3.3.1.55. NXvelocity_selectorΒΆ

Status:

base class, extends NXobject

Description:

A neutron velocity selector

Symbols:

No symbol table
Groups cited:
NXgeometry

Structure:

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

NXDL Source:
https://github.com/nexusformat/definitions/blob/master/base_classes/NXvelocity_selector.nxdl.xml