Paper | Title | Page |
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WEPGF126 | Prototype of White Rabbit Network in LHAASO | 999 |
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Funding: Key Laboratory of Particle & Radiation Imaging, Open Research Foundation of State Key Lab of Digital Manufacturing Equipment & Technology in Huazhong Univ. of Science & Technology Synchronization is a crucial concern in distributed measurement and control systems. White Rabbit provides sub-nanosecond accuracy and picoseconds precision for large distributed systems. In the Large High Altitude Air Shower Observatory project, to guarantee the angular resolution of reconstructed air shower event, a 500 ps overall synchronization precision must be achieved among thousands of detectors. A small prototype built at Yangbajin, Tibet, China has been working well for a whole year. A portable calibration node directly synced with the grandmaster switch and a simple detectors stack named Telescope are used to verify the overall synchronization precision of the whole prototype. The preliminary experiment results show that the long term synchronization of the White-Rabbit network is promising and 500 ps overall synchronization precision is achievable with node by node calibration and temperature correction. |
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Poster WEPGF126 [1.233 MB] | ||
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