Khasbulatov, D.

Paper	Title	Page
TUP021	The LHC Post Mortem Analysis Framework	131
	M. Zerlauth, O. O. Andreassen, V. Baggiolini, A. Castaneda, R. Gorbonosov, D. Khasbulatov, H. Reymond, A. Rijllart, I. Romera Ramirez, N. Trofimov CERN, Geneva
	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. This paper recalls the requirements for the LHC Beam Post Mortem System and the necessity for highly reliable Post Mortem Data collection mechanisms. It describes in detail the redundant architecture for data collection as well as the chosen implementation of a multi-level analysis framework, allowing for automated analysis and qualification of a beam dump event based on expert provided analysis modules. It concludes with an example of the data taken during first beam tests in September 2008 with a first version of the system.
	Poster
THC003	A Sequencer for the LHC Era	670
	V. Baggiolini, R. Alemany-Fernandez, R. Gorbonosov, D. Khasbulatov, M. Lamont CERN, Geneva
	The Sequencer is a high level software application that helps operators and physicists control the LHC. It interfaces with all LHC sub-systems and orchestrates the countless tasks needed to drive the machine through the different LHC cycles. It is a core part of the control system and one of the key elements for the successful commissioning and operation of the LHC. The sequencer was designed and implemented using some of the most recent Java features. It has a 3-tier architecture based on the Spring Framework, and is highly modular and extensible. Modules can be exchanged in order to adapt the sequencer to specific requirements. For instance, for hardware commissioning, a different task execution module is used than for beam commissioning. Developers can contribute tasks they need in their sequences. The sequencer could be packaged as a stand-alone tool to be used in other HEP Labs. The paper mainly describes technical aspects of the sequencer. Amongst others, it discusses the different technologies that were evaluated during the design phase (e.g. Java compiler API, Java remote debugging API, OSGi, etc.) and explains why they were retained or discarded in the final solution.