SPHERES, Jülichs high-flux neutron backscattering spectrometer at FRM II

Wuttke, J.; Schneider, G.J.; Richter, D.; Schneider, H.; Staringer, S.; Prager, M.; Kleines, H.; Ossovyi, V.; Drochner, M.; Budwig, A.; Pardo, L.C.; Kayser, F.-J.; Kämmerling, H.

doi:10.1063/1.4732806

Journal Article

SPHERES, Jülichs high-flux neutron backscattering spectrometer at FRM II

Wuttke, J.FZJ* ; Budwig, A.FZJ* ; Drochner, M.FZJ* ; Kämmerling, H.FZJ* ; Kayser, F.-J.FZJ* ; Kleines, H.FZJ* ; Ossovyi, V.FZJ* ; Pardo, L. C.FZJ* ; Prager, M.FZJ* ; Richter, D.FZJ* ; Schneider, G. J.FZJ* ; Schneider, H.FZJ* ; Staringer, S.FZJ*

2012
American Institute of Physics [S.l.]

Review of scientific instruments 83, 075109 (2012) [10.1063/1.4732806]

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Please use a persistent id in citations: http://hdl.handle.net/2128/7564 doi:10.1063/1.4732806

Abstract: SPHERES is a third-generation neutron backscattering spectrometer, located at the 20 MW German neutron source FRM II and operated by the Jülich Centre for Neutron Science. It offers an energy resolution (fwhm) better than 0.65 μeV, a dynamic range of ± 31 μeV, and a signal-to-noise ratio of up to 1750:1.

Keyword(s): Instrument and Method Development (1st) ; Others (1st) ; Instrument and Method Development (2nd) ; J

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Note: Building and commissioning SPHERES has been funded by the German Bundesministerium fur Bildung und Forschung (Project Nos. 05NX8CJ1 and 03RI16JU1). Foundations for SPHERES were laid by former project scientists Oliver Kirstein and Peter Rottlander, and by former project engineer Tadeusz Kozielewski. Many other colleagues from the Forschungszentrum Julich contributed to this project. We would like to acknowledge Ulrich Probst, Helga Straatmann, and Thomas Koppitz for the development of the chopper rotor, Ulrich Giesen and Ulrich Pabst for a vibrational analysis thereof, Christoph Tiemann for his contribution to the Doppler drive, Gerd Schaffrath for the instrument housing, Manfred Bednarek for the electrical installations, Peter Stronciwilk and Marco Godel for mechanical constructions, Vu Thanh Nguyen for the accurate gluing of the silicon crystals, Harald Kusche, Andreas Nebel, and Bjorn Poschen for technical support, and Alexander Ioffe for coordinating the JCNS outstation at FRM II. Sergej Manoshin and Alexander Ioffe contributed a simulation of the convergent neutron guide. Michaela Zamponi, the new instrument responsible since fall 2011, contributed to the last Au activation measurement.

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