Design of large sample silicon ingots irradiation facilities using MCNP5

•An optimization was made between the different types of thermal neutron filters.•The neutron filter had been used to generate a neutron spectrum similar to heavy water reactor neutron spectrum.•By using neutron filter light water reactors are able to irradiate silicon ingots with large diameters. D...

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Bibliographic Details
Published in:Annals of nuclear energy 2015-06, Vol.80, p.40-42
Main Authors: Abdellatief, Sarah S., Osman, Mossa, Agamy, Said A., Nagy, Mohamed E.S., Elkafas, A.A.
Format: Article
Language:English
Subjects:
Doping
Ingots
Irradiation
Light water reactors
Neutron flux
Neutron transmutation doping of silicon (NTD)
Nuclear reactor components
Silicon
Silicon radial resistivity gradient
Thermal neutron filter
Transmutation
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Summary:•An optimization was made between the different types of thermal neutron filters.•The neutron filter had been used to generate a neutron spectrum similar to heavy water reactor neutron spectrum.•By using neutron filter light water reactors are able to irradiate silicon ingots with large diameters. Design of large sample silicon ingots irradiation facilities in light water reactors need neutron flux adaptation. Neutron filters such as heavy water and graphite are used as neutron filters in 6, 8, 10, 12inches diameters. Neutron transmutation doping of silicon were done by using MCNP5 to fix the optimum neutron flux spectrum which gives an acceptable radial resistivity gradient (RRG). The calculation shows that silicon ingots up to 10inch diameter can be irradiated in light water research reactors using housing of neutron filter with dimensions that depend on the filter type and silicon ingot diameter.
ISSN:0306-4549
1873-2100
DOI:10.1016/j.anucene.2015.01.018