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VESPA : The vibrational spectrometer for the European Spallation Source

Fedrigo, Anna; Colognesi, Daniele; Bertelsen, Mads; Hartl, Monika LU ; Lefmann, Kim LU ; Deen, Pascale P. LU ; Strobl, Markus LU ; Grazzi, Francesco and Zoppi, Marco (2016) In Review of Scientific Instruments 87(6).
Abstract

VESPA, Vibrational Excitation Spectrometer with Pyrolytic-graphite Analysers, aims to probe molecular excitations via inelastic neutron scattering. It is a thermal high resolution inverted geometry time-of-flight instrument designed to maximise the use of the long pulse of the European Spallation Source. The wavelength frame multiplication technique was applied to provide simultaneously a broad dynamic range (about 0-500 meV) while a system of optical blind choppers allows to trade flux for energy resolution. Thanks to its high flux, VESPA will allow the investigation of dynamical and in situ experiments in physical chemistry. Here we describe the design parameters and the corresponding McStas simulations.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Review of Scientific Instruments
volume
87
issue
6
publisher
American Institute of Physics
external identifiers
  • scopus:84973532254
  • wos:000379177000075
ISSN
0034-6748
DOI
10.1063/1.4952430
language
English
LU publication?
yes
id
00483bd0-b9bf-426e-af65-27f92650c2ba
date added to LUP
2017-01-26 09:33:27
date last changed
2017-09-18 11:34:11
@article{00483bd0-b9bf-426e-af65-27f92650c2ba,
  abstract     = {<p>VESPA, Vibrational Excitation Spectrometer with Pyrolytic-graphite Analysers, aims to probe molecular excitations via inelastic neutron scattering. It is a thermal high resolution inverted geometry time-of-flight instrument designed to maximise the use of the long pulse of the European Spallation Source. The wavelength frame multiplication technique was applied to provide simultaneously a broad dynamic range (about 0-500 meV) while a system of optical blind choppers allows to trade flux for energy resolution. Thanks to its high flux, VESPA will allow the investigation of dynamical and in situ experiments in physical chemistry. Here we describe the design parameters and the corresponding McStas simulations.</p>},
  articleno    = {065101},
  author       = {Fedrigo, Anna and Colognesi, Daniele and Bertelsen, Mads and Hartl, Monika and Lefmann, Kim and Deen, Pascale P. and Strobl, Markus and Grazzi, Francesco and Zoppi, Marco},
  issn         = {0034-6748},
  language     = {eng},
  month        = {06},
  number       = {6},
  publisher    = {American Institute of Physics},
  series       = {Review of Scientific Instruments},
  title        = {VESPA : The vibrational spectrometer for the European Spallation Source},
  url          = {http://dx.doi.org/10.1063/1.4952430},
  volume       = {87},
  year         = {2016},
}