NJOY+NCrystal: An open-source tool for creating thermal neutron scattering libraries with mixed elastic support

Kemal Ramić; Jose Ignacio Marquez Damian; Thomas Kittelmann; Douglas D. Di Julio; Davide Campi; Marco Bernasconi; Giuseppe Gorini; Valentina Santoro

doi:10.1016/j.nima.2021.166227

NJOY+NCrystal: An open-source tool for creating thermal neutron scattering libraries with mixed elastic support

Kemal Ramić, Jose Ignacio Marquez Damian, Thomas Kittelmann, Douglas D. Di Julio, Davide Campi, Marco Bernasconi, Giuseppe Gorini, Valentina Santoro

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

15 Scopus citations

Abstract

In this work we present NJOY+NCrystal, a tool to generate thermal neutron scattering libraries with support for coherent and incoherent elastic components for crystalline solid materials. This tool, which is a customized version of NJOY, was created by modifying the nuclear data processing program NJOY to call the thermal scattering software library NCrystal, and includes a proposed change in the ENDF-6 format to store both the coherent and incoherent elastic components. Necessary changes to enable this format in NJOY, as well as to sample it in the OpenMC Monte Carlo code, are detailed here. Examples of materials that are coherent–dominant, incoherent–dominant, and mixed elastic scatterers are presented, as well as the creation of novel libraries for MgH₂ and MgD₂, that are under consideration as advanced neutron reflectors in the HighNESS project at the European Spallation Source. NJOY+NCrystal greatly simplifies the process to generate thermal scattering libraries (TSL) and this is exemplified with 213 new and updated TSL evaluations.

Original language	English
Article number	166227
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	1027
DOIs	https://doi.org/10.1016/j.nima.2021.166227
State	Published - Mar 11 2022
Externally published	Yes

Funding

This work was funded by the HighNESS project at the European Spallation Source. HighNESS is funded by the European Framework for Research and Innovation Horizon 2020 , under grant agreement 951782 .

Keywords

Coherent elastic
ENDF, nuclear data
Incoherent elastic
Mixed elastic
Thermal neutron scattering libraries
Total cross section

Access to Document

10.1016/j.nima.2021.166227

Cite this

Ramić, K., Marquez Damian, J. I., Kittelmann, T., Di Julio, D. D., Campi, D., Bernasconi, M., Gorini, G., & Santoro, V. (2022). NJOY+NCrystal: An open-source tool for creating thermal neutron scattering libraries with mixed elastic support. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1027, Article 166227. https://doi.org/10.1016/j.nima.2021.166227

@article{fa7fbd996c5742cb861d63743cc20b20,

title = "NJOY+NCrystal: An open-source tool for creating thermal neutron scattering libraries with mixed elastic support",

abstract = "In this work we present NJOY+NCrystal, a tool to generate thermal neutron scattering libraries with support for coherent and incoherent elastic components for crystalline solid materials. This tool, which is a customized version of NJOY, was created by modifying the nuclear data processing program NJOY to call the thermal scattering software library NCrystal, and includes a proposed change in the ENDF-6 format to store both the coherent and incoherent elastic components. Necessary changes to enable this format in NJOY, as well as to sample it in the OpenMC Monte Carlo code, are detailed here. Examples of materials that are coherent–dominant, incoherent–dominant, and mixed elastic scatterers are presented, as well as the creation of novel libraries for MgH2 and MgD2, that are under consideration as advanced neutron reflectors in the HighNESS project at the European Spallation Source. NJOY+NCrystal greatly simplifies the process to generate thermal scattering libraries (TSL) and this is exemplified with 213 new and updated TSL evaluations.",

keywords = "Coherent elastic, ENDF, nuclear data, Incoherent elastic, Mixed elastic, Thermal neutron scattering libraries, Total cross section",

author = "Kemal Rami{\'c} and {Marquez Damian}, {Jose Ignacio} and Thomas Kittelmann and {Di Julio}, {Douglas D.} and Davide Campi and Marco Bernasconi and Giuseppe Gorini and Valentina Santoro",

note = "Publisher Copyright: {\textcopyright} 2021 The Author(s)",

year = "2022",

month = mar,

day = "11",

doi = "10.1016/j.nima.2021.166227",

language = "English",

volume = "1027",

journal = "Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",

issn = "0168-9002",

publisher = "Elsevier",

}

Ramić, K, Marquez Damian, JI, Kittelmann, T, Di Julio, DD, Campi, D, Bernasconi, M, Gorini, G & Santoro, V 2022, 'NJOY+NCrystal: An open-source tool for creating thermal neutron scattering libraries with mixed elastic support', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 1027, 166227. https://doi.org/10.1016/j.nima.2021.166227

