NXvelocity_selector

Status:

base class, extends NXobject

Description:

A neutron velocity selector

Symbols:

No symbol table

Groups cited:

NXgeometry

Structure:

@default: (optional) NX_CHAR

Declares which child group contains a path leading to a NXdata group.

It is recommended (as of NIAC2014) to use this attribute to help define the path to the default dataset to be plotted. See https://www.nexusformat.org/2014_How_to_find_default_data.html for a summary of the discussion.

type: (optional) NX_CHAR

velocity selector type

rotation_speed: (optional) NX_FLOAT {units=NX_FREQUENCY}

velocity selector rotation speed

radius: (optional) NX_FLOAT {units=NX_LENGTH}

radius at beam centre

spwidth: (optional) NX_FLOAT {units=NX_LENGTH}

spoke width at beam centre

length: (optional) NX_FLOAT {units=NX_LENGTH}

rotor length

num: (optional) NX_INT {units=NX_UNITLESS}

number of spokes/lamella

twist: (optional) NX_FLOAT {units=NX_ANGLE}

twist angle along axis

table: (optional) NX_FLOAT {units=NX_ANGLE}

offset vertical angle

height: (optional) NX_FLOAT {units=NX_LENGTH}

input beam height

width: (optional) NX_FLOAT {units=NX_LENGTH}

input beam width

wavelength: (optional) NX_FLOAT {units=NX_WAVELENGTH}

wavelength

wavelength_spread: (optional) NX_FLOAT {units=NX_WAVELENGTH}

deviation FWHM /Wavelength

geometry: (optional) NXgeometry

Hypertext Anchors

Table of hypertext anchors for all groups, fields, attributes, and links defined in this class.

documentation (reST source) anchor

web page (HTML) anchor

/NXvelocity_selector/geometry-group

#nxvelocity-selector-geometry-group

/NXvelocity_selector/height-field

#nxvelocity-selector-height-field

/NXvelocity_selector/length-field

#nxvelocity-selector-length-field

/NXvelocity_selector/num-field

#nxvelocity-selector-num-field

/NXvelocity_selector/radius-field

#nxvelocity-selector-radius-field

/NXvelocity_selector/rotation_speed-field

#nxvelocity-selector-rotation-speed-field

/NXvelocity_selector/spwidth-field

#nxvelocity-selector-spwidth-field

/NXvelocity_selector/table-field

#nxvelocity-selector-table-field

/NXvelocity_selector/twist-field

#nxvelocity-selector-twist-field

/NXvelocity_selector/type-field

#nxvelocity-selector-type-field

/NXvelocity_selector/wavelength-field

#nxvelocity-selector-wavelength-field

/NXvelocity_selector/wavelength_spread-field

#nxvelocity-selector-wavelength-spread-field

/NXvelocity_selector/width-field

#nxvelocity-selector-width-field

/NXvelocity_selector@default-attribute

#nxvelocity-selector-default-attribute

NXDL Source:

https://github.com/FAIRmat-Experimental/nexus_definitions/tree/fairmat/base_classes/NXvelocity_selector.nxdl.xml