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

The Test_MCViNE_Phonon_IncoherentElastic Instrument

Test of the MCViNE Phonon_IncoherentElastic kernel (incoherent elastic with Debye-Waller factor from a DOS), as a Union process and as a standalone sample

Identification

• Site: Tests_samples
• Author: Fahima Islam
• Origin: MCViNE (https://github.com/mcvine/mcvine) kernels ported to McStas
• Date: 2026-09-29

Description

Monochromatic beam on a small sample described by the MCViNE Phonon_IncoherentElastic kernel.
comp_select=1 uses the Union process MCViNE_Phonon_IncoherentElastic_process (geometry, absorption
and multiple scattering by Union_master); comp_select=2 uses the standalone
component MCViNE_Phonon_IncoherentElastic with the same geometry, absorption and up to 20 orders of
scattering. The two should give the same scattered intensity (see the two
example lines below).

Examples

(Test cases in bold)

• Test: comp_select=1 Detector: detector_I=9.02166e-07
• Test: comp_select=2 Detector: detector_I=9.00509e-07

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
comp_select	1	1: Union process MCViNE_Phonon_IncoherentElastic_process in Union_master, 2: standalone MCViNE_Phonon_IncoherentElastic	1
Ei	meV	Incident energy	60

Links

• Source code for Test_MCViNE_Phonon_IncoherentElastic.instr.

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

Generated for mcstas 3.9.2

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