[ Identification | Description | Input parameters | Links ]

The SAFARI_MPISI Instrument

Materials Probe for Internal Strain Investigations

Identification

• Site: Necsa
• Author: Deon Marais (deon.marais@necsa.co.za)
• Origin: Necsa
• Date: September 2013

Description

Necsa Neutron Strain Scanner located at beam port 5 of the SAFARI-1 research reactor, South Africa

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
source_lam_min	Angs	Minimum wavelenth of source	0.5
source_lam_max	Angs	Maximum wavelenth of source	2.0
hi_res		Selects hi-resolution(1) or hi-intensity(0) reactor beam through primary shutter	0
mono_Si_type		Monochromator Silicon type options: 422 400 311 511 111 331	311
mono_mosh	arc min	Monochromator horizontal mosaicity	30
mono_mosv	arc min	Monochromator vertical mosaicity	30
mono_dx	m	Monochromator delta x - positive to left of reactor beam	0
mono_dy	m	Monochromator delta y - positive upward of reactor beam	0
mono_dz	m	Monochromator delta z - positive along reactor beam	0
mono_takeoff	deg	Monochromator takeoff angle - positive anti-clockwise from reactor beam	-83.5
mono_dtilt	deg	Monochromator tilt angle - not implemented yet	0
mono_Rh	m	Monochromator horizontal focus radius	3.572
port_takeoff	deg	Port takeoff angle - positive anti clockwise from reactor beam	-83.5
chamber_window_rad			0.05534
inc_slit_rot	deg	Incident slit delta rotation - not implemented yet	0
inc_slit_dx	m	Incident slit delta x position - positive to left of incident beam	0
inc_slit_to_cor	m	Incident slit to sample stage center of rotation	0.005
inc_slit_width	m	Incident slit width 0.00013m to 0.005m	0.005
inc_slit_height	m	Incident slit height 0m to 0.02m	0.02
inc_slit_sep		Incident slit separation between width and height. <0:use emperical calc, >=0:distance in m	-1
mono_to_cor	m	Distance between monochromator and center of rotation	2.5
sample_dx	m	Sample delta x - positive to left of incident beam if sample_dom=0	0
sample_dy	m	Sample delta y - positive upword of incident beam	0
sample_dz	m	Sample delta x - positive along of incident beam if sample_dom=0	0
sample_dom	deg	Sample delta omega - positive anti-clockwise from incident beam	0
det_takeoff	deg	Detector takeoff angle - positive anti-clockwise from incident beam	90
cor_to_det	m	Distance between sample centre of rotation and detector	1.148
diff_slit_dx	m	Diffracted slit delta x position - positive to left of diffracted beam	0
diff_slit_to_cor	deg	Distance between centre of rotation and diffracted slit	0.005
diff_slit_width	m	Diffracted slit width	0.005
diff_slit_height	m	Diffracted slit height	0.02
full_instrument		When 1, simulates the complete instrument. When 0, only simulate from the outlet collimator	1

Links

• Source code for SAFARI_MPISI.instr.
• The South African Nuclear Energy Corporation website

---

[ Identification | Description | Input parameters | Links ]

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

---

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