2020同步年報

100 ACTIVITY REPORT 2020 Fig. 3 : (above) Optical hutch with DCM and DMM mode. (right) The endstation consists of a pixel area detector (PAD), diffractometer, sample cooler, auto- matic sample changer and alignment tables of TPS 11A . Fig. 4 : SAXS/WAXS with double-crystal DCM/DMM mode of TPS 14A . phase (LCP) extruder) data collection. The optional mini-κ goniometer of the high-precision micro-diffractometer enables crystal reorientation. Substantial user support and remote access are also provided. The schematic drawing of the beamline and the design drawing of the endstation are shown in Fig. 3 . TPS 14A Small-angle X-ray Scattering Beamline A new TPS 14A Small-angle X-ray Scattering (SAXS) Beamline, with a bending-magnet as X-ray source of TPS at NSRRC, is planned for nanostructure-based research. The beamline will be equipped with a double Si(111) crystal with high energy resolution (Δ E / E = 2 × 10 -4 ) in energy range 5–23 keV and a double M o /B 4 C multilayer monochro- mator for 10–30 times greater flux (10 12 photons/s) in the 6–15 keV range. These two monochromators are incorpo- rated into one rotating cradle for quick exchange. The SAXS instrument, situated in an experimental hutch, comprises collimation, sample and post-sample stages. The sample stage can accommodate various sample geometries for thin films, and solution and solid samples. The post-sample section consists of a 1-mWAXS section with an area detec- tor (hybrid photon counting or complementary metal-ox- ide-semiconductor (CMOS) type), a vacuum bellows (1–8 m), a two-beamstop system and the SAXS detector system with an area hybrid photon-counting detector, all situated on a motorized optical bench for motion in six degrees of freedom. Synchronized SAXS and WAXS measurements are realized via a data-acquisition protocol that can integrate the area detectors for SAXS and WAXS (Eiger2 X or X-ray flat-panel detector); the protocol also incorporates auto- matic sample changing and programmable temperature control for efficient data collection protocols. In particular, the vacuum bellows of large inner diameter provides con- tinuous changes in the distance from sample to detector under vacuum. The performance of the instrument is illustrated via several measurements, including (1) simul- taneous SAXS/WAXS detecting hierarchical structure for block copolymer complexes, polymer crystallization and polymer composites, (2) SAXS/WAXS/ X-ray absorption