+ NXtofnref {Name of instrument} {(x,y,z) position coordinates relative to origin at sample position}? {The orientation information is stored as direction cosines relative to origin at sample position.} {"nxcylinder", "nxbox", "nxsphere", ...}? { nshapepar dimensions for selected shape}? {Sequential order of target along beam path} {Optional description/label}? {Sequential order of component along beam path}? {"Engineering" position of moderator}? {Effective distance as seen by measuring radiation}? { "H20" | "D20" | "Liquid H2" | "Liquid CH4" | "Liquid D2" | "Solid D2" | "C" |"Solid CH4" | "Solid H2"}? {Poison depth}? {whether the moderator is coupled}? { Gd | Cd |...} {average/nominal moderator temperature} {log file of moderator temperature} {moderator pulse shape} {Position and orientation of moderator}? {(x,y,z) position coordinates relative to origin at sample position}? {The orientation information is stored as direction cosines relative to origin at sample position.} {"nxcylinder", "nxbox", "nxsphere", ...}? { nshapepar dimensions for selected shape}? {Sequential order of moderator along beam path} * {} {} {Reflectivity as function of wavelength [nsurf,i]} {} {} "vacuum"|"helium"|"argon" {external material outside substrate} {} {} {} {} {} {} {number of substrate sections} {Position and orientation of guide}? {(x,y,z) position coordinates relative to origin at sample position}? {The orientation information is stored as direction cosines relative to origin at sample position.} {"nxcylinder", "nxbox", "nxsphere", ...}? { nshapepar dimensions for selected shape}? {Sequential order of guide along beam path} ? {Chopper type single|contra_rotating_pair|synchro_pair}? {chopper rotation speed}? {Number of slits} {angular opening} {disc spacing in direction of beam}? {radius to centre of slit} {total slit height} {chopper phase angle}? {pulse reduction factor of this chopper in relation to other choppers/fastest pulse in the instrument}? {Effective distance to the origin}? {low and high values of wavelength range transmitted}? {Position and orientation of chopper}? {(x,y,z) position coordinates relative to origin at sample position}? {The orientation information is stored as direction cosines relative to origin at sample position.} {"nxcylinder", "nxbox", "nxsphere", ...}? { nshapepar dimensions for selected shape}? {Sequential order of chopper along beam path} * {Absorbing material of the aperture}? {Description of aperture}? {Position and orientation of aperture}? {(x,y,z) position coordinates relative to origin at sample position}? {The orientation information is stored as direction cosines relative to origin at sample position.} {"nxcylinder", "nxbox", "nxsphere", ...}? { nshapepar dimensions for selected shape}? {Sequential order of aperture along beam path} + "Fission Chamber"|"Scintillator"? "monitor"|"timer"? {preset value for time or monitor}? {Distance of monitor from sample position}? {Monitor efficiency as a function of wavelength}? {Proportion of incident beam sampled by the monitor} {Position and orientation of monitor}? {(x,y,z) position coordinates relative to origin at sample position}? {The orientation information is stored as direction cosines relative to origin at sample position.} {"nxcylinder", "nxbox", "nxsphere", ...}? { nshapepar dimensions for selected shape}? {Sequential order of monitor along beam path} {} {} {Reflectivity as function of wavelength} {} {} "vacuum"|"helium"|"argon" {external material outside substrate} {} {} {} {} {} {} {Position and orientation of mirror}? {(x,y,z) position coordinates relative to origin at sample position}? {The orientation information is stored as direction cosines relative to origin at sample position.} {"nxcylinder", "nxbox", "nxsphere", ...}? { nshapepar dimensions for selected shape}? {Sequential order of aperture along beam path} * {} {} {Reflectivity as function of wavelength} {} {} "vacuum"|"helium"|"argon" {external material outside substrate} {} {} {} {} {} {} {Position and orientation of polariser}? {(x,y,z) position coordinates relative to origin at sample position}? {The orientation information is stored as direction cosines relative to origin at sample position.} {"nxcylinder", "nxbox", "nxsphere", ...}? { nshapepar dimensions for selected shape}? {Sequential order of aperture along beam path} * {coil|current-sheet}? {Number of turns/cm in flipping field coils}? {Number of turns/cm in compensating field coils}? {Number of turns/cm in guide field coils}? {Flipping field coil current in "on" state"}? {Compensating field coil current in "on" state"}? {Guide field coil current in "on" state"}? {thickness along path of neutron travel}? {Position and orientation of flipper}? {(x,y,z) position coordinates relative to origin at sample position}? {The orientation information is stored as direction cosines relative to origin at sample position.} {"nxcylinder", "nxbox", "nxsphere", ...}? { nshapepar dimensions for selected shape}? {Sequential order of aperture along beam path} + {Total time of flight} {Identifier for detector}? {Data values}? {Data values} {offset from the detector center in x-direction}? {offset from the detector center in the y-direction}? {name/manufacturer/model/etc. information}? {Position and orientation of detector element}? {translation normal to direct beam}? {Solid angle subtended by the detector at the sample}? {Size of each detector pixel. If it is scalar all pixels are the same size}? {Size of each detector pixel. If it is scalar all pixels are the same size}? {Detector dead time}? {Delay in detector registering an event}? {Detector gas pressure}? {maximum drift space dimension}? {Crate number of detector}? {Slot number of detector}? {Input number of detector}? "He3 gas cylinder"|He3 PSD"|"He3 planar multidetector"| "He3 curved multidetector"| "multi-tube He3 PSD"|"BF3 gas"|"scintillator"|"fission chamber"? {Efficiency of detector with respect to e.g. wavelength}? {date of last calibration (geometry and/or efficiency) measurements}? {summary of conversion of array data to pixels (e.g. polynomial approximations) and location of details of the calibrations}? {Position and orientation of aperture}? {(x,y,z) position coordinates relative to origin at sample position}? {The orientation information is stored as direction cosines relative to origin at sample position.} {"nxcylinder", "nxbox", "nxsphere", ...}? { nshapepar dimensions for selected shape}? {Sequential order of aperture along beam path}