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Figure 1
Schematic layout of a neutron imaging beamline. The depicted components are key to defining the input parameters of the Monte Carlo model. Neutrons travel from the moderator surface (M1 ×M2) through the pinhole with diameter D. L1 is the distance between the moderator and the pinhole and L2 is the distance between the pinhole and the sample. The yellow shadow represents the slightly divergent neutron beam which illuminates the sample and the pink shadow the neutrons scattered from the sample. A sample in position A (Pos. A) is in close contact with the detector, while a sample in position B (Pos. B) is at 200 mm distance from it. As an example, the dimensions for the NEUTRA beamline are (in mm) M1 = 155, M2 = 85, L1 = 1654, L2 = 5438, D = 20.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 51| Part 2| April 2018| Pages 386-394
https://doi.org/10.1107/S1600576718001607
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