Compact radiation detector
| DWPI Title: Radiation detection apparatus has sensor medium that is disposed partially within cavity, electrode arrangement that collects charge generated within sensor medium by interactions with impinging radiation and drifted through sensor medium |
| Abstract: Apparatus for detecting radiation includes a sensor medium disposed within a cavity in a silicon-based substrate. An electrode arrangement is provided for collecting charge generated within the sensor medium by interactions with impinging radiation and drifted through the sensor medium. The electrode arrangement is constituted, in part, by a silicon portion of the substrate that is doped to increase its electrical conductivity and that defines part of the cavity wall. |
| Use: Radiation detection apparatus. |
| Advantage: Improves the rejection of gamma-ray-induced background noise, reduces the total helium-3 requirement, and provides for increased spatial resolution and directional discrimination. Reduces stresses and facilitates mechanical alignment by an optically transparent underfill. |
| Novelty: The apparatus has a sensor medium which is disposed partially within a cavity in the silicon or silicon or silicon-on-insulator (SOI) substrate. An electrode arrangement collects charge generated within the sensor medium by interactions with impinging radiation and drifted through the sensor medium. The electrode arrangement has a silicon charge-collection electrode. The silicon charge-collection electrode is a silicon portion of the substrate that is doped to increase its electrical conductivity and that constitutes a wall portion of the cavity. The electrode arrangement produces an output signal that is detectable by an electronic signal-processing circuit when the sensor is stimulated by a product of an interaction between the sensor medium and impinging radiation. |
| Filed: 3/13/2018 |
| Application Number: US15920113A |
| Tech ID: SD 11672.1 |
| 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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