Wavelength frame multiplication for reflectometry at long-pulse neutron sources
(2020) In Review of Scientific Instruments 91(12).- 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... (More)
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.
(Less)
- author
- organization
- publishing date
- 2020
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Review of Scientific Instruments
- volume
- 91
- issue
- 12
- article number
- 125111
- pages
- 15 pages
- publisher
- American Institute of Physics (AIP)
- external identifiers
-
- scopus:85099208253
- pmid:33379978
- ISSN
- 0034-6748
- DOI
- 10.1063/5.0014207
- language
- English
- LU publication?
- yes
- id
- aac07889-6ad5-4757-963b-1000279bc332
- date added to LUP
- 2021-01-26 10:32:48
- date last changed
- 2024-04-04 00:06:15
@article{aac07889-6ad5-4757-963b-1000279bc332,
abstract = {{<p>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. </p>}},
author = {{Löhmann, Oliver and Silvi, Luca and Kadletz, Peter M. and Vaytet, Neil and Arnold, Owen and Jones, Matthew D. and Nilsson, Jonas and Hart, Michael and Richter, Tobias and Von Klitzing, Regine and Jackson, Andrew J. and Arnold, Thomas and Woracek, Robin}},
issn = {{0034-6748}},
language = {{eng}},
number = {{12}},
publisher = {{American Institute of Physics (AIP)}},
series = {{Review of Scientific Instruments}},
title = {{Wavelength frame multiplication for reflectometry at long-pulse neutron sources}},
url = {{http://dx.doi.org/10.1063/5.0014207}},
doi = {{10.1063/5.0014207}},
volume = {{91}},
year = {{2020}},
}