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The imaging semiconductor pixel detector Timepix allows the charge collected in each of its 256??256 pixels (55 ??m pitch) to be measured. This feature makes it suitable for applications where the energy and position of incoming radiation needs to be determined. We are developing a fast neutron spectroscopy and radiography technique that is based on tracking protons recoiled by fast neutrons. The...
For medical imaging applications the emphasis is generally put on obtaining high resolution and low dose images of samples or patients. All this features can be covered by using the single photon counting devices like Medipix and advanced techniques of image reconstruction. In case that intra-operative approach is advantageous, like in direct observation of dental implants, also the size of the imaging...
The lateral spread of charge carriers under the influence of the electric field in a pixellated silicon detector hit by a heavy charged particle, such as a proton or an alpha-particle, causes a sharing of the charge between the electrodes and many pixels have a signal. The results of the charge sharing effect measured in the Medipix2 and Timepix pixel detectors of 300 mum thicknesses is shown as a...
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