Used for SAXS, this diffractometer combines a high-power rotating anode with a two-dimensional detector and a long X-ray beam path to measure X-rays that are only slightly scattered away from the incident beam. The two-dimensional detector allows entire Debye rings to be collected and observed in real time. The current beam path length of 60.4 cm allows the resolution of crystallographic and structural features on a length scale from 1.8nm to 40nm (1.8nm is near the maximum resolvable length scale for XRPD in our other systems). A heater is available to heat the sample up to 200C.