[ Identification | Description | Examples | Input parameters | Links ]

The ILL_H5 Instrument

The full H5 cold guide at the ILL, with IN14, D16, Super-Adam, IN15, D22 This is the geometry before the major H5 guide hall upgrade (up to 2013).

Identification

• Site: ILL
• Author: FARHI Emmanuel (farhi@ill.fr)
• Origin: ILL
• Date: May, 2011

Description

This model decribes the full H5 cold guide at the ILL, with IN14, IN16, D16,
Super-Adam, IN15, D22.

The IN14 Cold neutron three-axis spectrometer IN14
The IN16 Cold neutron backscattering spectrometer IN16
simulated down to the 2nd deflector, and does not include the full
backscattering geometry.
The D16 Small momentum transfer diffractometer D16 is realistic
The SuperADAM reflectometer is used in low angle diffraction mode.
The IN15 Spin-echo spectrometer
is simulated with an incoming polarized beam, but not with a full spin-echo
description.
The D22 Large dynamic range small-angle diffractometer
is fully simulated
The CryoEDM with its polarized beam

For each instrument, a sample can be specified (liquid/powder/amorphous),
with monitoring of the scattering in angular (diffraction) and energy modes
(for spectroscopy).

Examples

(Test cases in bold)

• Test: lambda=5 Detector: H5_I=7.46e+13

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
lambda	AA	central wavelength band for guide illumination	5
dlambda	AA	half width of guide wavelength band	4.5
IN14_lambda	AA	IN14 monochromator setting wavelength. Usual 2.4 and 4.2	4.2
IN16_lambda	AA	IN16 monochromator setting wavelength. Usual 3.3 and 6.3	6.3
D16_lambda	AA	D16 monochromator setting wavelength. Usual 4.7 and 5.6	5.6
SADAM_lambda	AA	SuperADAM monochromator setting wavelength. Usual 4.4	4.4
IN15_lambda	AA	IN15 velocity selector setting wavelength	6.5
D22_lambda	AA	D22 velocity selector setting wavelength	4.5
D22_collimation	m	D22 collimation length and sample-detector distance	2
IN14_sample	string	IN14 liquid/powder/amorphous sample	"Rb_liq_coh.sqw"
IN16_sample	string	IN16 liquid/powder/amorphous sample	"Rb_liq_coh.sqw"
D16_sample	string	D16 liquid/powder/amorphous sample	"H2O_liq.qSq"
SADAM_sample	string	SuperADAM liquid/powder/amorphous sample	"SiO2_quartza.laz"
D22_sample	string	D22 liquid/powder/amorphous sample	"H2O_liq.qSq"
IN14_RMV	m	IN14 monochromator vertical curvature radius, -1 for automatic setting	-1
IN16_RMV	m	IN16 monochromator vertical curvature radius, -1 for automatic setting	-1
D16_RMV	m	D16 monochromator vertical curvature radius, -1 for automatic setting	-1
SADAM_RMV	m	SuperADAM monochromator vertical curvature radius, -1 for automatic setting	-1

Links

• Source code for ILL_H5.instr.
• The NoteDPT11 at the ILL
• Daily notes from K. Andersen about the H5 project
• Mirotron drawing MR-0656-000 for the IN15 V-mirror geometry

---

[ Identification | Description | Examples | Input parameters | Links ]

Generated for mcstas 3.9.2

---

Last Modified: Tuesday, 06-Oct-2026 21:19:11 CEST