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Wavelength frame multiplication for reflectometry at long-pulse neutron sources

Löhmann, Oliver ; Silvi, Luca ; Kadletz, Peter M. ; Vaytet, Neil ; Arnold, Owen ; Jones, Matthew D. ; Nilsson, Jonas ; Hart, Michael ; Richter, Tobias ; Klitzing, Regine von ; Jackson, Andrew J. ; Arnold, Thomas ; Woracek, Robin (2024)
Wavelength frame multiplication for reflectometry at long-pulse neutron sources.
In: Review of Scientific Instruments, 2020, 91 (12)
doi: 10.26083/tuprints-00026653
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Wavelength frame multiplication for reflectometry at long-pulse neutron sources
Language: English
Date: 18 March 2024
Place of Publication: Darmstadt
Year of primary publication: 2020
Place of primary publication: Melville, NY
Publisher: AIP Publishing
Journal or Publication Title: Review of Scientific Instruments
Volume of the journal: 91
Issue Number: 12
Collation: 14 Seiten
DOI: 10.26083/tuprints-00026653
Corresponding Links:
Origin: Secondary publication service

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.

Identification Number: Artikel-ID: 125111
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-266535
Classification DDC: 500 Science and mathematics > 530 Physics
600 Technology, medicine, applied sciences > 660 Chemical engineering
Divisions: 05 Department of Physics > Institute for Condensed Matter Physics
Date Deposited: 18 Mar 2024 10:50
Last Modified: 15 Apr 2024 10:16
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/26653
PPN: 517137909
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