Implementation of neutron mirror modeling capability into MCNPX and its demonstration in first applications

F. X. Gallmeier; M. Wohlmuther; U. Filges; D. Kiselev; G. Muhrer

doi:10.13182/NT09-A9304

Implementation of neutron mirror modeling capability into MCNPX and its demonstration in first applications

F. X. Gallmeier, M. Wohlmuther, U. Filges, D. Kiselev, G. Muhrer

Neutronics Group

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

Reflection of thermal and cold neutrons by polished surfaces and so-called supermirrors effect radiation fields in and around neutron beamlines. To allow the prediction of these radiation fields with MCNPX 2.5.0, two new input cards were implemented for defining mirror properties of surfaces. Mirror properties can be linked to any type of surface, in contrast to other neutron optics codes, where the mirror properties are part of component descriptions, allowing the simulation of very complex neutron optical devices. First calculations are under way to verify the new capability against combinations of MCNPX and MCSTAS (neutron optics code) simulations. Also, simulations are under way to compare the predicted neutron beam characteristics against measurements conducted at Paul Scherrer Institut.

Original language	English
Pages (from-to)	768-772
Number of pages	5
Journal	Nuclear Technology
Volume	168
Issue number	3
DOIs	https://doi.org/10.13182/NT09-A9304
State	Published - Dec 2009

Keywords

Neutron guide
Neutron mirror
Neutron transport

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abstract = "Reflection of thermal and cold neutrons by polished surfaces and so-called supermirrors effect radiation fields in and around neutron beamlines. To allow the prediction of these radiation fields with MCNPX 2.5.0, two new input cards were implemented for defining mirror properties of surfaces. Mirror properties can be linked to any type of surface, in contrast to other neutron optics codes, where the mirror properties are part of component descriptions, allowing the simulation of very complex neutron optical devices. First calculations are under way to verify the new capability against combinations of MCNPX and MCSTAS (neutron optics code) simulations. Also, simulations are under way to compare the predicted neutron beam characteristics against measurements conducted at Paul Scherrer Institut.",

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AU - Gallmeier, F. X.

AU - Wohlmuther, M.

AU - Filges, U.

AU - Kiselev, D.

AU - Muhrer, G.

PY - 2009/12

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N2 - Reflection of thermal and cold neutrons by polished surfaces and so-called supermirrors effect radiation fields in and around neutron beamlines. To allow the prediction of these radiation fields with MCNPX 2.5.0, two new input cards were implemented for defining mirror properties of surfaces. Mirror properties can be linked to any type of surface, in contrast to other neutron optics codes, where the mirror properties are part of component descriptions, allowing the simulation of very complex neutron optical devices. First calculations are under way to verify the new capability against combinations of MCNPX and MCSTAS (neutron optics code) simulations. Also, simulations are under way to compare the predicted neutron beam characteristics against measurements conducted at Paul Scherrer Institut.

AB - Reflection of thermal and cold neutrons by polished surfaces and so-called supermirrors effect radiation fields in and around neutron beamlines. To allow the prediction of these radiation fields with MCNPX 2.5.0, two new input cards were implemented for defining mirror properties of surfaces. Mirror properties can be linked to any type of surface, in contrast to other neutron optics codes, where the mirror properties are part of component descriptions, allowing the simulation of very complex neutron optical devices. First calculations are under way to verify the new capability against combinations of MCNPX and MCSTAS (neutron optics code) simulations. Also, simulations are under way to compare the predicted neutron beam characteristics against measurements conducted at Paul Scherrer Institut.

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KW - Neutron mirror

KW - Neutron transport

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Implementation of neutron mirror modeling capability into MCNPX and its demonstration in first applications

Abstract

Keywords

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