TOSCA neutron spectrometer: The final configuration

Colognesi, D. and Celli, M. and Cilloco, F. and Newport, Robert J. and Parker, S.R. and Rossi-Albertini, V. and Sacchetti, F. and Tomkinson, John and Zoppi, M. (2002) TOSCA neutron spectrometer: The final configuration. Applied Physics A: Materials Science & Processing, 74 . S64-S66. ISSN 0947-8396. (Full text available)

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The forward and backward scattering parts (phase 11) of the new neutron spectrometer, TOSCA, replacing the old TFXA and TOSCA (phase 1), have been successfully installed at the ISIS pulsed neutron source. The results show a significant enhancement in the counting rate due to the larger detector area. The improved resolution (to 1.5%-3% of the energy transfer) as compared with the previous instruments (TXFA: 2.5%-3.5%; TOSCA-I: 2%-3.5%) has been achieved by increasing the primary flight path from 12 m to 17 m. A chopper has been added in order to avoid neutron frame overlap and to reduce the fast neutron background. Additional diffraction capability will be installed in the near future. An example of the high resolution that is routinely available is provided by the spectrum of potassium hydrogen phtalate at 20 K.

Item Type: Article
Subjects: Q Science
Q Science > QC Physics
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences > Functional Materials Group
Depositing User: Bob Newport
Date Deposited: 26 Jun 2008 17:21
Last Modified: 18 Jul 2014 10:27
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