6 October 1999 Performance of multiple-CCD x-ray detector system at SPring-8 for protein crystallography
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Abstract
The 4 X 4 multiple CCD X-ray detector installed in the beamline 45XU of the SPring-8 facility in Japan was examined by acquiring X-ray diffraction images of lysozyme crystals. The detector system was calibrated at the beamline by observing X-ray images of a flood-field and a mask pattern generated by the synchrotron radiation X-ray beam. It was found in the present work that the quality of the X-ray images observed is limited by an unexpected spike noise, the origin of which was suspected to be the (gamma) -rays emitted from the radioisotopes remaining in the X-ray scintillating screen. Image analysis carried out with a median filter predicted, however, that the image quality could be as high as designed, once the noise as well as the grain colonization is removed from the screen.
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Masayo Suzuki, Masayo Suzuki, Masaki Yamamoto, Masaki Yamamoto, Takashi Kumasaka, Takashi Kumasaka, Kazumichi Sato, Kazumichi Sato, Hidenori Toyokawa, Hidenori Toyokawa, Tatzuo Ueki, Tatzuo Ueki, } "Performance of multiple-CCD x-ray detector system at SPring-8 for protein crystallography", Proc. SPIE 3774, Detectors for Crystallography and Diffraction Studies at Synchrotron Sources, (6 October 1999); doi: 10.1117/12.367121; https://doi.org/10.1117/12.367121
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