Monochromatic Neutron and X-ray Triple-Axis Spectrometer
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XML Meta-DTD Definition for NXmonotas.xml
This follows the XML Meta-DTD Definition format and can be downloaded from http://svn.nexusformat.org/definitions/tags/PRE_NXDL/instruments/NXmonotas.xml
<!--
URL: http://www.nexus.anl.gov/classes/xml/NXmonotas.xml
Editor: NIAC
NIAC Version: 0.1
$Id: NXmonotas.xml 46 2007-09-26 19:01:29Z L.lerusse $
Template of a generic NeXus file containing neutron or x-ray triple-axis data.
Multianalyzer systems are going to be complicated. Each analyzer is measuring a
separate H-K-L-dE. How this measurement is performed will vary from instrument
to instrument. Some will have a different detector for each analyzer. Others
will have windows within a 2D detector. The detector group (which must be
named "detector") will contain the counts associated with each analyzer. There
may in addition be raw_detector groups which contains the raw detector
counts independent of the masks.
H-K-L-dE are all stored with the sample. In the multianalyzer case these will
be arrays with one for each scan point (length np) and one for each analyzer
(length na). Note that np must be the first listed dimension.
Note that the image for each analyzer on the detector could be 0, 1 or 2D,
depending on whether i,j indices are present.
-->
<NXentry name="{Name of entry}">
<title>
{Extended title for entry}
</title>
<definition URL="http://www.nexus.anl.gov/instruments/xml/NXmonotas.xml"
version="1.0">
NXmonotas
</definition>
<start_time type="ISO8601">
{Starting time of measurement}
</start_time>
<NXsample name="{name of sample}">
<name type="NX_CHAR">
{Descriptive name of sample}?
</name>
<unit_cell type="NX_FLOAT[1,6])">
{Unit cell parameters (lengths and angles)}?
</unit_cell>
<orientation_matrix type="NX_FLOAT[3,3]">?
{Orientation matrix when appropriate}
</orientation_matrix>
<plane_vector_0 type="NX_FLOAT[3]">
{Reciprocal space vector of primary reflection in the scattering plane}
</plane_vector_0>
<plane_vector_1 type="NX_FLOAT[3]">
{Reciprocal space vector of secondary reflection in the scattering plane}
</plane_vector_1>
<polar_angle units="degree" type="NX_FLOAT[np]">
{Polar angle of the sample with respect to the beam incident on the monochromator}
</polar_angle>
<azimuthal_angle units="degree" type="NX_FLOAT">
{Azimuthal angle of the sample with respect to the beam incident on the
monochromator}
</azimuthal_angle>
<rotation_angle units="degree" type="NX_FLOAT[np]">
{Rotation angle of the sample}
</rotation_angle>
<sgu type="NX_FLOAT[np]" units="degree">?
{Sample stage tilt angle as defined by Lumsden}
</sgu>
<sgl type="NX_FLOAT[np]" units="degree">?
{Sample stage tilt angle as defined by Lumsden}
</sgl>
<Qh type="NX_FLOAT[np,na?]">
{Reciprocal space component of scan}
</Qh>
<Qk type="NX_FLOAT[np,na?]">
{Reciprocal space component of scan}
</Qk>
<Ql type="NX_FLOAT[np,na?]">
{Reciprocal space component of scan}
</Ql>
<energy_transfer units="meV" type="NX_FLOAT[np,na?]">
{Energy transfer of scan}
</energy_transfer>
</NXsample>
<NXinstrument name="{Name of instrument}">
<NXcollimator name="premonochromator_collimator">?
<type type="NX_CHAR">
"Soller"|"radial"
</type>
<soller_angle units="minute" type="NX_FLOAT">
{Angular divergence of Soller collimator}
</soller_angle>
</NXcollimator>
<NXfilter name="premonochromator_filter">?
