Performance results of the first White Rabbit installation for CNGS time transfer

2012 IEEE International Symposium on Precision Clock Synchronization for Measurement, Control and Communication Proceedings Pub Date : 2012-10-22 DOI:10.1109/ISPCS.2012.6336610

M. Lipinski, T. Wlostowski, J. Serrano, P. Alvarez, J. D. Gonzalez Cobas, A. Rubini, P. Moreira

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引用次数: 44

Abstract

This paper describes the long-term performance of White Rabbit (WR) based time and frequency transfer in the systems deployed at CERN and Gran Sasso National Laboratory. WR is a new technology based on IEEE 1588-2008 and Synchronous Ethernet which allows for sub-nanosecond accuracy and picosecond precision of synchronization in an Ethernet-based network. The first installation of WR is used in the CERN Neutrino to Gran Sasso (CNGS) project to transfer the Coordinated Universal Time (UTC) from a Global Positioning System (GPS) receiver to the underground extraction/detection points. The data collected during the system operation is used to evaluate its performance. Additionally, the performance in varying temperature conditions is verified with tests in a climatic chamber. We evaluate time transfer by measuring the offset between the time reference and the time receiver (WR Node). The stability of the transfered frequency is evaluated by analyzing the Allan Deviation (ADEV) and the Maximum Time Interval Error (MTIE).

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首次安装白兔进行CNGS时间传递的性能结果

本文描述了在欧洲核子研究中心和格兰萨索国家实验室部署的系统中基于白兔(WR)的时间和频率传输的长期性能。WR是一种基于IEEE 1588-2008和同步以太网的新技术，它允许在基于以太网的网络中实现亚纳秒精度和皮秒精度的同步。第一个WR装置用于CERN中微子到格兰萨索(CNGS)项目，将协调世界时(UTC)从全球定位系统(GPS)接收器传输到地下提取/检测点。系统运行过程中收集的数据用于评估系统的性能。此外，在不同温度条件下的性能通过在气候室中的测试进行验证。我们通过测量时间参考点和时间接收器(WR节点)之间的偏移量来评估时间传递。通过分析传输频率的艾伦偏差(ADEV)和最大时间间隔误差(MTIE)来评价传输频率的稳定性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2012 IEEE International Symposium on Precision Clock Synchronization for Measurement, Control and Communication Proceedings

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