Investigations of the neutron performance of a methane hydrate moderator

Kay Nuenighoff; Chistoph Pohl; Virgini Bollini; Arek Bubak; Harald Conrad; Detlef Filges; Harald Glueckler; Frank Goldenbaum; Günther Hansen; Burkhard Lensing; Ralf Dieter Neef; Norbert Paul; Krzysztof Pysz; Hartwig Schaal; Helmut Soltner; Hermann Stelzer; Holger Tietze-Jaensch; Waldemar Ninaus; Michael Wohlmuther; Phillip Ferguson; Franz Gallmeier; Eric Iverson; Sergey Koulikov; Alexander Smirnov

doi:10.1016/j.nima.2006.02.010

Investigations of the neutron performance of a methane hydrate moderator

Kay Nuenighoff, Chistoph Pohl, Virgini Bollini, Arek Bubak, Harald Conrad, Detlef Filges, Harald Glueckler, Frank Goldenbaum, Günther Hansen, Burkhard Lensing, Ralf Dieter Neef, Norbert Paul, Krzysztof Pysz, Hartwig Schaal, Helmut Soltner, Hermann Stelzer, Holger Tietze-Jaensch, Waldemar Ninaus, Michael Wohlmuther, Phillip FergusonFranz Gallmeier, Eric Iverson, Sergey Koulikov, Alexander Smirnov

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1 Scopus citations

Abstract

The increasing interest of neutron scattering scientists in multi-spectral moderators motivated the search for reliable moderator materials fulfilling these requirements. One very elegant approach is methane hydrate as a moderator material, a material, where a methane molecule is encaged by six water molecules on average, leads to a combination of the neutron scattering properties of solid methane and ice. In this contribution the investigation of methane hydrate at T = 20 K and the analysis of the resulting spectra will be discussed. The second part of the paper deals with the observed differences between simulation and experiment in the cold energy range. It will be shown that the stainless steel beam and its possibility to reflect cold neutrons-a neutron optical effect not included in MCNPX-is responsible for the disagreement.

Original language	English
Pages (from-to)	565-568
Number of pages	4
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	562
Issue number	2
DOIs	https://doi.org/10.1016/j.nima.2006.02.010
State	Published - Jun 23 2006
Externally published	Yes

Keywords

Methane hydrate
Moderation of neutrons
Radiation transport
Spallation

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10.1016/j.nima.2006.02.010

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Nuenighoff, K., Pohl, C., Bollini, V., Bubak, A., Conrad, H., Filges, D., Glueckler, H., Goldenbaum, F., Hansen, G., Lensing, B., Neef, R. D., Paul, N., Pysz, K., Schaal, H., Soltner, H., Stelzer, H., Tietze-Jaensch, H., Ninaus, W., Wohlmuther, M., ... Smirnov, A. (2006). Investigations of the neutron performance of a methane hydrate moderator. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 562(2), 565-568. https://doi.org/10.1016/j.nima.2006.02.010

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abstract = "The increasing interest of neutron scattering scientists in multi-spectral moderators motivated the search for reliable moderator materials fulfilling these requirements. One very elegant approach is methane hydrate as a moderator material, a material, where a methane molecule is encaged by six water molecules on average, leads to a combination of the neutron scattering properties of solid methane and ice. In this contribution the investigation of methane hydrate at T = 20 K and the analysis of the resulting spectra will be discussed. The second part of the paper deals with the observed differences between simulation and experiment in the cold energy range. It will be shown that the stainless steel beam and its possibility to reflect cold neutrons-a neutron optical effect not included in MCNPX-is responsible for the disagreement.",

keywords = "Methane hydrate, Moderation of neutrons, Radiation transport, Spallation",

author = "Kay Nuenighoff and Chistoph Pohl and Virgini Bollini and Arek Bubak and Harald Conrad and Detlef Filges and Harald Glueckler and Frank Goldenbaum and G{\"u}nther Hansen and Burkhard Lensing and Neef, {Ralf Dieter} and Norbert Paul and Krzysztof Pysz and Hartwig Schaal and Helmut Soltner and Hermann Stelzer and Holger Tietze-Jaensch and Waldemar Ninaus and Michael Wohlmuther and Phillip Ferguson and Franz Gallmeier and Eric Iverson and Sergey Koulikov and Alexander Smirnov",

