Modelling of the Production of Source Neutrons from Low-Voltage Accelerated Deuterons on Titanium-Tritium Targets
Fast quasi-monoenergetic neutrons can be produced by accelerating charged deuterons on tritium solid targets. Benchmark experiments were performed in many laboratories with intense D-T neutron sources. The aim is to validate the computational models and nuclear data for fusion applications. The deta...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2008-01-01
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| Series: | Science and Technology of Nuclear Installations |
| Online Access: | http://dx.doi.org/10.1155/2008/340282 |
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| Summary: | Fast quasi-monoenergetic neutrons can be produced by accelerating
charged deuterons on tritium solid targets. Benchmark experiments
were performed in many laboratories with intense D-T neutron
sources. The aim is to validate the computational models and
nuclear data for fusion applications. The detailed information on
the neutron source term is highly important for the benchmark
analyses. At present, the MCNP family of codes cannot explicitly
model the D-T reaction for Deuterons in the KeV energy range. The
physics for the D-T neutron production was modelled at ENEA
(Italy) in the SOURCE and SRCDX subroutines to compile with the
MCNP source code. Some improvements to the original subroutines
were introduced. The differential cross-sections for the D-T
reaction from the ENDF/B-VII library were built into the code. The
relativistic approach was implemented for neutron kinematics. The
new D-T neutron source model was applied to the MCNP5 simulation
of the tungsten integral experiment performed at the OKTAVIAN
facility. The uncertainty associated with the realistic D-T
reactions was separated from the total uncertainty of the source
term. The outcome of the benchmark analysis was an improvement in
the quality of the computational model of the experiment. |
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| ISSN: | 1687-6075 1687-6083 |