Wavelength frame multiplication for reflectometry at long-pulse neutron sources

Oliver Lohmann; Luca Silvi; Peter M. Kadletz; Neil Vaytet; Owen Arnold; Matthew D. Jones; Jonas Nilsson; Michael Hart; Tobias Richter; Regine Von Klitzing; Andrew J. Jackson; Thomas Arnold; Robin Woracek

doi:10.1063/5.0014207

Wavelength frame multiplication for reflectometry at long-pulse neutron sources

Oliver Lohmann, Luca Silvi, Peter M. Kadletz, Neil Vaytet, Owen Arnold, Matthew D. Jones, Jonas Nilsson, Michael Hart, Tobias Richter, Regine Von Klitzing, Andrew J. Jackson, Thomas Arnold, Robin Woracek

Department of Chemistry

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

3 Citations (SciVal)

Abstract

The European Spallation Source (ESS), which is under construction in Lund (Sweden), will be the next leading neutron facility with an unprecedented brilliance and novel long-pulse time structure. A long-pulse source not only provides a high time-average flux but also opens the possibility to tune the resolution by using pulse shaping choppers. Thus, an instrument can readily be operated in either a high flux or a high resolution mode. Several of the shorter instruments at the ESS will employ Wavelength Frame Multiplication (WFM) in order to enable a sufficient resolution while offering a continuous and broad wavelength range. A test beamline was operated until the end of 2019 at the research reactor in Berlin to test components and methods, including WFM, in order to prepare the new facility for the operation of neutron instruments and successful first science. We herein demonstrate the implementation of WFM for reflectometry. By selecting a short pulse mode under the same geometrical configuration, we compare and discuss the results for two reference samples. The reported experiments not only serve to prove the reliability of the WFM approach but also, for the first time, demonstrate the full instrument control, data acquisition and data reduction chain that will be implemented at the ESS.

Original language	English
Article number	125111
Journal	Review of Scientific Instruments
Volume	91
Issue number	12
Early online date	21 Dec 2020
DOIs	https://doi.org/10.1063/5.0014207
Publication status	Published - 31 Dec 2020

Bibliographical note

Funding Information:
We thank Helmholtz-Zentrum Berlin für Materialien und Energie for hosting the test beamline and providing neutrons. We would particularly like to thank Klaus Habicht for his support in hosting the test beamline. We warmly thank Heike Gast, Thomas Wilpert, Lutz Rossa, Konstantin Quoll, and Robby Kischnik for their outstanding support in several aspects at Helmholtz-Zentrum Berlin. V14 data were measured by Thomas Krist, and we would like to thank him for providing these data. We would also like to acknowledge Markus Strobl for initiating to operate the test beamline in order to conduct dedicated testing of various WFM modes, including reflectometry. Furthermore, we thank the divisions DMSC, ICS and MCAG of the ESS for the successful collaboration and in particular like to acknowledge contributions to NICOS by Michael Wedel, Michele Brambilla and Matt Clarke, support of the timing System and EPICS by Nicklas Holmberg and Douglas Bezerra Beniz, support of motion control by Torsten Bögershausen and Paul Barron, as well as streaming support by Afonso Mukai. Financial support was granted by BMBF via Verbundprojekt (Grant No. 05K2016).

ASJC Scopus subject areas

Instrumentation

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10.1063/5.0014207Licence: CC BY

Cite this

@article{ed6b99a99d51404cbd7888accbd6d873,

title = "Wavelength frame multiplication for reflectometry at long-pulse neutron sources",

abstract = "The European Spallation Source (ESS), which is under construction in Lund (Sweden), will be the next leading neutron facility with an unprecedented brilliance and novel long-pulse time structure. A long-pulse source not only provides a high time-average flux but also opens the possibility to tune the resolution by using pulse shaping choppers. Thus, an instrument can readily be operated in either a high flux or a high resolution mode. Several of the shorter instruments at the ESS will employ Wavelength Frame Multiplication (WFM) in order to enable a sufficient resolution while offering a continuous and broad wavelength range. A test beamline was operated until the end of 2019 at the research reactor in Berlin to test components and methods, including WFM, in order to prepare the new facility for the operation of neutron instruments and successful first science. We herein demonstrate the implementation of WFM for reflectometry. By selecting a short pulse mode under the same geometrical configuration, we compare and discuss the results for two reference samples. The reported experiments not only serve to prove the reliability of the WFM approach but also, for the first time, demonstrate the full instrument control, data acquisition and data reduction chain that will be implemented at the ESS. ",

author = "Oliver Lohmann and Luca Silvi and Kadletz, {Peter M.} and Neil Vaytet and Owen Arnold and Jones, {Matthew D.} and Jonas Nilsson and Michael Hart and Tobias Richter and {Von Klitzing}, Regine and Jackson, {Andrew J.} and Thomas Arnold and Robin Woracek",

