论文标题
沙丘中微子检测器的时间和同步
Timing and Synchronization of the DUNE Neutrino Detector
论文作者
论文摘要
沙丘中微子实验远探测器的基准质量为40 kt。 O（1M）读数通道分布在四个10 KT模块上，需要相互同步O（10 ns）。整个系统需要相对于o（100 ns）的GPS时间同步。该系统需要可靠，简单且负担得起。时钟和同步信息使用基于占空比偏移键键合（DCSK）的协议在同一光纤上进行编码，并使用8B10B编码，以确保DC-BALANE。 DCSK的使用允许基于PLL的时钟生成器直接恢复时钟，而无需使用单独的时钟和数据恢复（CDR）设备。小型测试显示，相对于计时主的终点的定时抖动。
The DUNE neutrino experiment far detector has a fiducial mass of 40 kt. The O(1M) readout channels are distributed over the four 10 kt modules and need to be synchronized with respect to each other to a precision of O(10 ns). The entire system needs to be synchronized with respect to GPS time to O(100 ns). The system needs to be reliable, simple and affordable. Clock and synchronization information encoded on the same fibre using a protocol based on duty cycle shift keying (DCSK) with 8b10b encoding to ensure DC-balance. The use of DCSK allows the clock to be recovered directly by PLL based clock generators without needing to use a separate clock and data recovery (CDR) device. Small scale tests show a timing jitter at the endpoint of approximately 10 ps with respect to the timing master.
