Post Mortem

The LHC with its unprecedented complexity and criticality of beam operation will need thorough analysis of data taken from systems such as power converters, interlocks and beam instrumentation during events like magnet quenches and beam loss. The causes of beam aborts or in the worst case equipment damage have to be revealed to improve operational procedures and protection systems. The correct functioning of the protection systems with their required redundancy has to be verified after each such event. Post mortem analysis software for the control room has been prepared with automated analysis packages in view of the large number of systems and data volume. 

Analysis of transient data recorded by the different equipment systems of the LHC requires a powerful and reliable data collection as well as an efficient and accurate analysis for the thousands of PM data buffers arriving at the system in the case of beam dumps. As the domain knowledge of equipment experts is a key factor to the analysis of the data, they account responsible whenever possible for the implementation of the analysis modules, whereas the LHC Post Mortem Framework orchestrates the analysis flow and provides all necessary infrastructure to the analysis modules (such as read/write APIs for PM data, database/reference access, analysis configurations, etc.).  

 


Documents:

The LHC Post Mortem Analysis Framework (ICALEPCS 2009)

Smooth Migration of CERN Post Mortem Service to a horizontally scalable service (ICALEPCS 2009)

Plans for renovation of the Post Mortem infrastructure (Presentation from TE-MPE-TM 15/09/2016)

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