Ray tracing - ESRF

Focusing optics III
Sagittal bending
Two aspects that can be analyzed:
1) The effects of surface shape:
• ❑ Anticlastic effect
• ❑ Alignment
• ❑ Loss of cylindrical shape
• ❑ Spurious errors left by ribs
• ❑ Conical surface: Ice & Sparks, JOSA
A11 (1994) 1265
Manuel Sánchez del Río
p q
2) beam transmission as a function of
the angular divergence [Sparks et al.,
NIM 172 (1980) 237]. The
M=1:3=0.33 is optimal to focus divergent
beams.
M=q/p=1:3
Ray tracing simulations for crystal optics (20 of 23)
5 mrad
2.5 mrad
1 mrad
SPIE, July 22, 1998