核与粒子物理的实验装置和技术应用越来越多地使用大通道数的位置灵敏探测器。信号读出电子学已经成为位置灵敏探测器发展和应用的技术瓶颈。本项目将位置灵敏探测器信号读出电子学的关键技术提炼为“高集成度和高性能的大通道数能量信息读出和时间信息读出技术”，以自行提出的、已具有良好研究基础的线性TOT能量信号数字化新方法，和基于FPGA的高性能TDC设计技术为基础，深入开展“时间读出驱动的信号读出核电子学”技术及方法研究。本课题将能量信息读出和时间信息读出有机结合，在高集成度和高性能两方面满足大通道数探测器的应用需求。在促进核电子学学科发展的同时，项目所研制的TODT-ASIC芯片和FPGA-TDC芯片还要和位置灵敏闪烁探测器结合，研制出一种新型PET探测器模块和PET成像原理样机：一方面直接验证所研究的新技术，另一方面展现先进的读出电子学对探测器性能的显著提升，进而促进PET成像技术的发展。

Nowadays, more and more position-sensitive detectors with very high channel counts are employed in modern nuclear and particle research and application instruments. The traditional readout techniques of detectors have already become the bottleneck technique limiting the development and application of these detectors. This project refines the key techniques of the signal readout electronics for position-sensitive detectors as “a high integration, high performance, and large channel count energy information readout and timing information readout techniques”. Based on the solid research background of the new time-over-dynamic-threshold (TODT) nuclear signal digitization method and the time-to-digital convertor (TDC) design technique on FPGA, the project proposes to combine the energy readout and the time readout together as a subject of “the time-readout driven nuclear electronics”, which will be thoroughly investigated to satisfy the requirements of high integration and high measurement performance for high channel count detectors. Besides the research activities of the project are significant to the subject development of nuclear electronics, the designed TODT-ASIC and FPGA-TDC in the project will combine with a scintillation detector forming a novel PET detector module to evaluate the investigated new skills and demonstrate the promotion of detector performance by the advanced electronics as well. The prototype of the PET scanner built with these new detector modules will be very helpful for the PET imaging domain.