SANS 3



The reflectometer PNR is located at the end of NG-2u at beamline 8 and is supplied with cold neutrons. A neutron velocity selector allows to select the neutron wavelength with a resolution of 5%(fig.1).

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Fig.1: The Reflectometer for polarised neutrons (PNR)

Optionally, experiments at PNR can be carried out with both polarised and non-polarised neutrons. Currently a set of reflecting supermirrors is used as a polariser.

In the subsequent neutron-optical system the neutrons are guided directly to the sample. A variable slit system collimates the neutron beam. At the sample stage, a linear and turning table are provided on which any kind of sample holder can be mounted.

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For experiments with polarised neutrons spin analysis can be carried out using an analyser positioned in front of the detector. Two HF-flippers, located in front of and behind the sample, allow spin reversal. A 2-dimensional position-sensitive 3He-area-detector is available.




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