Design criteria and development of components for a modular CCD-based detector for x-ray crystallography

Daniel M. O'Mara; Wilfried R. Philips; Martin J. Stanton; Daniel Saroff; Istvan Naday; Edwin M. Westbrook

doi:10.1117/12.135946

12 August 1992 Design criteria and development of components for a modular CCD-based detector for x-ray crystallography

Daniel M. O'Mara, Wilfried R. Philips, Martin J. Stanton, Daniel Saroff, Istvan Naday, Edwin M. Westbrook

Proceedings Volume 1656, High-Resolution Sensors and Hybrid Systems; (1992) https://doi.org/10.1117/12.135946
Event: SPIE/IS&T 1992 Symposium on Electronic Imaging: Science and Technology, 1992, San Jose, CA, United States

Abstract

X-ray detector systems for protein crystallographic applications require a large active area and a high detective quantum efficiency (DQE). Using large-format scientific CCDs we are developing a detector based on multiple modules each consisting of a fiberoptic taper with a phosphor x-ray converter deposited on the large end and a CCD coupled to the small end. This approach contrasts with the more typical method of imaging a large area onto a single sensor which requires intensification stages. This system will provide a greater DQE lower spatial and response nonuniformities a smaller package size higher spatial resolution and uniformity and greater reliability. The construction of this system has necessitated development and cha racterization of x-ray-tolight phosphor converters and techniques for coupling fiberoptics to COD imagers. Refinement of phosphor deposition and reflective enhancement methods has led to an increase in phosphor conversion efficiencies over our previous methods of -80. A system to epoxy bond fiberoptic tapers to both front and back illuminated COD imagers with precise control over positioning and clamp force has been developed and tested with fiber faceplates. 1.

Citation Download Citation

Daniel M. O'Mara, Wilfried R. Philips, Martin J. Stanton, Daniel Saroff, Istvan Naday, and Edwin M. Westbrook "Design criteria and development of components for a modular CCD-based detector for x-ray crystallography", Proc. SPIE 1656, High-Resolution Sensors and Hybrid Systems, (12 August 1992); https://doi.org/10.1117/12.135946

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