多反射飞行时间质量分析器是最近几年发展起来的新型实验装置之一。离子多次往返运动，延长了飞行路径，较传统的飞行时间质谱仪而言，其分辨率更高。本项目将研制一套多反射飞行时间质量分析器，主要由核心反射电极、飞行时间探测器和布拉德伯里-尼尔森离子门组成。其主要参数为：核心部分束线长度小于800mm，抑制比达到10000，质量分辨率大于100000。不仅可以将其用于短寿命核素的直接精确质量，而且可以实现目标核的快速选择。

Multi-reflection time-of-flight mass analyzer is one of the new experimental devices developed in recent years. As the flight path extended several orders of magnitude as the analyzer is traversed many times by the ions, it allows achieving higher mass resolving power than the conventional time-of-flight mass spectrometry. This project will develop a set of multi-reflection time-of-flight mass analyzer consisted of several reflection core electrodes, a time-of-flight detector and a Bradbury-Nielsen gate (BNG). The beam line length of the core section will be shorter than 800 mm, the suppression ratios up to 10000 and the mass resolving power over 100000. It can be used not only for direct high-accuracy mass measurements for short lived nuclides, but also for the fast selection of the target ones.