Double Crystal Monochromators

The Bruker ASC standard double crystal monochromator is a full in-vacuum solution. The entire optical system including the goniometer and all crystal adjustment are integrated into the vacuum vessel. The monochromator is entirely built on one goniometer with the surface of the first crystal in the center of rotation. The second crystal can be moved parallel and perpendicular to the crystal surface in order to realize a fixed beam offset during an energy scan. Both, the first and the second crystal set-up can be equipped with pitch, roll and yaw adjustments. 

The optics sits on a massive granite block and is fully decoupled from the vacuum chamber in order to realize a very stable set-up and to reduce influences from external vibrations. The granite block can be manually pre-adjusted in all directions.