PRIGo: a new multi-axis goniometer for macromolecular crystallography

The Parallel Robotics Inspired Goniometer (PRIGo) is a novel compact and high-precision goniometer providing an alternative to (mini-)kappa, traditional three-circle goniometers and Eulerian cradles used for sample reorientation in macromolecular crystallography. Based on a combination of serial and parallel kinematics, PRIGo emulates an arc. It is mounted on an air-bearing stage for rotation around ω and consists of four linear positioners working synchronously to achieve x, y, z translations and χ rotation (0–90°), followed by a ϕ stage (0–360°) for rotation around the sample holder axis. Owing to the use of piezo linear positioners and active correction, PRIGo features spheres of confusion of

Source: Journal of Synchrotron Radiation - May 9, 2015 Category: Physics Authors: Waltersperger, S.Olieric, V.Pradervand, C.Glettig, W.Salathe, M.Fuchs, M.R.Curtin, A.Wang, X.Ebner, S.Panepucci, E.Weinert, T.Schulze-Briese, C.Wang, M. Tags: multi-axis goniometry macromolecular crystallography diffractometer diffraction data collection strategy beamline endstation research papers Source Type: research