Time error accumulation in a hierarchical time and clock distribution network with deterministic optical links
Abstract Accurate clock and time distribution is a key requirement for self-triggered streaming data acquisition in the CBM experiment. This distribution is handled by the Timing and Fast Control (TFC) system by clock forwarding and broadcasting the common time over latency-deterministic optical lin...
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Published in | Journal of instrumentation Vol. 19; no. 3; p. C03014 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Bristol
IOP Publishing
01.03.2024
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Subjects | |
Online Access | Get full text |
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Summary: | Abstract
Accurate clock and time distribution is a key requirement for self-triggered streaming data acquisition in the CBM experiment. This distribution is handled by the Timing and Fast Control (TFC) system by clock forwarding and broadcasting the common time over latency-deterministic optical links in a hierarchical FPGA network. The point-to-point optical connections are served by the latency-optimized GBT-FPGA core, which has been developed at CERN. In the presented work, the performance of GBT-FPGA links for time and clock distribution in a scaled TFC system with multiple hops and endpoints has been investigated. |
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ISSN: | 1748-0221 1748-0221 |
DOI: | 10.1088/1748-0221/19/03/C03014 |