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McStas: RTP_SANS Instrument at TRIGA

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

The RTP_SANS Instrument

The SANS instrument installed at Reactor TRIGA PUSPATI (Malaysia)

Identification

  • Site: TRIGA
  • Author: E. Farhi and Megat Harun Al-Rashid
  • Origin: ILL/RTP
  • Date: June 2014
  • Version:(Unknown)

Description

This is a 4m long SANS installed on a radial beam port 4 at the Reactor TRIGA
PUSPATI (RTP). Te beam port 4 is a radial tube that originates from the core,
through the graphite reflector. A thick Be filter selects the cold tail of the
thermal spectrum, and removes higher order PG reflections.
A PG(002) monochromator selects the 5A neutrons that are sent into a 4m - 4m
SANS with a 60 cm PSD detector 128x128 pixels.
The monochromator is here used in fixed double focusing geometry.
The accessible Q range is then 0.01-0.1 Angs-1.

This model contains a detailed description of the Be filter, monochromator
and SANS set-up. The Be filter is in the monochromator block.

Example: mcrun RTP_SANS.instr lambda=5

Input parameters

Parameters in boldface are required; the others are optional.
Name Unit Description Default
lambda Angs monochromator selected wavelength 5
DM Angs d-spacing for the monochromator reflection 3.355
dlambda Angs monochromator wavelength spread .2
Be_Filter_depth .15
Mono_tilt deg angle tilt between the 3 monochromator layers -1
mono_rotation deg additional monochromator offset rotation for e.g rocking curves 0

Links


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

Generated automatically by McDoc, Peter Willendrup <peter.willendrup@risoe.dk> / Mon Jun 26 12:27:17 2017


Last Modified: Monday, 26-Jun-2017 14:27:17 CEST
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