Figure 1
Photograph of the I24 sample-environment setup used for in situ data collection. The translation axes enable any position within the crystallization plate to be centred onto the ω-rotation axes. The Oz axis enables the rotation axis to be translated along the direction of the beam and positioned at the focal point of the on-axis viewing system. Thus, movement along this axis can correct for changes in the focal length of the viewing system owing to the plate-refraction effects described in §2.2. The translations Sx, Sy and Sz, with ranges of travel of 80, 150 and 12 mm, respectively, are used to bring a crystal to the centre of rotation and into the X-ray beam. The scatter guard, beamstop and on-axis microscope are used as part of the setup for standard data collections. The gripper is capable of holding most SBS-format plates, including glass LCP plates. |