Next generation web based live data monitoring for W7-X

Highlights: •An architecture for distribution and visualization of life data at W-7X is described. •An implementation based on web technologies allows live data monitoring in a browser. •The implementation was used successfully to monitor W7-X operational phase OP 1.2a. •The implementation allowed global partners to remotely participate via W7-X extranet. •The implementation allowed monitoring of machine state, measurement data, videos. -- Abstract: The Wendelstein 7-X stellarator experiment by its nature has the need for continuous live data monitoring. New technical and security related requirements make a redesign of the monitoring architecture, originating in the first years of the century, necessary. Besides that, new developments in technologies, user interfaces and generally IT supported work flows, generate new expectations at the system user level, including live remote participation. To answer these upcoming demands, the CoDaC team at Wendelstein 7-X has designed a new architecture for monitoring data management, distribution and observation. As a very flexible user interface, a client web application was developed, utilizing modern technologies like WebSockets and WebGL for high performance live data visualization. A touch friendly interface design offers both broad support for new access tools (like tablets, smart phones, smart TV sets) and a very flexible and intuitive work flow. This paper describes the new MonA-LISA monitoring architecture and gives a short overview over the options provided by the web based monitoring client.