The `ESRF_ID01` Instrument

Nano-diffraction imaging beamline at ESRF, Grenoble

Identification

Site: ESRF
Author: Martin Cramer Pedersen (mcpe@nbi.dk)
Origin: University of Copenhagen
Date: March, 2015

Description

This model of ID01 is designed specifically to conduct virtual scanning nano-diffraction imaging
experiments such as the one demonstrated Chahine et al., J. Appl. Cryst 47, 762-769. The model
includes beam-defining slits, a double Si111-monochromator, a Fresnel Zone Plate, a polycrystalline
sample designed specifically for this type of virtual experiments, and a detector set up mimicking the
set up at the actual beam-line. The nanodiffraction experiment is performed by locating a suitable peak
in the diffraction of the crystal (using the variables NominalEnergy, Delta, and Eta)
and then scan across the sample (using the variables Pix and ySamplePosition). By plotting
e.g. total detector intensity as a function of position, one can map out impurities in the sample by
their scattering properties.

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
DistanceSampleToDetector	m	Distance from sample to detector	0.5
NominalEnergy	keV	Nominal energy of photons after monochromation	8.0
Delta	deg	Angle rotating the detector around the sample in the yz-plane	0.0
Nu	deg	Horizontal plane rotation angle of the detector (for asymmetric peaks)	0.0
Eta	deg	Angle between the incoming beam and the sample normal in the yz-plane	0.0
Phi	deg	Horizontal plane rotation angle of the sample (for asymmetric peaks)	0.0
Pix	um	Horizontal offset of sample	0.0
Piy	um	Vertical offset of sample	0.0
SampleMosaicity	moa	Mosaicity of the sample crystal lattice	1.0
SampleDeltadoverd	1	Uncertainty in lattice parameter for the sample crystal lattice	0.001

McXtrace - An X-ray ray-trace simulation package

The ESRF_ID01 Instrument

Identification

Description

Input parameters

Links

The `ESRF_ID01` Instrument