[ Identification | Description | Input parameters | Links ]

The Tools_ONION Instrument

Identification

• Site: Mantid
• Author: Thomas Huegle
• Origin: ORNL
• Date: July 2019

Description

Test case for an layered detector shell instrument to provide quick overview of resolution per pixel.
Set up to be run in McStas -> Mantid mode, refer to manual for details on execution.
Simulates desired divergence by adjusting moderator size.
Considers only in-plane (xwidth) factors, sets yheight as 1 cm.
For an example on how to analyze the data, see the 'Onion_analyzerScript.py' available at
https://github.com/McStasMcXtrace/McCode-contribution-support-docs/tree/master/McStas/2.6_Onion_tool_T_Huegle

Acceptable statistics can be achieved by running the simulation with 1E7 neutrons (output file: ~400MB)

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
divergence	degrees	angular divergence of neutrons reaching the sample	0.4
distance	m	distance between source and sample	32
filename			"source_sct521_bu_08_1.dat"

Links

• Source code for Tools_ONION.instr.
• "Using an onion like neutron scattering instrument model to quickly optimize design parameters"
• T. Huegle, Nuclear Instruments and Methods in Physics Research Section A, 2019
• Python script available at https://github.com/McStasMcXtrace/McCode-contribution-support-docs/tree/master/McStas/2.6_Onion_tool_T_Huegle

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[ Identification | Description | Input parameters | Links ]

Generated on 2023-09-19 20:01:36

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Last Modified: Tuesday, 17-Sep-2024 05:31:13 CEST