Sample Alignment Quick Reference

Back to X-Ray Microscopy

1) Select x-ray energy:
Calculate scattering angle of Si 111 for desired energy with Bragg law calculator (or approximate Theta ~ asin(1.977084/E keV) )
Drive DCM Theta to the correct Bragg angle for the desired energy, drive undulators approximately to this energy as well

NOTES:
i) If DCM theta looks low for the current energy (~2-4 deg) you may need to re-set user offset (current calibrated theta offset = dial + 8.646deg)
ii) Approximate undulator offsets are ~ desired energy +0.1 keV