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

The templateTAS Instrument

Template RESCAL type triple-axis machine (TAS)

Identification

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

Links


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

Generated automatically by McDoc, Peter Willendrup <peter.willendrup@risoe.dk> / Fri Feb 11 10:12:10 2011