Optimal data collection using photon-counting Hybrid Pixel Detectors

Optimal fine ϕ-slicing for single-photon-counting pixel detectors

The data-collection parameters used in a macromolecular diffraction experiment have a strong impact on data quality. A careful choice of parameters leads to better data and can make the difference between success and failure in phasing attempts, and will also result in a more accurate atomic model. The selection of parameters has to account for the application of the data in various phasing met...

Pixel hybrid photon detectors for the LHCb-RICH system

The baseline option for the photon detectors of the LHCb Ring Imaging Cherenkov (RICH) subsystem is the pixel hybrid photon detector (HPD) [1]. Commercially available pixel HPDs do not fully meet the LHCb RICH requirements, namely wide area coverage over 2.6 m, single photon sensitivity in the wavelength range of 200600 nm, channel size of 2.5 x 2.5 mm and a speed compatible with the LHC bunchc...

Energy calibration of energy-resolved photon-counting pixel detectors using laboratory polychromatic x-ray beams

Recently, photon-counting detectors capable of resolving incident x-ray photon energies have been considered for use in spectral x-ray imaging applications. For reliable use of energy-resolved photon-counting detectors (ERPCDs), energy calibration is an essential procedure prior to their use because variations in responses from each pixel of the ERPCD for incident photons, even at the same ener...

X-ray Imaging Using a Hybrid Photon Counting GaAs Pixel Detector

The performance of hybrid GaAs pixel detectors as X-ray imaging sensors were investigated at room temperature. These hybrids consist of 300 μm thick GaAs pixel detectors, flip-chip bonded to a CMOS Single Photon Counting Chip (PCC). This chip consists of a matrix of 64 x 64 identical square pixels (170 μm x 170 μm) and covers a total area of 1.2 cm. The electronics in each cell comprises a prea...

Single Photon Counting Detectors for TCSPC