Abstract: The present disclosure provides a system and method for efficiently mining multi-threshold measurements acquired using photon counting pixel-array detectors for spectral imaging and diffraction analyses. Images of X-ray intensity as a function of X-ray energy were recorded on a 6 megapixel X-ray photon counting array detector through linear fitting of the measured counts recorded as a function of counting threshold. An analytical model is disclosed for describing the probability density of detected voltage, utilizing fractional photon counting to account for edge/corner effects from voltage plumes that spread across multiple pixels. Three-parameter fits to the model were independently performed for each pixel in the array for X-ray scattering images acquired for 13.5 keV and 15.0 keV X-ray energies. From the established pixel responses, multi-threshold composite images produced from the sum of 13.5 keV and 15.

Abstract: A skid (10) is disclosed which includes a mainframe (22) and detachable side wings (22,24) which can be removed from the mainframe for transportation and attached to the mainframe at the site of use to enhance stability. The engine (14), compressor (12) and other equipment are mounted between the main beams (26, 28) of the mainframe (20) and suitable plates (136) are interdisposed between the main beams to allow a walkway between the engine and the compressor. Grating (156) is provided on other portions of the skid to facilitate use by operational personnel. All pipe runs beneath the grating and provisions are made for fluids to drain from the engine and compressor to storage tanks within the skid.