<description type="NX_CHAR">
{"Beryllium" | "Pyrolytic Graphite" | "Graphite"}
</description>
</NXfilter>
<NXcrystal name="monochromator">
<type type="NX_CHAR">
{"PG (Highly Oriented Pyrolytic Graphite)" | "Ge" | "Si" | "Cu" |
"Fe3Si" | "CoFe" | "Cu2MnAl (Heusler)" | "Multilayer"}
</type>
<energy units="meV" type="NX_FLOAT[np]">
{Optimum diffracted energy}
</energy>
<d_spacing units="Angstrom" type="NX_FLOAT">
{The planar spacing of the nominal reflection}
</d_spacing>
<rotation_angle units="degree" type="NX_FLOAT[np]">
{Rotation angle of the monochromator}
</rotation_angle>
<curvature_horizontal type="NX_FLOAT" units="degrees">?
{Horizontal curvature of focusing crystal}?
</curvature_horizontal>
<curvature_vertical type="NX_FLOAT" units="degrees">?
{Vertical curvature of focusing crystal}?
</curvature_vertical>
</NXcrystal>
<NXcollimator name="presample_collimator">?
<type type="NX_CHAR">
"Soller"|"radial"
</type>
<soller_angle units="minute" type="NX_FLOAT">
{Angular divergence of Soller collimator}
</soller_angle>
</NXcollimator>
<NXfilter name="presample_filter">?
<description type="NX_CHAR">
{"Beryllium" | "Pyrolytic Graphite" | "Graphite"}
</description>
</NXfilter>
<NXcollimator name="preanalyzer_collimator">?
<type type="NX_CHAR">
"Soller"|"radial"
</type>
<soller_angle units="minute" type="NX_FLOAT">
{Angular divergence of Soller collimator}
</soller_angle>
</NXcollimator>
<NXfilter name="preanalyzer_filter">?
<description type="NX_CHAR">
{"Beryllium" | "Pyrolytic Graphite" | "Graphite"}
</description>
</NXfilter>
<NXcrystal name="analyzer">
<type type="NX_CHAR">
{"PG (Highly Oriented Pyrolytic Graphite)" | "Ge" | "Si" | "Cu" |
"Fe3Si" | "CoFe" | "Cu2MnAl (Heusler)" | "Multilayer"}
</type>
<energy units="meV" type="NX_FLOAT[np,na]">
{Optimum diffracted energy}
</energy>
<d_spacing units="Angstrom" type="NX_FLOAT">
{The planar spacing of the nominal reflection}
</d_spacing>
<polar_angle units="degree" type="NX_FLOAT[np,na?]">
{Polar angle of the analyzer with respect to the beam incident on the
monochromator}
</polar_angle>
<azimuthal_angle units="degree" type="NX_FLOAT">
{Azimuthal angle of the analyzer with respect to the beam incident on
the monochromator}
</azimuthal_angle>
<rotation_angle units="degree" type="NX_FLOAT[np,na?]">
{Rotation angle of the monochromator}
</rotation_angle>
<curvature_horizontal type="NX_FLOAT" units="degrees">?
{Horizontal curvature of focusing crystal}?
</curvature_horizontal>
<curvature_vertical type="NX_FLOAT" units="degrees">?
{Vertical curvature of focusing crystal}?
</curvature_vertical>
</NXcrystal>
<NXcollimator name="predetector_collimator">?
<type type="NX_CHAR">
"Soller"|"radial"
</type>
<soller_angle units="minute" type="NX_FLOAT">
{Angular divergence of Soller collimator}
</soller_angle>
</NXcollimator>
<NXdetector name="detector">
<counts signal="1" axes="energy_transfer|Qh|Qk|Ql" type="NX_INT[np,na?,i?,j?]">
{Integer counts}
</counts>
<polar_angle units="degree" type="NX_FLOAT[np,na?,i?,j?]">
{Polar angle of the detector with respect to the beam incident on the
monochromator}
</polar_angle>
<azimuthal_angle units="degree" type="NX_FLOAT[na?,i?,j?]">
{Azimuthal angle of the detector with respect to the beam incident on
the analyzer}
</azimuthal_angle>
<weight units="dimensionless" type="NX_FLOAT[np,na?]">?
