With 55 seconds of dead time between images with at least 4 minute exposures, the R-AXIS IV efficiently and accurately measures the when and where of every photon. The point spread function is excellent so that strong and weak peaks next to each other can be measured accurately. The readout noise per pixel is less than 1 x-ray photon. The physics of an IP is well understood. No external cooling is required.
Maintenance is minimal.
Long term performance is extensively documented. No detector calibration is required. No single component is excessively expensive, so maintenance contracts can be reasonably priced. It is the successor to the R-AXIS II , currently the most widely used area detector in the world. MSC is the only integrator of macromolecular diffraction systems that can make this statement.