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

The Test_focus Instrument

Focus testing, comparing Single_crystal and Monochromator_curved

Identification

• Site: Tests_optics
• Author: Tobias Weber (tweber@ill.fr)
• Origin: ILL
• Date: 3-Feb-2018

Description

For mono_ideal=0 the Single_crystal component is used as monochromator,
for mono_ideal=1 Monochromator_curved is used with the same settings.

The curvature of the monochromator can be set using mono_curvh and mono_curvv
for horizontal and vertical focusing, respectively.
For mono_curvh=0, mono_curvv=0 the monochromator is flat.
For mono_curvh=-1, mono_curvv=-1 optimal horizontal and vertical focusing is chosen.

Examples

(Test cases in bold)

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
src_lam	AA	Source mean wavelength	4.5
src_dlam	AA	Source wavelength spread	1.0
mono_ideal		Selection of mono-model 0=Single_crystal, 1=Monochromator_curved	0
mono_curvh	m	Monochromator horizontal curvature. -1: optimal, 0: flat	-1
mono_curvv	m	Monochromator vertical curvature -1: optimal, 0: flat	-1

Links

• Source code for Test_focus.instr.

---

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

Generated for mcstas 3.9.2

---

Last Modified: Sunday, 11-Oct-2026 15:14:09 CEST