The `PSI_ICON` Instrument

McStas model of the ICON imaging instrument at PSI, CH.

Identification

Site: PSI
Author: Peter Willendrup (DTU/ESS), Estrid B. Naver (DTU), based on earlier model from Ludovic Giller.
Origin: DTU/ESS
Date: June, 2021

Description

McStas model of the ICON imaging instrument at PSI, CH. Based on earlier model from Ludovic Giller, see links below.

The model was developed for an ICON beamtime focussing on exeriments using 'Propagation-based phase-contrast' aka. the Paganin-method.
The sample in the model is a series of metal sheets, each with different scattring/refracting properties. A refined version of this
instrument file was later used in the publication by Estrid B. Naver et. al., see links below.

Examples

(Test cases in bold)

Test: PSI_ICON.instr -y Detector: VarDetectorZoom_I=852147

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
lambda_min	AA	Minimum wavelength on wavelength monitors	0.3
lambda_max	AA	Maximum wavelength on wavelength monitors	10.0
eventmode	1	Flag to store neutron events with calculated sample-detector travel	0
all_mons	1	Flag to enable all monitors in the instrument	0
nx	1	Number of x-pixels, camera	512
ny	1	Number of y-pixels, camera	512
Lambda_Min	AA	Minimum wavelength produced from source	4.1
Lambda_Max	AA	Maximum wavelength produced from source	10
sp	m	Overall goniometer z-position wrt. camera	0
tx	m	Goniometer x-translation	0
ty	m	Goniometer y-translation	-0.0075
tz	m	Goniometer z-translation	0
rx	m	Goniometer x-rotation	0
ry	m	Goniometer y-rotation	0
rz	m	Goniometer z-rotation	0
delta_eps	m	Finite distance separating metal-slabs in sample	1e-9
delta_y	1	Size-factor between slabs of Zr and Al	0.1

The PSI_ICON Instrument

Identification

Description

Examples

Input parameters

Links

The `PSI_ICON` Instrument