Template of a beamline attenuator. If uncertain whether to use NXfilter (band-pass filter) or NXattenuator (reduces beam intensity), then use NXattenuator. Distance from sample Type or composition of attenuator, e.g. polythene Thickness of attenuator along beam direction Scattering cross section (coherent+incoherent) Absorption cross section The nominal amount of the beam that gets through (transmitted intensity)/(incident intensity) In or out or moving of the beam time stamp for this observation