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

The Test_Collimator_Radial Instrument

Cross comparison of radial collimator components

Identification

• Site: Tests_optics
• Author: E. Farhi [farhi@ill.fr]
• Origin: ILL
• Date: Sept 1st, 2008

Description

Cross comparison of radial collimator components, using McStas and
contributed components. It shows that all implementations are equivalent.
The Exact_radial_coll contributed component also takes into account the absorbing
blade thickness between slits, which decreases slightly intensity.

Examples

(Test cases in bold)

• Test: Collimator=1 Detector: BananaTheta_I=1.52649e-08
• Test: Collimator=2 Detector: BananaTheta_I=1.41509e-08
• Test: Collimator=3 Detector: BananaTheta_I=1.581e-08

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
Collimator	1	Choice of radial collimator component to test, with 1=Collimator_Radial, 2=Collimator_ROC, 3=Exact_radial_coll.	1
Powder	string	Reflection list for powder-sample	"Na2Ca3Al2F14.laz"

Links

• Source code for Test_Collimator_Radial.instr.

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

Generated for mcstas 3.8.4

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Last Modified: Friday, 11-Sep-2026 15:00:09 CEST