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Advanced small molecule CCD crystallography system

Product Announcement from Rigaku Corporation

Advanced small molecule CCD crystallography system-Image

Saturn Kappa

For the expert small molecule crystallographer, where a flexible configuration is required, Rigaku offers the Saturn Kappa chemical crystallography system. The Saturn Kappa is a popular choice of system for single wavelength small molecule crystallography. Most often configured with molybdenum (Mo) radiation, but also available with copper Cu), the typical system comprises a 4-circle κ goniometer mounted with a single wavelength sealed tube X-ray source and Saturn 724 HG CCD detector. With a fast and sensitive 18-bit CCD detector, the Saturn Kappa is the perfect choice of X-ray diffractometer for both day-to-day routine crystal structure determinations and the more challenging high-resolution electron density studies.

Kappa goniometer

At the heart of the product is our AFC-Kappa goniometer, a design that benefits from over fifty years of precision engineering experience. The open geometry vastly simplifies crystal mounting, alignment and positioning of low temperature devices while providing superior coverage of reciprocal space, even in the presence of tertiary equipment. And free rotation about the Kappa-axis gives the AFC-Kappa more flexible positioning. However, depending on your requirements, a 4-axis partial χ goniometer (AFC-11) and a 3-axis fixed χ goniometer (AFC-10) are also available.

Choice of available X-ray sources

Inherent to the unique flexibility of this system is a choice of X-ray sources, ranging from: a high-frequency 3 kW sealed tube, to a MicroMax™-003 microfocus seal tube, to a 1.2 kW MicroMax-007 HF microfocus rotating anode. Available optics range from a traditional graphite monochromator or high-performance SHINE™ optic to a VariMax™ confocal X-ray optic.

Advanced 18-bit CCD detector technology

Standard on the system is the Rigaku Saturn 724 HG, a CCD detector technology optimized for small molecule crystallography. Optimized for molybdenum (Mo) radiation, the large 72 mm x 72 mm (97 mm diagonal) aperture and high sensitivity of the Saturn 724 HG enables collection of higher resolution data, with greater redundancy, at a given crystal-to-detector distance. Designed and manufactured by Rigaku, this detector employs the advanced (Truesense Imaging, Inc.) KAF-4320E CCD sensor, incorporating transparent indium tin oxide (ITO) technology for superior sensitivity. The front illuminated sensor, optimized for high dynamic range and superior spatial resolution, is coupled with a state-of-the-art high speed 18-bit analog-to-digital converter and 4-port parallel readout to simultaneously deliver low noise, high dynamic range and ultra fast readout times. The optional Saturn 944 HG detector features the same advanced technology, with an even larger 94 mm x 94 mm image area, and is the best choice for those employing Cu radiation.


    • 4-circle κ goniometer
    • Saturn 724 HG CCD detector
    • Choice of X-ray sources
      • 3 kW sealed tube
      • Microfocus seal tube
      • 1.2 kW rotating anode
    • Complete software suite
      • CrystalClear™
      • CrystalStructure™
    • Choice or radiation
      • Molybdenum
      • Copper
    • Optional sample changer