Comission on Powder Diffraction International Union of Crystallography
نویسندگان
چکیده
SPODI, the Structure POwder DIffractometer, will be installed on beamline SR 8 at the FRM II in Garching. The instrument has been designed to achieve an ideal compromise of good-resolution up to very high 2θ (by using a monochromator take-off angle of 155°) and highflux with special emphasis on ‘good’ profile shapes and low background. To optimise the parameters of the optical components like coatings of neutron guides, monochromator and soller collimators Monte Carlo simulations were carried out. To check the results of the simulation calculations with two different independent programs (MCSTAS and RESTRAX) were applied. An option for using a Small-Angle Neutron Scattering (SANS) device will eventually be included to perform Bragg scattering, SANS and diffuse scattering simultaneously on the sample.
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