Fig. 1. separation power of TOF system with different time resolution, flight distance L = 8 m. 几种不同时间分辨飞行时间谱仪系统的 鉴别能力, 飞行距离L = 8 m

Fig. 2. The structure diagram of MRPC.MRPC探测器结构示意图

Fig. 3. Structure and picture of STAR-TOF MRPC.STAR-TOF MRPC结构及照片

Fig. 4. Picture of STAR-TOF tray.STAR-TOF tray集成照片

Fig. 5. Schematic of time slewing.时间游走原理图

Fig. 6. Slewing correction of MRPC to improve time precision.对MRPC的时间幅度信号进行校正, 以修正定时误差

Fig. 7. The PID of STAR-TOF.STAR-TOF的粒子鉴别图

Fig. 8. The top two panels show the dE/dx of charged particles as a function of mass measured by the TOF system; The bottom panel shows the mass distribution of charge particles. The mass of antimatter helium-4 nucleus is 3.73 GeV/c². 18 antimatter helium-4 nucleus are discriminated from around 500 billion tracks generated by one billion collisions. 上图和中图是通过STAR-TOF测得的带电粒子质量和能量损失的二维图; 下图是带电粒子质量的一维图, 反氦4核的质量等于3.73 GeV/c². 利用飞行时间谱仪, 在10亿次碰撞产生的5000亿条径迹中清晰地分辨出18个反氦4物质

Fig. 9. Measured efficiency and time resolution of MRPC change with particle rate.测试得到的MRPC探测效率和时间分别随粒子计数率的变化^[15]

Fig. 10. The structure of CBM-TOF.CBM-TOF结构

Fig. 11. Picture of MRPC3a.MRPC3a探测器照片

Fig. 12. CBM-TOF module is consisted of 5 MRPC counters and related electronics.由5个MRPC和相应电子学组成的飞行时间探测器模块

Fig. 13. Time resolution, efficiency and cluster size of MRPC3a at different threshold of PADI.不同PADI阈值下, MRPC3a探测器的时间分辨, 探测效率和簇大小

Fig. 14. High rate MRPC were produced at Miyun manufacture base of NUCTECH Ltd.同方威视公司密云生产车间正在进行高计数率MRPC的批量生产

Fig. 15. The PID of STAR-eTOF.STAR-eTOF的粒子鉴别

Fig. 16. High resolution MRPC and read out electronics.高时间分辨MRPC及读出电子学

Fig. 17. The time point of particle arriving at MRPC can be obtained from pulse shape. 粒子到达MRPC的时间点 可以由信号波形前沿得到

Fig. 18. The structure diagram of LSTM network used for time reconstruction of MRPC.用于MRPC时间重建的LSTM网络架构

Fig. 19. Simulated efficiency and time resolution of MRPC change with electric field in the gas gap. It can be seen the time resolution reconstructed with LSTM network is better than with slewing correction.模拟得到MRPC探测效率和时间分辨随气隙场强的变化, 可以看出, 采用LSTM网络法重建出的时间分辨比时幅校正得到结果要好

Fig. 20. Time spectrum of MRPC in cosmic test analyzed with LSTM network.采用LSTM网络方法分析得到MRPC的测试时间谱

Table 1. Performance of three generation MRPC TOF.

Table 2. The performance of low resistive glass.