HXMA Technical Details-optics
The Beamline Optics
The primary optics include water-cooled vertical silicon collimating mirror: 1.2 m optical length, exchangeable between Rh and Pt coating stripes by mirror tank transverse motion, maximum absorbing thermal power of 500 W; Kohzu CMJ-1 DCM: selectable Si 111 or Si 220 crystal pairs exchanged by transverse motion of the vacuum housing, indirect LN cooling for max 500 W absorbing thermal power on 1st crystal; water-cooled silicon toroidal focusing mirror: 1.15 m optical length, exchangeable Rh and Pt coating stripes, maximum absorbing thermal power 200 W.
This layout permits three SR beam operation modes:
- The mirror-mono-mirror mode (5 -30 keV)
- Mono-only mode (5-40 keV)
- Mirror-mirror focused pink beam mode (1600 W broad band pink SR output at the beamline exit window).
The Beamline components were designed to be very flexible and allow for three separate optical modes of operation.
- Mirror-Mono-Mirror Mode (5 - 30 keV)
- Mono Only Mode (30 - 40 keV), this mode is used for probing elements with edges higher than 30 keV
- Broad Band Collimating Mirror Only Pink Beam (5 - 30 keV) - This mode gives us Energy Dispersive Spectroscopy Capability, or Laue Diffraction
Any of these three operational modes can be applied to XAFS or diffraction experiments. For Microprobe experiments we also use a Kirkpatrick-Baze (KB) mirror bender to achieve smaller spot sizes.
There are many other components of the beamline that keep it working, keep us safe and help us optimize our performance. These include photon and safety shutters, beam position monitors, conductance limiters, fluorescence screens, GB collimators, white beam slits and graphite filters (with 15 possible thickness configurations). View a schematic of the Optical Components
View the Beamlines Expected Performance Tables
More about the Monochromator
More about the Vertical Collimating Mirror
More about the Toroidal Focusing Mirror
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