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SANS I

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Instrument Description

The small angle neutron instrument SANS covers the Q-range from 6 x 10-3 nm-1 to 5.4 nm-1 and for the detector displaced laterally by 50 cm up to 10.5 nm-1.This allows the investigation of structures ranging from about 1 to 400 nm. The instrument is installed at the curved neutron guide "1RNR16".

The incoming neutrons are monochromized by a mechanical velocity selector and collimated on a variable length from 1 to 18 m. The two-dimensional ³He-detector with 128 x 128 elements of 7.5 x 7.5 mm² can be positioned at any distance between 1.4 and 20 m from the sample. Additionally it can be displaced laterally by 50 cm inside the large vacuum vessel to increase the accessible Q-range at any detector position. This option is combined with a rotation around its vertical axes to reduce parallaxes effects. The memory card can store 1024 frames of 16k detector elements to allow time resolved measurements. The sample support consist of a remotely controlled xyz and rotation table for mounting devices for working in air (e.g. sample changer, high pressure cell, ...) and a vacuum chamber (able to carry an electromagnet)


The main components of the SINQ small angle scattering facility
The main components of the SINQ small angle scattering facility
Intensity at sample position for the proposed 1 mA proton current of the spallation source.
Intensity at sample position for the proposed 1 mA proton current of the spallation source.
Schematic view of the small angle spectrometer.
Schematic view of the small angle spectrometer.

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Next submission deadline:
15 November 2023

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