Speaker
Dr
Wasi Faruqi
Description
Recent progress in detector design has created the need for a careful side-by-side comparison of the modulation transfer function (MTF) and resolution-dependent detective quantum efficiency (DQE) of existing electron detectors, including film, with detectors based on new technology. We will present the results of measurements of the MTF and DQE of several detectors at 120 and 300ke. MTF and DQE measurements for 300 keV electrons will be presented for three detectors, viz. film, CCD and MAPS and Medipix2 at 120 keV. Computer simulations have also been carried out, showing good agreement with the experimental results. We will conclude that the DQE to be expected from direct detection by back-thinned CMOS designs is likely to be equal to or better than film at 300 keV.
Author
Dr
Wasi Faruqi
