基于FELIX的微结构气体探测器读出电子学系统设计

微结构气体探测器因其精度高、面积大等优点，在粒子物理实验中得到了非常广泛的应用。微结构气体探测器的未来应用将面临ASIC种类多、通道数多、数据量大等问题，给读出电子学系统的设计带来了很大的挑战，已成为微结构气体探测器进一步发展应用的瓶颈。FELIX系统具有数据带宽大、通道数多等特点，可很好解决这一问题。基于FELIX的电子学系统由完成探测器信号数字化的前端电子学模块、完成数据汇总的GBT模块、完成数据读出的FELIX系统、完成数据处理的数据处理终端组成，可完成10 240路半数字通道读出或4 096路模拟通道读出。该系统与Micromegas探测器一起实现宇宙线径迹探测，验证了该系统的通用性和兼容性，为微结构气体探测器的应用需求提供了一个通用的解决方案。

Research on FELIX-based Readout Electronics System for Micro-pattern Gas Detector

Micro-pattern gas detectors (MPGDs) have been applied in many fields. With the rapid development of MPGDs, readout electronics system has been a bottleneck to the further application of MPGDs. This paper presents a FELIX-based scalable readout electronics system facing the problem. It consists of pre-amplifier modules, a FELIX which acts as a data router between front-end electronics and DAQ system, 2 GBT (gigabit transceiver) modules based on FPGA which acts as a bridge between chip carrier and FELIX, and chip carriers whose main function is detector signal conditioning and digitization. The prototype system has 10 240 electronic channels applying semi-digital ASIC MICROROC and 4 096 electronic channels applying analogue ASIC AGET. Results of joint tests with Micromegas indicate the system works well with different kinds of chip carriers. The design offers a flexible readout solution for different application scenarios of MPGDs.