Nucleonic analysis of the ETF neutral-beam-injector-duct and vacuum-pumping-duct shields
A nucleonic analysis of the Engineering Test Facility neutral-beam-injector-duct and vacuum-pumping-duct shields has been made using a hybrid Monte Carlo/discrete-ordinates method. This method used Monte Carlo to determine internal and external boundary surface sources for subsequent discrete-ordinates calculations of the neutron and gamma-ray transport through the shields. Confidence was provided in both the hybrid method and the results obtained through a comparison with three-dimensional Monte Carlo results. Also determined in the analysis were the energy and angular distributions of neutrons and gamma rays entering the neutral-beam-injector duct from the toroidal plasma chamber, as well as exiting the duct into the neutral-beam-injector chamber. In addition, the energy and angular distributions of neutrons entering the vacuum-pumping chamber were determined.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6476073
- Report Number(s):
- LA-8830-MS; ON: DE81023986; TRN: 81-011896
- Country of Publication:
- United States
- Language:
- English
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VACUUM SYSTEMS
ANGULAR DISTRIBUTION
ENERGY SPECTRA
GAMMA RADIATION
NEUTRAL BEAM SOURCES
SHIELDING
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DISTRIBUTION
ELECTROMAGNETIC RADIATION
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NEUTRAL-PARTICLE TRANSPORT
RADIATION TRANSPORT
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SPECTRA
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