Conveners
X-ray and Gamma Ray Detectors 2
- David Smith (Brunel University London)
- Paul Sellin (University of Surrey)
Current breast cancer screening techniques suffer from reduced diagnostic performance for patients with mammographically dense breasts. An alternative screening method that overcomes this is Molecular Breast Imaging (MBI), which uses the 140.5 keV gamma-emitting tracer technetium-99m in conjunction with a gamma-camera to image breast tissue.
A gamma-camera is being developed for this...
The HEXITEC$_{MHz}$ ASIC has been developed for the HEXITEC$_{MHz}$ Detector System, to deliver spectroscopic x-ray imaging at frame rates up to 1MHz for future high-flux-rate applications. Optimised for sensing electron signals from detector materials such as CdTe, CZT, GaAs, Ge and p-type silicon detectors, the design has an array of 80x80 pixels on a pitch of 250$\mu$m, with each pixel...
Silicon Photomultipliers (SiPMs) are solid-state single photon detectors that show excellent performance in a wide range of applications. In 2015 FBK (Trento, Italy) developed a position sensitive SiPM technology, called “linearly-graded” (LG-SiPM), that showed position reconstruction resolution below 250 µm on an 8x8 mm² device area with only four readout channels and minimal distortions....
A monolithic silicon pixel detector is being designed in 130nm SiGe BiCMOS process of IHP to realize a pre-shower detector for the FASER experiment at CERN.
The pre-shower is designed to discriminate electromagnetic showers produced by two primary photons with an energy in the range 100 GeV to 1 TeV and with a separation as small as 200 micron. The monolithic ASIC will have hexagonal pixels...