note = "Funding Information: We thank Helmholtz-Zentrum Berlin f{\"u}r Materialien und Energie for hosting the test beamline and providing neutrons. We would particularly like to thank Klaus Habicht for his support in hosting the test beamline. We warmly thank Heike Gast, Thomas Wilpert, Lutz Rossa, Konstantin Quoll, and Robby Kischnik for their outstanding support in several aspects at Helmholtz-Zentrum Berlin. V14 data were measured by Thomas Krist, and we would like to thank him for providing these data. We would also like to acknowledge Markus Strobl for initiating to operate the test beamline in order to conduct dedicated testing of various WFM modes, including reflectometry. Furthermore, we thank the divisions DMSC, ICS and MCAG of the ESS for the successful collaboration and in particular like to acknowledge contributions to NICOS by Michael Wedel, Michele Brambilla and Matt Clarke, support of the timing System and EPICS by Nicklas Holmberg and Douglas Bezerra Beniz, support of motion control by Torsten B{\"o}gershausen and Paul Barron, as well as streaming support by Afonso Mukai. Financial support was granted by BMBF via Verbundprojekt (Grant No. 05K2016). ",

year = "2020",

month = dec,

day = "31",

doi = "10.1063/5.0014207",

language = "English",

volume = "91",

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T1 - Wavelength frame multiplication for reflectometry at long-pulse neutron sources

AU - Lohmann, Oliver

AU - Silvi, Luca

AU - Kadletz, Peter M.

AU - Vaytet, Neil

AU - Arnold, Owen

AU - Jones, Matthew D.

AU - Nilsson, Jonas

AU - Hart, Michael

AU - Richter, Tobias

AU - Von Klitzing, Regine

AU - Jackson, Andrew J.

AU - Arnold, Thomas

AU - Woracek, Robin

N1 - Funding Information: We thank Helmholtz-Zentrum Berlin für Materialien und Energie for hosting the test beamline and providing neutrons. We would particularly like to thank Klaus Habicht for his support in hosting the test beamline. We warmly thank Heike Gast, Thomas Wilpert, Lutz Rossa, Konstantin Quoll, and Robby Kischnik for their outstanding support in several aspects at Helmholtz-Zentrum Berlin. V14 data were measured by Thomas Krist, and we would like to thank him for providing these data. We would also like to acknowledge Markus Strobl for initiating to operate the test beamline in order to conduct dedicated testing of various WFM modes, including reflectometry. Furthermore, we thank the divisions DMSC, ICS and MCAG of the ESS for the successful collaboration and in particular like to acknowledge contributions to NICOS by Michael Wedel, Michele Brambilla and Matt Clarke, support of the timing System and EPICS by Nicklas Holmberg and Douglas Bezerra Beniz, support of motion control by Torsten Bögershausen and Paul Barron, as well as streaming support by Afonso Mukai. Financial support was granted by BMBF via Verbundprojekt (Grant No. 05K2016).

PY - 2020/12/31

Y1 - 2020/12/31

N2 - The European Spallation Source (ESS), which is under construction in Lund (Sweden), will be the next leading neutron facility with an unprecedented brilliance and novel long-pulse time structure. A long-pulse source not only provides a high time-average flux but also opens the possibility to tune the resolution by using pulse shaping choppers. Thus, an instrument can readily be operated in either a high flux or a high resolution mode. Several of the shorter instruments at the ESS will employ Wavelength Frame Multiplication (WFM) in order to enable a sufficient resolution while offering a continuous and broad wavelength range. A test beamline was operated until the end of 2019 at the research reactor in Berlin to test components and methods, including WFM, in order to prepare the new facility for the operation of neutron instruments and successful first science. We herein demonstrate the implementation of WFM for reflectometry. By selecting a short pulse mode under the same geometrical configuration, we compare and discuss the results for two reference samples. The reported experiments not only serve to prove the reliability of the WFM approach but also, for the first time, demonstrate the full instrument control, data acquisition and data reduction chain that will be implemented at the ESS.

AB - The European Spallation Source (ESS), which is under construction in Lund (Sweden), will be the next leading neutron facility with an unprecedented brilliance and novel long-pulse time structure. A long-pulse source not only provides a high time-average flux but also opens the possibility to tune the resolution by using pulse shaping choppers. Thus, an instrument can readily be operated in either a high flux or a high resolution mode. Several of the shorter instruments at the ESS will employ Wavelength Frame Multiplication (WFM) in order to enable a sufficient resolution while offering a continuous and broad wavelength range. A test beamline was operated until the end of 2019 at the research reactor in Berlin to test components and methods, including WFM, in order to prepare the new facility for the operation of neutron instruments and successful first science. We herein demonstrate the implementation of WFM for reflectometry. By selecting a short pulse mode under the same geometrical configuration, we compare and discuss the results for two reference samples. The reported experiments not only serve to prove the reliability of the WFM approach but also, for the first time, demonstrate the full instrument control, data acquisition and data reduction chain that will be implemented at the ESS.

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ER -

Wavelength frame multiplication for reflectometry at long-pulse neutron sources

Abstract

Bibliographical note

ASJC Scopus subject areas

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