Single-crystal diffraction at ES2 can be performed on the basis of sample rotation (PHI) with a maximum range of ±40 deg. with a fast detector (PILATUS3 S 1M) in transmission geometry.
45 (only +30 on the general-purpose experiment)
with a detector in forward geometry. Rotation in , ’ and 2,
commonly available at crystallographic beamlines or laboratory-based four-circle diffractometers, are not absolutely
necessary when conducting single-crystal diffraction at high
pressure in the DAC, because of the limited access to reciprocal space. Alignment of the sample in the DAC is accomplished by placing the sample into the rotation center of the !
rotation. For this purpose, the sample positioning stack offers
two horizontal translations (along and parallel to the beam)
above and below the ! rotation. The lower translations ensure
positioning of the center of the ! rotation into the beam,
whereas the upper translations enable positioning of the
sample into the ! rotation center.