NJOY+NCrystal: An open-source tool for creating thermal neutron scattering libraries with mixed elastic support. / Ramić, Kemal; Marquez Damian, Jose Ignacio; Kittelmann, Thomas et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 1027, 166227, 11.03.2022.

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

TY - JOUR

T1 - NJOY+NCrystal

T2 - An open-source tool for creating thermal neutron scattering libraries with mixed elastic support

AU - Ramić, Kemal

AU - Marquez Damian, Jose Ignacio

AU - Kittelmann, Thomas

AU - Di Julio, Douglas D.

AU - Campi, Davide

AU - Bernasconi, Marco

AU - Gorini, Giuseppe

AU - Santoro, Valentina

PY - 2022/3/11

Y1 - 2022/3/11

N2 - In this work we present NJOY+NCrystal, a tool to generate thermal neutron scattering libraries with support for coherent and incoherent elastic components for crystalline solid materials. This tool, which is a customized version of NJOY, was created by modifying the nuclear data processing program NJOY to call the thermal scattering software library NCrystal, and includes a proposed change in the ENDF-6 format to store both the coherent and incoherent elastic components. Necessary changes to enable this format in NJOY, as well as to sample it in the OpenMC Monte Carlo code, are detailed here. Examples of materials that are coherent–dominant, incoherent–dominant, and mixed elastic scatterers are presented, as well as the creation of novel libraries for MgH2 and MgD2, that are under consideration as advanced neutron reflectors in the HighNESS project at the European Spallation Source. NJOY+NCrystal greatly simplifies the process to generate thermal scattering libraries (TSL) and this is exemplified with 213 new and updated TSL evaluations.

AB - In this work we present NJOY+NCrystal, a tool to generate thermal neutron scattering libraries with support for coherent and incoherent elastic components for crystalline solid materials. This tool, which is a customized version of NJOY, was created by modifying the nuclear data processing program NJOY to call the thermal scattering software library NCrystal, and includes a proposed change in the ENDF-6 format to store both the coherent and incoherent elastic components. Necessary changes to enable this format in NJOY, as well as to sample it in the OpenMC Monte Carlo code, are detailed here. Examples of materials that are coherent–dominant, incoherent–dominant, and mixed elastic scatterers are presented, as well as the creation of novel libraries for MgH2 and MgD2, that are under consideration as advanced neutron reflectors in the HighNESS project at the European Spallation Source. NJOY+NCrystal greatly simplifies the process to generate thermal scattering libraries (TSL) and this is exemplified with 213 new and updated TSL evaluations.

KW - Coherent elastic

KW - ENDF, nuclear data

KW - Incoherent elastic

KW - Mixed elastic

KW - Thermal neutron scattering libraries

KW - Total cross section

UR - http://www.scopus.com/inward/record.url?scp=85122835483&partnerID=8YFLogxK

U2 - 10.1016/j.nima.2021.166227

DO - 10.1016/j.nima.2021.166227

M3 - Article

AN - SCOPUS:85122835483

SN - 0168-9002

VL - 1027

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

M1 - 166227

ER -

Ramić K, Marquez Damian JI, Kittelmann T, Di Julio DD, Campi D, Bernasconi M et al. NJOY+NCrystal: An open-source tool for creating thermal neutron scattering libraries with mixed elastic support. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2022 Mar 11;1027:166227. doi: 10.1016/j.nima.2021.166227

NJOY+NCrystal: An open-source tool for creating thermal neutron scattering libraries with mixed elastic support

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this