Graph-based algorithm for the understanding of failures in the ATLAS infrastructure

Abstract The ATLAS Technical Coordination Expert System is a knowledge-based application which describes and simulates the experiment based on its components their relationships with differing levels of granularity but an emphasis general infrastructure. It facilitates sharing knowledge improves communication among experts different backgrounds domains expertise. developed software has become essential for planning interventions as it gives easily insight into consequences. Furthermore, also proven to be useful exploring most effective ways improve operation reliability by identifying points failure significant impact. underlying database more than 13,000 elements 89,000 them. combines information from diverse such detector control safety systems, gas water supplies, cooling, ventilation, cryogenics, electricity distribution. As recent addition, tool identify probable cause state been developed. This paper discusses graph-based algorithm currently implemented that shows behaviour parameters entered user. An example in form real event given demonstrates potential understanding major failures faster urgent situations.