3.3.1.19. NXfermi_chopperΒΆ

Status:

base class, extends NXobject, version 1.0

Description:

A Fermi chopper, possibly with curved slits.

Symbols:

No symbol table
Groups cited:
NXgeometry

Structure:

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