[ Identification | Description | Input parameters | Links ]

The TAS1_Diff_Slit Instrument

The conventional cold-source triple-axis spectrometer TAS1 at Risoe National Laboratory used as a diffractometer for a collimation alignment study with a slit sample.

Identification

• Site: Risoe
• Author: A. Abrahamsen, N. B. Christensen, and E. Lauridsen
• Origin: Risoe
• Date: 1998

Description

This instrument is the conventional cold-source triple-axis spectrometer TAS1
at Risoe National Laboratory. It does not exist anymore, but was used as the
first detailed work performed with the McStas package.
Here it is used as a diffractometer for a collimation alignment study. The
sample is a slit and there is no analyzer.

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
PHM	deg	Monochromator arm angle, aka A1	-37.077
TTM	deg	Monochromator take-off angle, aka A2	-74
TT	deg	Take-off angle at the sample position, aka A4	33.52
C1	min	Collimator 1 aperture (mono-sample arm)	30
OMC1	deg	Tilt angle of the Collimator 1	5.5
C2	min	Collimator 2 aperture (sample-ana arm)	28
C3	min	Collimator 3 aperture (ana-detector arm)	67

Links

• Source code for linup-3.instr.
• The McStas User manual
• A. Abrahamsen, N. B. Christensen, and E. Lauridsen. McStas simulations of the TAS1 spectrometer. Student's report, Niels Bohr Institute, University of Copenhagen, 1998.

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[ Identification | Description | Input parameters | Links ]

Generated on 2024-01-03 11:47:43

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Last Modified: Tuesday, 17-Sep-2024 05:31:15 CEST