SOLID STATE ANGER TYPE GAMMA CAMERA

我们提出了一种新型的固态光电探测器来取代昂热闪烁相机中的光电倍增管。新的探测器将基于硅漂移光电探测器（SDP）的结构。这项技术优于过去用来实现这一目标的其他技术。模拟和初步测量结果表明，基于该技术的闪烁相机在140keV下可以实现1-2mm的固有空间分辨率和7-10% FWHM的能量分辨率。在第一阶段，我们将探讨实现这些目标的可行性。将进行模拟研究，以研究各种光电探测器参数对可实现的相机性能的影响。基于这些研究，我们将制作光电探测器，并设计、构建和评估基于0.5 - 1 cm2光电探测器和闪烁晶体（如CsI（Tl）或NaI(Tl)）的小面积（约100 cm2） Anger相机。在第二阶段，我们将制造并演示一个完整的愤怒相机原型，其视野直径约为30厘米，由新的光电探测器构建。拟议的商业应用：该技术有可能取代与闪烁晶体结合使用的光电倍增管，用于伽马射线光谱、核医学成像、光子计数等。这些领域仪器的整体市场价值数十亿美元。这项技术所涉及的市场份额高达数亿美元。

We propose to develop a new type of solid state photodetector to replace the photomultiplier tube in Anger-type scintillation cameras. The new detectors will be based on the silicon drift photodetector (SDP) structure. This technology is superior to other technologies that have been used to attempt to accomplish this goal in the past. Simulations and preliminary measured results with this new technology suggest that intrinsic spatial resolution of 1-2mm and energy resolution of 7-10% FWHM at 140keV are possible in a scintillation-camera based on the new technology. In Phase I we will explore the feasibility of achieving these goals. Simulation studies will be performed to investigate the effects of the various photodetector parameters on the achievable camera performance. Based on these studies we will fabricate the photodetectors and design, construct and evaluate small-area ( approximately 100 cm2) Anger cameras based on 0.5 - 1 cm2 photodetectors and scintillation crystals such as CsI(Tl) or NaI(Tl). In Phase II we will fabricate and demonstrate a complete anger camera prototype with a approximate 30cm diameter field of view constructed with the new photodetectors. PROPOSED COMMERCIAL APPLICATIONS: This technology has potential for replacement of photomultiplier tubes used in conjunction with scintillation crystals for gamma-ray spectroscopy, nuclear medical imaging, photon counting, etc. The overall market for the instrumentation in these areas is in the billions of dollars. The portion of this market addressed by this technology is in the hundreds of millions of dollars.