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arXiv 1806.09249physics.ins-deteess.SP
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CSNS背n白中子装置的T0扇出

T0 Fan-out for Back-n White Neutron Facility at CSNS

X. Y. Ji, P. Cao, T. Yu, L. K. Xie, X. R. Huang, Q. An, H. Y. Bai, J. Bao, Y. H. Chen, P. J. Cheng, Z. Q. Cui, R. R. Fan, C. Q. Feng, M. H. Gu, Z. J. Han, G. Z.… 展开作者

X. Y. Ji, P. Cao, T. Yu, L. K. Xie, X. R. Huang, Q. An, H. Y. Bai, J. Bao, Y. H. Chen, P. J. Cheng, Z. Q. Cui, R. R. Fan, C. Q. Feng, M. H. Gu, Z. J. Han, G. Z. He, Y. C. He, Y. F. He, H. X. Huang, W. L. Huang, X. L. Ji, H. Y. Jiang, W. Jiang, H. Y. Jing, L. Kang, B. Li, L. Li, Q. Li, X. Li, Y. Li, R. Liu, S. B. Liu, X. Y. Liu, G. Y. Luan, Y. L. Ma, C. J. Ning, J. Ren, X. C. Ruan, Z. H. Song, H. Sun, X. Y. Sun, Z. J. Sun, Z. X. Tan, J. Y. Tang, H. Q. Tang, P. C. Wang, Q. Wang, T. F. Wang, Y. F. Wang, Z. H. Wang, Z. Wang, J. Wen, Z. W. Wen, Q. B. Wu, X. G. Wu, X. Wu, Y. W. Yang, H. Yi, L. Yu, Y. J. Yu, G. H. Zhang, L. Y. Zhang, J. Zhang, Q. M. Zhang, Q. W. Zhang, X. P. Zhang, Y. T. Zhao, Q. P. Zhong, L. Zhou, Z. Y. Zhou, K. J. Zhu

备注：
3 pages, 6 figures, the 21st IEEE Real Time Conference
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摘要：

中国空间中子源（CSNS）的Back-n白中子装置的主要物理目标是测量核数据。中子能量是测量核数据的重要参数之一。飞行时间法（TOF）用于获得中子的能量。将质子束团撞击厚钨靶的时刻作为飞行时间的起始点。由CSNS加速器产生的T0信号表示该开始时间。此外，T0信号还用作触发读出电子器件的门控信号。显然，T0的定时精度直接影响TOF的测量精度，并控制运行或读出电子设备。本文提出了CSNS的Back-n白中子装置的T0扇出。来自CSNS加速器的T0信号通过长电缆分别扇出到两个地下实验站。为了保证定时精度，T0信号被调理为具有良好的信号边沿。此外，信号预加重和均衡技术被用来改善信号质量后，T0被传输到长电缆约100米的长度。实验结果表明，T0扇出效果良好，T0信号在100 m范围内仍保持较好的时间分辨率，标准差为25 ps。完全满足TOF测量的精度要求。

英文摘要：

the main physics goal for Back-n white neutron facility at China Spallation Neutron Source (CSNS) is to measure nuclear data. The energy of neutrons is one of the most important parameters for measuring nuclear data. Method of time of flight (TOF) is used to obtain the energy of neutrons. The time when proton bunches hit the thick tungsten target is considered as the start point of TOF. T0 signal, generated from the CSNS accelerator, represents this start time. Besides, the T0 signal is also used as the gate control signal that triggers the readout electronics. Obviously, the timing precision of T0 directly affects the measurement precision of TOF and controls the running or readout electronics. In this paper, the T0 fan-out for Back-n white neutron facility at CSNS is proposed. The T0 signal travelling from the CSNS accelerator is fanned out to the two underground experiment stations respectively over long cables. To guarantee the timing precision, T0 signal is conditioned with good signal edge. Furthermore, techniques of signal pre-emphasizing and equalizing are used to improve signal quality after T0 being transmitted over long cables with about 100 m length. Experiments show that the T0 fan-out works well, the T0 signal transmitted over 100 m remains a good time resolution with a standard deviation of 25 ps. It absolutely meets the required accuracy of the measurement of TOF.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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