{Relative weight of the different analyzers e.g., because the integrated
regions are not all the same size.}
</weight>
</NXdetector>
<NXdetector name="{raw_detector}">*
{Possible set of raw detectors in case the "detector" detector is really
a virtual detector.}
</NXdetector>
</NXinstrument>
<NXmonitor name="control">
<mode type="NX_CHAR">
"monitor"|"timer"
</mode>
<preset type="NX_FLOAT">
{preset value for time or monitor}
</preset>
<data type="NX_INT[np]">
{Monitor data}?
</data>
<count_time type="NX_FLOAT[np]" units="second">
{Elapsed time for each scan point}
</count_time>
</NXmonitor>
<NXdata name="data">
<Qh NAPIlink="NXentry/NXsample/Qh">
</Qh>
<Qk NAPIlink="NXentry/NXsample/Qk">
</Qk>
<Ql NAPIlink="NXentry/NXsample/Ql">
</Ql>
<energy_transfer NAPIlink="NXentry/NXsample/energy_transfer">
</energy_transfer>
<counts NAPIlink="NXentry/NXinstrument/detector/counts">
</counts>
<energy NAPIlink="NXentry/NXinstrument/analyzer/energy">
</energy>
</NXdata>
</NXentry>
Tabular Representation of XML Meta-DTD
(automatically generated from http://svn.nexusformat.org/definitions/tags/PRE_NXDL/instruments/NXmonotas.xml)
-
NXentry
Name Type Description Attributes title NX_CHAR Extended title for entry definition NX_CHAR URL="http://www.nexus.anl.gov/instruments/xml/NXmonotas.xml"
version="1.0"
start_time ISO 8601 Starting time of measurement {name of sample} NXsample -
NXsample
Name Type Description Attributes name NX_CHAR Descriptive name of sample unit_cell NX_FLOAT[1,6]) Unit cell parameters (lengths and angles) orientation_matrix NX_FLOAT[3,3] Orientation matrix when appropriate plane_vector_0 NX_FLOAT[3] Reciprocal space vector of primary reflection in the scattering plane plane_vector_1 NX_FLOAT[3] Reciprocal space vector of secondary reflection in the scattering plane polar_angle NX_FLOAT[np] Polar angle of the sample with respect to the beam incident on the monochromator units="degree"
azimuthal_angle NX_FLOAT Azimuthal angle of the sample with respect to the beam incident on the monochromator units="degree"
rotation_angle NX_FLOAT[np] Rotation angle of the sample units="degree"
sgu NX_FLOAT[np] Sample stage tilt angle as defined by Lumsden units="degree"
sgl NX_FLOAT[np] Sample stage tilt angle as defined by Lumsden units="degree"
Qh NX_FLOAT[np,na?] Reciprocal space component of scan Qk NX_FLOAT[np,na?] Reciprocal space component of scan Ql NX_FLOAT[np,na?] Reciprocal space component of scan energy_transfer NX_FLOAT[np,na?] Energy transfer of scan units="meV"
-
NXentry continued (1)
Name Type Description Attributes {Name of instrument} NXinstrument -
NXinstrument
Name Type Description Attributes premonochromator_collimator NXcollimator -
NXcollimator
Name Type Description Attributes type NX_CHAR soller_angle NX_FLOAT Angular divergence of Soller collimator units="minute"
-
NXinstrument continued (1)
Name Type Description Attributes premonochromator_filter NXfilter -
NXfilter
Name Type Description Attributes description NX_CHAR "Beryllium" | "Pyrolytic Graphite" | "Graphite" -
NXinstrument continued (2)
Name Type Description Attributes monochromator NXcrystal -
NXcrystal
Name Type Description Attributes type NX_CHAR "PG (Highly Oriented Pyrolytic Graphite)" | "Ge" | "Si" | "Cu" | "Fe3Si" | "CoFe" | "Cu2MnAl (Heusler)" | "Multilayer" energy NX_FLOAT[np] Optimum diffracted energy units="meV"
d_spacing NX_FLOAT The planar spacing of the nominal reflection units="Angstrom"
rotation_angle NX_FLOAT[np] Rotation angle of the monochromator units="degree"
curvature_horizontal NX_FLOAT Horizontal curvature of focusing crystal units="degrees"
