Compact radiation detector
| DWPI Title: Apparatus for detecting alpha and beta radiation, has electronic signal-processing circuit including preamplifier for jointly processing pulses due to photon-generated input and pulses due to carrier-generated input |
| Abstract: An apparatus for detecting radiation is provided. In embodiments, at least one sensor is disposed on a surface of a wafer-like substrate. At least one sensor medium is fixed relative to the substrate, optically or electrically coupled to the sensor, and separated from the sensor by no more than the substrate thickness. An electronic signal-processing circuit is connected to the sensor and configured to produce an output when the sensor is stimulated by a product of an interaction between the sensor medium and impinging radiation. The sensor is configured to collect, from the sensor medium, charge and/or light produced within the sensor medium by interactions with impinging radiation. |
| Use: Apparatus for detecting alpha and beta radiation in different applications e.g. medical imaging applications, industrial health monitoring applications, and national security applications. |
| Advantage: The apparatus reduces distance between electrodes to increase detector sensitivity, while reducing drift time before radiation-induced charges are collected and reduce an amount of charge. The apparatus ensures that monolithic integration of a readout circuitry can reduce capacitance and noise associated with readout of the charge collected from the reaction particle ion trails of detected neutrons. |
| Novelty: The apparatus has an optical sensor fixed on a surface of a wafer-like substrate containing integrated circuitry. The optical sensor is optically coupled to a sensor medium (1020) to be impinged by photons generated by radiation interactions within the sensor medium. An electric charge-collection electrode is in contact with the sensor medium to receive charge carriers generated by radiation interactions within the sensor medium. An electronic signal-processing circuit is electrically connected to the optical sensor and to the charge-collection electrode to receive a photon-generated input from the optical sensor. The electronic signal-processing circuit includes a preamplifier integrated on the active surface of the wafer-like substrate. The electronic signal-processing circuit jointly processes pulses due to the photon-generated input and pulses due to the carrier-generated input. The optical sensor is a photodiode. The sensor medium is gas, liquefied gas and solid. |
| Filed: 2/27/2014 |
| Application Number: US14192595A |
| Tech ID: SD 11672.0 |
| 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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