SonicMQ has been used by CERN from the early days. They started developing the architecture on SonicMQ 2000.1. The deployment platfrom is OC4J and currently they have 2 projects running. The 2 projects are called TIM (Technical Infrastructure Monitoring) and LASER.
TIM is responsible for the monitoring and reporting of alerts triggered by malfunctioning smoke detectors. LASER is resposible for the monitoring of the particle accelerator's state and event display. Note that shutdown during malfunction is managed entirely at the hardware level.