Template for specifying the state of band pass filters. If uncertain whether to use NXfilter (band-pass filter) or NXattenuator (reduces beam intensity), then use NXattenuator. Geometry of the filter Composition of the filter. Chemical formula can be specified separately. This field was changed (2010-11-17) from an enumeration to a string since common usage showed a wider variety of use than a simple list. These are the items in the list at the time of the change: Beryllium Pyrolytic Graphite Graphite Sapphire Silicon Supermirror position with respect to in or out of the beam (choice of only "in" or "out") in the beam out of the beam Wavelength transmission profile of filter average/nominal filter temperature Linked temperature_log for the filter Thickness of the filter mass density of the filter The chemical formula specified using CIF conventions. Abbreviated version of CIF standard: Only recognized element symbols may be used. Each element symbol is followed by a 'count' number. A count of '1' may be omitted. A space or parenthesis must separate each cluster of (element symbol + count). Where a group of elements is enclosed in parentheses, the multiplier for the group must follow the closing parentheses. That is, all element and group multipliers are assumed to be printed as subscripted numbers. Unless the elements are ordered in a manner that corresponds to their chemical structure, the order of the elements within any group or moiety depends on whether or not carbon is present. If carbon is present, the order should be: C, then H, then the other elements in alphabetical order of their symbol. If carbon is not present, the elements are listed purely in alphabetic order of their symbol. This is the 'Hill' system used by Chemical Abstracts. Sensor(s)used to monitor the filter temperature Unit cell lattice parameter: length of side a Unit cell lattice parameter: length of side b Unit cell lattice parameter: length of side c Unit cell lattice parameter: angle alpha Unit cell lattice parameter: angle beta Unit cell lattice parameter: angle gamma Unit cell Orientation matrix of single crystal filter using Busing-Levy convention m value of supermirror filter substrate material of supermirror filter substrate thickness of supermirror filter coating material of supermirror filter substrate roughness (RMS) of supermirror filter coating roughness (RMS) of supermirror filter