Synchrotron applications of an amorphous silicon flat-panel detector

Journal of Synchrotron Radiation
John H LeeGerman Vera

Abstract

A GE Revolution 41RT flat-panel detector (GE 41RT) from GE Healthcare (GE) has been in operation at the Advanced Photon Source for over two years. The detector has an active area of 41 cm x 41 cm with 200 microm x 200 microm pixel size. The nominal working photon energy is around 80 keV. The physical set-up and utility software of the detector system are discussed in this article. The linearity of the detector response was measured at 80.7 keV. The memory effect of the detector element, called lag, was also measured at different exposure times and gain settings. The modulation transfer function was measured in terms of the line-spread function using a 25 microm x 1 cm tungsten slit. The background (dark) signal, the signal that the detector will carry without exposure to X-rays, was measured at three different gain settings and with exposure times of 1 ms to 15 s. The radial geometric flatness of the sensor panel was measured using the diffraction pattern from a CeO(2) powder standard. The large active area and fast data-capturing rate, i.e. 8 frames s(-1) in radiography mode, 30 frames s(-1) in fluoroscopy mode, make the GE 41RT one of a kind and very versatile in synchrotron diffraction. The loading behavior of a Cu/Nb multil...Continue Reading

Citations

Aug 21, 2010·Journal of Synchrotron Radiation·Anna BergamaschiXintian Shi
Mar 7, 2014·ChemSusChem·Kirsten M Ø JensenBo B Iversen
May 26, 2010·Analytical Chemistry·Kouichi TsujiChul-Un Ro
Nov 3, 2021·Acta Crystallographica. Section A, Foundations and Advances·Robert J KochEmil S Bozin

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