## Tri-crystal fixed exit monochromator

Zhogin, I. L.
##### Description
It is proposed a novel design of an X-ray monochromator which uses three crystals. The exit beam turns in horizontal plane on the angle $2\alpha$ with respect to the incoming beam. So, this kind of monochromator is suitable for side beam-lines; several tunable beam-lines can be built for a one fan beam of synchrotron radiation (from wiggler or bending magnet). In contrast to the double-crystal scheme of general position considered previously (which also suitable for side beam-lines), the new variant does not lead to a tilt of exit beam profile.
Comment: Latex, 3 pages, 3 figure (to be presented at SR-08 conference: http://ssrc.inp.nsk.su/SR2008/)
##### Keywords
Physics - Instrumentation and Detectors