Multiple-mode radiation detector
| DWPI Title: Multiple-mode radiation detector apparatus for use in medical imaging, has sensor medium placed within cavity in silicon substrate, electrode arrangement comprising electrode formed on substrate, and photodetector attached to substrate |
| Abstract: An apparatus for detecting radiation is provided. In embodiments, at least one sensor medium is provided, of a kind that interacts with radiation to generate photons and/or charge carriers. The apparatus also includes at least one electrode arrangement configured to collect radiation-generated charge from a sensor medium that has been provided. The apparatus also includes at least one photodetector configured to produce an electrical output in response to photons generated by radiation in such a sensor medium, and an electronic circuit configured to produce an output that is jointly responsive to the collected charge and to the photodetector output. At least one such electrode arrangement, at least one such photodetector, and at least one such sensor medium are combined to form an integral unit. |
| Use: Multiple-mode radiation detector apparatus for use in medical imaging, industrial health monitoring and national security. |
| Advantage: The apparatus reduces the distance between electrodes, thus increasing detector sensitivity by reducing drift time before the radiation-induced charges, and hence reducing the amount of charge that is lost to recombination. The apparatus allows monolithic integration of a readout circuitry to reduce the capacitance, so that the noise associated with readout of the charge is collected from the reaction particle ion trails of detected neutrons. |
| Novelty: The apparatus has a photodetector for producing an electrical output in response to photons generated by radiation in a sensor medium. An electronic circuit produces an output that is jointly responsive to collected charge and photodetector output. The electrode arrangement, a photodetector and the sensor medium form an integral unit. The sensor medium is placed within a cavity in a silicon or silicon-on-insulator substrate. The electrode arrangement comprises electrode formed on the substrate, and the photodetectors are attached to the substrate. |
| Filed: 2/27/2014 |
| Application Number: US14192688A |
| Tech ID: SD 12766.0 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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