curvature_vertical NX_FLOAT Vertical curvature of focusing crystal units="degrees"
-
NXinstrument continued (3)
Name Type Description Attributes presample_collimator NXcollimator -
NXcollimator
Name Type Description Attributes type NX_CHAR soller_angle NX_FLOAT Angular divergence of Soller collimator units="minute"
-
NXinstrument continued (4)
Name Type Description Attributes presample_filter NXfilter -
NXfilter
Name Type Description Attributes description NX_CHAR "Beryllium" | "Pyrolytic Graphite" | "Graphite" -
NXinstrument continued (5)
Name Type Description Attributes preanalyzer_collimator NXcollimator -
NXcollimator
Name Type Description Attributes type NX_CHAR soller_angle NX_FLOAT Angular divergence of Soller collimator units="minute"
-
NXinstrument continued (6)
Name Type Description Attributes preanalyzer_filter NXfilter -
NXfilter
Name Type Description Attributes description NX_CHAR "Beryllium" | "Pyrolytic Graphite" | "Graphite" -
NXinstrument continued (7)
Name Type Description Attributes analyzer NXcrystal -
NXcrystal
Name Type Description Attributes type NX_CHAR "PG (Highly Oriented Pyrolytic Graphite)" | "Ge" | "Si" | "Cu" | "Fe3Si" | "CoFe" | "Cu2MnAl (Heusler)" | "Multilayer" energy NX_FLOAT[np,na] Optimum diffracted energy units="meV"
d_spacing NX_FLOAT The planar spacing of the nominal reflection units="Angstrom"
polar_angle NX_FLOAT[np,na?] Polar angle of the analyzer with respect to the beam incident on the monochromator units="degree"
azimuthal_angle NX_FLOAT Azimuthal angle of the analyzer with respect to the beam incident on the monochromator units="degree"
rotation_angle NX_FLOAT[np,na?] Rotation angle of the monochromator units="degree"
curvature_horizontal NX_FLOAT Horizontal curvature of focusing crystal units="degrees"
curvature_vertical NX_FLOAT Vertical curvature of focusing crystal units="degrees"
-
NXinstrument continued (8)
Name Type Description Attributes predetector_collimator NXcollimator -
NXcollimator
Name Type Description Attributes type NX_CHAR soller_angle NX_FLOAT Angular divergence of Soller collimator units="minute"
-
NXinstrument continued (9)
Name Type Description Attributes detector NXdetector -
NXdetector
Name Type Description Attributes counts NX_INT[np,na?,i?,j?] Integer counts signal="1"
axes="energy_transfer|Qh|Qk|Ql"
polar_angle NX_FLOAT[np,na?,i?,j?] Polar angle of the detector with respect to the beam incident on the monochromator units="degree"
azimuthal_angle NX_FLOAT[na?,i?,j?] Azimuthal angle of the detector with respect to the beam incident on the analyzer units="degree"
weight NX_FLOAT[np,na?] Relative weight of the different analyzers e.g., because the integrated regions are not all the same size. units="dimensionless"
-
NXinstrument continued (10)
Name Type Description Attributes {raw_detector} NXdetector Possible set of raw detectors in case the "detector" detector is really a virtual detector. -
NXentry continued (2)
Name Type Description Attributes control NXmonitor -
NXmonitor
Name Type Description Attributes mode NX_CHAR preset NX_FLOAT preset value for time or monitor data NX_INT[np] Monitor data count_time NX_FLOAT[np] Elapsed time for each scan point units="second"
-
NXentry continued (3)
Name Type Description Attributes data NXdata -
NXdata
Name Type Description Attributes Qh NX_CHAR NAPIlink="NXentry/NXsample/Qh"
Qk NX_CHAR NAPIlink="NXentry/NXsample/Qk"
Ql NX_CHAR NAPIlink="NXentry/NXsample/Ql"
energy_transfer NX_CHAR NAPIlink="NXentry/NXsample/energy_transfer"
counts NX_CHAR NAPIlink="NXentry/NXinstrument/detector/counts"
energy NX_CHAR NAPIlink="NXentry/NXinstrument/analyzer/energy"
