Developing an interface between MCNP and McStas for simulation of neutron moderators

Esben Bryndt Klinkby; Bent Lauritzen; Erik Nonbøl; Peter Kjær Willendrup

Developing an interface between MCNP and McStas for simulation of neutron moderators

Esben Bryndt Klinkby, Bent Lauritzen, Erik Nonbøl, Peter Kjær Willendrup

Department of Physics

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Abstract

Simulations of target-moderator-reflector system at spallation sources are conventionally
carried out using MCNP/X whereas simulations of neutron transport and instrument
performance are carried out by neutron ray tracing codes such as McStas. The coupling
between the two simulations suites typically consists of providing analytical fits from
MCNP/X neutron spectra to McStas. This method is generally successful, but as
will be discussed in the this paper, there are limitations and a more direct coupling
between MCNP/X andMcStas could allow for more accurate simulations of e.g. complex
moderator geometries, interference between beamlines as well as shielding requirements
along the neutron guides. In this paper different possible interfaces between McStas
and MCNP/X are discussed and first preliminary performance results are shown.

Original language	English
Title of host publication	Proceedings
Number of pages	6
Publication date	2012
Publication status	Published - 2012
Event	ICANS XX: International Collaboration on Advanced Neutron Sources - Bariloche, Argentina Duration: 4 Mar 2012 → 9 Mar 2012

Conference

Conference	ICANS XX
Country/Territory	Argentina
City	Bariloche
Period	04/03/2012 → 09/03/2012

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title = "Developing an interface between MCNP and McStas for simulation of neutron moderators",

abstract = "Simulations of target-moderator-reflector system at spallation sources are conventionally carried out using MCNP/X whereas simulations of neutron transport and instrument performance are carried out by neutron ray tracing codes such as McStas. The coupling between the two simulations suites typically consists of providing analytical fits from MCNP/X neutron spectra to McStas. This method is generally successful, but as will be discussed in the this paper, there are limitations and a more direct coupling between MCNP/X andMcStas could allow for more accurate simulations of e.g. complex moderator geometries, interference between beamlines as well as shielding requirements along the neutron guides. In this paper different possible interfaces between McStas and MCNP/X are discussed and first preliminary performance results are shown.",

author = "Klinkby, \{Esben Bryndt\} and Bent Lauritzen and Erik Nonb{\o}l and Willendrup, \{Peter Kj{\ae}r\}",

year = "2012",

language = "English",

booktitle = "Proceedings",

note = "ICANS XX : International Collaboration on Advanced Neutron Sources ; Conference date: 04-03-2012 Through 09-03-2012",

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TY - GEN

T1 - Developing an interface between MCNP and McStas for simulation of neutron moderators

AU - Klinkby, Esben Bryndt

AU - Lauritzen, Bent

AU - Nonbøl, Erik

AU - Willendrup, Peter Kjær

PY - 2012

Y1 - 2012

N2 - Simulations of target-moderator-reflector system at spallation sources are conventionally carried out using MCNP/X whereas simulations of neutron transport and instrument performance are carried out by neutron ray tracing codes such as McStas. The coupling between the two simulations suites typically consists of providing analytical fits from MCNP/X neutron spectra to McStas. This method is generally successful, but as will be discussed in the this paper, there are limitations and a more direct coupling between MCNP/X andMcStas could allow for more accurate simulations of e.g. complex moderator geometries, interference between beamlines as well as shielding requirements along the neutron guides. In this paper different possible interfaces between McStas and MCNP/X are discussed and first preliminary performance results are shown.

AB - Simulations of target-moderator-reflector system at spallation sources are conventionally carried out using MCNP/X whereas simulations of neutron transport and instrument performance are carried out by neutron ray tracing codes such as McStas. The coupling between the two simulations suites typically consists of providing analytical fits from MCNP/X neutron spectra to McStas. This method is generally successful, but as will be discussed in the this paper, there are limitations and a more direct coupling between MCNP/X andMcStas could allow for more accurate simulations of e.g. complex moderator geometries, interference between beamlines as well as shielding requirements along the neutron guides. In this paper different possible interfaces between McStas and MCNP/X are discussed and first preliminary performance results are shown.

M3 - Article in proceedings

BT - Proceedings

T2 - ICANS XX

Y2 - 4 March 2012 through 9 March 2012

ER -

Developing an interface between MCNP and McStas for simulation of neutron moderators

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