Control of neutron albedo in toroidal fusion reactors
The MCNP and ANISN codes have been used to obtain basic neutron albedo data for materials of interest for fusion applications. Simple physical models are presented which explain albedo dependence on pre- and post-reflection variables. The angular distribution of reflected neutrons. The energy spectra of reflected neutrons are presented, and it is shown that substantial variations in the total neutron current at the outboard wall of a torus can be effected by changing materials behind the inboard wall. Analyses show that a maximum of four isolated incident-current environments may be established simultaneously on the outboard side of a torus. With suitable inboard reflectors, global tritium breeding ratios significantly larger than unity can be produced in limited-coverage breeding blankets when the effects of outboard penetrations are included.
- Research Organization:
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- DOE Contract Number:
- AC02-76CH03073
- OSTI ID:
- 5761373
- Report Number(s):
- PPPL-2008; ON: DE84000521
- Resource Relation:
- Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
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Control of neutron albedo in toroidal fusion reactors
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Related Subjects
BREEDING BLANKETS
NEUTRON TRANSPORT THEORY
THERMONUCLEAR REACTORS
ALBEDO
COMPUTER CALCULATIONS
ENERGY SPECTRA
REFLECTION
TOROIDAL CONFIGURATION
ANNULAR SPACE
CONFIGURATION
REACTOR COMPONENTS
SPACE
SPECTRA
TRANSPORT THEORY
700201* - Fusion Power Plant Technology- Blanket Engineering