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| TFT-Based Active Pixel Sensors for Large Area Thermal Neutron Detection | |
| [null] | |
| 出版年 | 2014 |
| 学位授予单位 | Kunnen, George Rogers (Author), Allee, David (Advisor), Garrity, Douglas (Committee member), Gnade, Bruce (Committee member), Holbert, Keith (Committee member), Arizona State University (Publisher) |
| 英文摘要 | abstract: Due to diminishing availability of 3He, which is the critical component of neutron detecting proportional counters, large area flexible arrays are being considered as a potential replacement for neutron detection. A large area flexible array, utilizing semiconductors for both charged particle detection and pixel readout, ensures a large detection surface area in a light weight rugged form. Such a neutron detector could be suitable for deployment at ports of entry. The specific approach used in this research, uses a neutron converter layer which captures incident thermal neutrons, and then emits ionizing charged particles. These ionizing particles cause electron-hole pair generation within a single pixel's integrated sensing diode. The resulting charge is then amplified via a low-noise amplifier. This document begins by discussing the current state of the art in neutron detection and the associated challenges. Then, for the purpose of resolving some of these issues, recent design and modeling efforts towards developing an improved neutron detection system are described. Also presented is a low-noise active pixel sensor (APS) design capable of being implemented in low temperature indium gallium zinc oxide (InGaZnO) or amorphous silicon (a-Si:H) thin film transistor process compatible with plastic substrates. The low gain and limited scalability of this design are improved upon by implementing a new multi-stage self-resetting APS. For each APS design, successful radiation measurements are also presented using PiN diodes for charged particle detection. Next, detection array readout methodologies are modeled and analyzed, and use of a matched filter readout circuit is described as well. Finally, this document discusses detection diode integration with the designed TFT-based APSs. Dissertation/Thesis Doctoral Dissertation Electrical Engineering 2014 |
| 英文关键词 | Electrical engineering Nuclear physics Active Pixel Sensor Conversion Layer Neutron Detector Thin Film Transistor |
| 语种 | 英语 |
| URL | http://hdl.handle.net/2286/R.I.25837 |
| 来源机构 | Arizona State University |
| 资源类型 | 学位论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/248334 |
| 推荐引用方式 GB/T 7714 | [null]. TFT-Based Active Pixel Sensors for Large Area Thermal Neutron Detection[D]. Kunnen, George Rogers (Author), Allee, David (Advisor), Garrity, Douglas (Committee member), Gnade, Bruce (Committee member), Holbert, Keith (Committee member), Arizona State University (Publisher),2014. |
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