseconds. In addition to the stress wave measurements, a limited number of tests were made to investigate the type of damage generated in several potential shield materials.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {10}
}

Technical Report:
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