This title appears in the Scientific Report :
2017
Please use the identifier:
http://hdl.handle.net/2128/13761 in citations.
Please use the identifier: http://dx.doi.org/10.1088/1742-6596/746/1/012018 in citations.
Compact chopper spectrometers for pulsed sources
Compact chopper spectrometers for pulsed sources
We report on the opportunities for direct geometry chopper spectrometers (DGCS) by polychromatic illumination of the sample. At pulsed sources the use of multiple initial neutron energies appears naturally, if the repetition rate of chopper in front of the sample is larger than the repetition rate o...
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Personal Name(s): | Voigt, Jörg (Corresponding author) |
---|---|
Violini, Nicolo / Schweika, Werner | |
Contributing Institute: |
JCNS-FRM-II; JCNS-FRM-II Neutronenstreuung; JCNS-1 JARA-FIT; JARA-FIT Streumethoden; PGI-4 Streumethoden; JCNS-2 |
Published in: | Journal of physics / Conference Series, 746 (2016) S. 012018 |
Imprint: |
Bristol
IOP Publ.
2016
|
Physical Description: |
012018 |
DOI: |
10.1088/1742-6596/746/1/012018 |
Conference: | VI European Conference on Neutron Scattering, Zaragossa (Spain), 2015-08-30 - 2015-09-04 |
Document Type: |
Contribution to a book Contribution to a conference proceedings Journal Article |
Research Program: |
Materials and Processes for Energy and Transport Technologies Quantum Condensed Matter: Magnetism, Superconductivity Controlling Collective States Controlling Collective States Jülich Centre for Neutron Research (JCNS) |
Series Title: |
Journal of physics / Conference Series
746 |
Subject (ZB): | |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1088/1742-6596/746/1/012018 in citations.
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520 | |a We report on the opportunities for direct geometry chopper spectrometers (DGCS) by polychromatic illumination of the sample. At pulsed sources the use of multiple initial neutron energies appears naturally, if the repetition rate of chopper in front of the sample is larger than the repetition rate of the source. As a consequence, a large part of the spectrum is measured redundantly with variable energy and momentum transfer resolution. This can be used to optimize a chopper instrument for deep inelastic scattering, relaxing the requirements on the pulse length, by which the sample is illuminated, and on the secondary flight path, while the width of the spectral distribution must be narrowed down. This can open the path to new types of compact direct geometry chopper spectrometers, which need comparably small areas of detector coverage and allow very high repetition rates to provide a high intensity even if sample size and divergence distributions are limited. | ||
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