Large Scale Messaging with ActiveMQ for Particle Accelerators at CERN

Felix Nikolaus Ehm, CERN

CERN, the international organization for nuclear research based in Geneva runs one of the largest particle accelerator infrastructure in the world including the youngest and most known Large Hadron Collider (LHC). This presentation will be on how ActiveMQ is used since 2005 for the accelerator Controls System to transport mission critical data reliably to high-level control/monitoring/alarm applications enabling a 24×7×365 operation for these machines. Currently single and clustered brokers are deployed to satisfy the very broad diversity of messaging patterns, e.g. large messages low rate (2MBytes/sec) to small messages high frequency (345M messages/day).