NXfermi_chopper

Status:

base class, extends NXobject

Description:

A Fermi chopper, possibly with curved slits.

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

Fermi chopper type

rotation_speed: (optional) NX_FLOAT {units=NX_FREQUENCY}

chopper rotation speed

radius: (optional) NX_FLOAT {units=NX_LENGTH}

radius of chopper

slit: (optional) NX_FLOAT {units=NX_LENGTH}

width of an individual slit

r_slit: (optional) NX_FLOAT {units=NX_LENGTH}

radius of curvature of slits

number: (optional) NX_INT {units=NX_UNITLESS}

number of slits

height: (optional) NX_FLOAT {units=NX_LENGTH}

input beam height

width: (optional) NX_FLOAT {units=NX_LENGTH}

input beam width

distance: (optional) NX_FLOAT {units=NX_LENGTH}

distance

wavelength: (optional) NX_FLOAT {units=NX_WAVELENGTH}

Wavelength transmitted by chopper

energy: (optional) NX_FLOAT {units=NX_ENERGY}

energy selected

absorbing_material: (optional) NX_CHAR

absorbing material

transmitting_material: (optional) NX_CHAR

transmitting material

GEOMETRY: (optional) NXgeometry

geometry of the fermi chopper

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

/NXfermi_chopper/absorbing_material-field

#nxfermi-chopper-absorbing-material-field

/NXfermi_chopper/distance-field

#nxfermi-chopper-distance-field

/NXfermi_chopper/energy-field

#nxfermi-chopper-energy-field

/NXfermi_chopper/GEOMETRY-group

#nxfermi-chopper-geometry-group

/NXfermi_chopper/height-field

#nxfermi-chopper-height-field

/NXfermi_chopper/number-field

#nxfermi-chopper-number-field

/NXfermi_chopper/r_slit-field

#nxfermi-chopper-r-slit-field

/NXfermi_chopper/radius-field

#nxfermi-chopper-radius-field

/NXfermi_chopper/rotation_speed-field

#nxfermi-chopper-rotation-speed-field

/NXfermi_chopper/slit-field

#nxfermi-chopper-slit-field

/NXfermi_chopper/transmitting_material-field

#nxfermi-chopper-transmitting-material-field

/NXfermi_chopper/type-field

#nxfermi-chopper-type-field

/NXfermi_chopper/wavelength-field

#nxfermi-chopper-wavelength-field

/NXfermi_chopper/width-field

#nxfermi-chopper-width-field

/NXfermi_chopper@default-attribute

#nxfermi-chopper-default-attribute

NXDL Source:

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