The `templateTAS` Instrument

Template RESCAL type triple-axis machine (TAS)

Identification

Site: Templates
Author: Emmanuel Farhi
Origin: ILL (France)
Date: 2006
Version: 1.6

Description

This instrument is a simple model of triple-axis spectrometer.
It is directly illuminated by the moderator,
and has flat monochromator and analyzer. Sample is a vanadium cylinder.
Default geometry is from IN20@ILL.

Si       111 DM=3.135 AA
PG       002 DM=3.355 AA (Highly Oriented Pyrolytic Graphite)
Ge       311 DM=1.714 AA

IN22 configuration: 
    KI=3.84, QM=1.0, EN=0.0, verbose=1,
    WM=0.15, HM=0.12,    NHM=1, NVM=9, RMV=-1,
    WA=0.20, HA=0.10,  NHA=11, NVA=3, RAV=-1, RAH=-1, 
    SM=-1, SS=1, SA=-1,
    L1=10.0, L2=1.7, L3=1.0, L4=0.8

Example: mcrun templateTAS.instr EN=0.5 QM=1
Example: mcrun templateTAS.instr A1=20.6

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
KI	Angs-1	Incoming neutron wavevector	2.662
KF	Angs-1	Outgoing neutron wavevector	0
EI	meV	Incoming neutron energy	0
EF	meV	Outgoing neutron energy	0
QH	rlu	Measurement QH position in crystal	0
QK	rlu	Measurement QK position in crystal	0
QL	rlu	Measurement QL position in crystal	0
EN	meV	Energy transfert in crystal	0
QM	Angs-1	Wavevector transfert in crystal	0
KFIX	Angs-1	Fixed KI or KF value for Rescal compatibility	0
FX	1:KI,2:KF	Fixed KI or KF type for Rescal compatibility	0
L1	m	Source-Monochromator distance	9
L2	m	Monochromator-Sample distance	2.1
L3	m	Sample-Analyzer distance	1.5
L4	m	Analyzer-detector distance	0.7
SM	1:left, -1:right	Scattering sense of beam from Monochromator	1
SS	1:left, -1:right	Scattering sense of beam from Sample	-1
SA	1:left, -1:right	Scattering sense of beam from Analyzer	1
DM	Angs	Monochromator d-spacing	3.3539
DA	Angs	Analyzer d-spacing	3.3539
RMV	m	Monochromator vertical curvature, 0 for flat, -1 for automatic setting	0
RMH	m	Monochromator horizontal curvature, 0 for flat, -1 for automatic setting	0
RAV	m	Analyzer vertical curvature, 0 for flat, -1 for automatic setting	0
RAH	m	Analyzer horizontal curvature, 0 for flat, -1 for automatic setting	0
ETAM	arc min	Monochromator mosaic	30
ETAA	arc min	Analyzer mosaic	30
ALF1	arc min	Horizontal collimation from Source to Monochromator	60
ALF2	arc min	Horizontal collimation from Monochromator to Sample A	60
ALF3	arc min	Horizontal collimation from Sample to Analyzer	60
ALF4	arc min	Horizontal collimation from Analyzer to Detector	60
BET1	arc min	Vertical collimation from Source to Monochromator	120
BET2	arc min	Vertical collimation from Monochromator to Sample A	120
BET3	arc min	Vertical collimation from Sample to Analyzer	120
BET4	arc min	Vertical collimation from Analyzer to Detector	120
AS	Angs	Sample lattice parameter A	6.28
BS	Angs	Sample lattice parameter B	6.28
CS	Angs	Sample lattice parameter C	6.28
AA	deg	Angle between lattice vectors B,C	90
BB	deg	Angle between lattice vectors C,A	90
CC	deg	Angle between lattice vectors A,B	90
AX	rlu	First reciprocal lattice vector in scattering plane, X	1
AY	rlu	First reciprocal lattice vector in scattering plane, Y	0
AZ	rlu	First reciprocal lattice vector in scattering plane, Z	0
BX	rlu	Second reciprocal lattice vector in scattering plane, X	0
BY	rlu	Second reciprocal lattice vector in scattering plane, Y	1
BZ	rlu	Second reciprocal lattice vector in scattering plane, Z	0
verbose	1	print TAS configuration. 0 to be quiet	1
A1	deg	Monohromator rotation angle	0
A2	deg	Monohromator take-off angle	0
A3	deg	Sample rotation angle	0
A4	deg	Sample take-off angle	0
A5	deg	Analyzer rotation angle	0
A6	deg	Analyzer take-off angle	0

The templateTAS Instrument

Identification

Description

Input parameters

Links

The `templateTAS` Instrument