An economical x-ray area detector based on an intensified CCD unit

Abstract

An economical charge-coupled device (CCD) based area detector for x-ray experiments was developed and assembled. Although low in cost, careful evaluation shows that this detector consisting of an optical fiber taper, an image intensifier, a relay lens, and a cooled CCD unit has good overall features and is comparable with other reported CCD based x-ray area detectors. The detector is suitable for small-angle x-ray scattering and wide-angle x-ray diffraction experiments employing either synchrotron or conventional x-ray sources. It also has several options which we could utilize under different experimental conditions. The test result, its limitations, and possible improvements are discussed.

Time-Resolved Simultaneous SAXS/WAXS of the Drawing of Polyethylene at the Daresbury SRS

“…The full width at half maximum (FWHM) of the point spread function (PSF) is no more than a few pixels, which makes this detector ideal for the collection of X-ray fibre diffraction data. It is possible to show that the detector quantum efficiency (DQE) of the Photonic Science CCD detector system is ,-~0.7, which is comparable to that of similar electronic detectors (Gao, Li, Rousseau, Linliu & Chu, 1993). The maximum count rate that the detector can measure is determined by the full-well capacity of the CCD.…”

[Phase transition in polymer blends and structure of ionomers and copolymers]

“…In addition to the Braun linear position sensitive detector which belongs to the SUNY Beamline, we have adapted a linear photodiode array detector [4] and CCD cameras as an area x-ray detector [6,21,25] for intense synchrotron x-rays. The structures of supramolecules can best be investigated by a combination of light and x-ray scattering whereby one can determine the particle size, the core dimension, and the shape of supramolecules [5]."…”

A general technique for characterizing x-ray position sensitive arrays

“…The z; are chosen from a univariate distribution because the signa3 is spatially uniform. It can be shown that the response of the system can be written as 1111: (8). By measuring the spatial autocorrelation function, we can invert Eq.…”

“…Similar techniques have been used in the past [8], but neglected to consider the effect of spatial correlation between pixels on the calibration. Significant spatial correlation exists between neighboring pixels for typical position sensitive detectors, and we show how one can extract the resolution function from the correlation function.…”