[ Identification | Description | Input 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

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

• Source code for RTP_SANS.instr.
• Nuclear Malaysia
• M. Sufi et al., J. AppL Cryst. (1997). 30, 884-888 [doi:10.1107/S0021889897001738]

---

[ Identification | Description | Input parameters | Links ]

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

---

Last Modified: Tuesday, 17-Sep-2024 05:31:14 CEST