LAUE MONOCHROMATOR PERFORMANCE CALCULATIONS FOR A FUTURE CANADIAN LIGHT SOURCE DIFFRACTION BEAMLINE

• Main Author: Dina, Gabriel
• Other Authors: Kycia, Stefan
• Language: en
• Published: 2011
• Subjects: Laue Monochromators; CLS Beamline
• Online Access: http://hdl.handle.net/10214/3101

The computational investigation of perfect and bent crystals both cylindrically and sagittaly, have led to the development of sets of optimized parameters to be used for the high energy wiggler beamline monochromator being built at the CLS. Using both Si and Ge in Bragg and Laue geometries, the developed algorithms examine parameter space for most photon flux at the crystal. Using programs in XOP, the calculation analysis for a single incident beam revealed that for symmetric flat crystals the reflection (1,1,1) in the Bragg geometry is most preferable for producing the most throughput at energies below 24keV. For cylindrically bent crystals at energies higher than 24keV, a Laue geometry is more preferred as a result of an increase in the rocking curve width and throughput. Development of a program that calculates the diffracted intensity and energy resolution of a saddle bent crystal with varying asymmetry angles are presented here.