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doi = "10.1016/j.nima.2006.02.010",

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Nuenighoff, K, Pohl, C, Bollini, V, Bubak, A, Conrad, H, Filges, D, Glueckler, H, Goldenbaum, F, Hansen, G, Lensing, B, Neef, RD, Paul, N, Pysz, K, Schaal, H, Soltner, H, Stelzer, H, Tietze-Jaensch, H, Ninaus, W, Wohlmuther, M, Ferguson, P , Gallmeier, F , Iverson, E, Koulikov, S & Smirnov, A 2006, 'Investigations of the neutron performance of a methane hydrate moderator', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 562, no. 2, pp. 565-568. https://doi.org/10.1016/j.nima.2006.02.010

Investigations of the neutron performance of a methane hydrate moderator. / Nuenighoff, Kay; Pohl, Chistoph; Bollini, Virgini et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 562, No. 2, 23.06.2006, p. 565-568.

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

TY - JOUR

T1 - Investigations of the neutron performance of a methane hydrate moderator

AU - Nuenighoff, Kay

AU - Pohl, Chistoph

AU - Bollini, Virgini

AU - Bubak, Arek

AU - Conrad, Harald

AU - Filges, Detlef

AU - Glueckler, Harald

AU - Goldenbaum, Frank

AU - Hansen, Günther

AU - Lensing, Burkhard

AU - Neef, Ralf Dieter

AU - Paul, Norbert

AU - Pysz, Krzysztof

AU - Schaal, Hartwig

AU - Soltner, Helmut

AU - Stelzer, Hermann

AU - Tietze-Jaensch, Holger

AU - Ninaus, Waldemar

AU - Wohlmuther, Michael

AU - Ferguson, Phillip

AU - Gallmeier, Franz

AU - Iverson, Eric

AU - Koulikov, Sergey

AU - Smirnov, Alexander

PY - 2006/6/23

Y1 - 2006/6/23

N2 - The increasing interest of neutron scattering scientists in multi-spectral moderators motivated the search for reliable moderator materials fulfilling these requirements. One very elegant approach is methane hydrate as a moderator material, a material, where a methane molecule is encaged by six water molecules on average, leads to a combination of the neutron scattering properties of solid methane and ice. In this contribution the investigation of methane hydrate at T = 20 K and the analysis of the resulting spectra will be discussed. The second part of the paper deals with the observed differences between simulation and experiment in the cold energy range. It will be shown that the stainless steel beam and its possibility to reflect cold neutrons-a neutron optical effect not included in MCNPX-is responsible for the disagreement.

AB - The increasing interest of neutron scattering scientists in multi-spectral moderators motivated the search for reliable moderator materials fulfilling these requirements. One very elegant approach is methane hydrate as a moderator material, a material, where a methane molecule is encaged by six water molecules on average, leads to a combination of the neutron scattering properties of solid methane and ice. In this contribution the investigation of methane hydrate at T = 20 K and the analysis of the resulting spectra will be discussed. The second part of the paper deals with the observed differences between simulation and experiment in the cold energy range. It will be shown that the stainless steel beam and its possibility to reflect cold neutrons-a neutron optical effect not included in MCNPX-is responsible for the disagreement.

KW - Methane hydrate

KW - Moderation of neutrons

KW - Radiation transport

KW - Spallation

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DO - 10.1016/j.nima.2006.02.010

M3 - Article

AN - SCOPUS:33744793759

SN - 0168-9002

VL - 562

SP - 565

EP - 568

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

IS - 2

ER -

Investigations of the neutron performance of a methane hydrate moderator

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Keywords

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