free-electron-laser

Paper	Title	Other Keywords	Page
MOX03	Switching the Jefferson Lab Accelerator Operations Environment from an HP-UX Unix-based to a PC/Linux-based Environment	controls, laser	7
	T. S. McGuckin Jefferson Lab, Newport News, Virginia
	The Jefferson Lab Accelerator Controls Environment (ACE) was almost uniformly based on an HP-UX Unix environment from 1987 through the summer of 2004. During this period the ACE Control Room underwent a major renovation which included introducing Redhat Enterprise Linux machines, first as specialized process servers and then gradually as general login servers. As computer programs and scripts required to run the accelerator were modified, and inherent problems with the HP-UX platform compounded, more development tools became available for use with Linux and the ACE Control Room began to be converted over to Linux. In May 2008 the last HP-UX Unix login machine was removed from the ACE Control Room, leaving only a few Unix-based remote-login servers still available. This presentation will explore the process of converting an operational Control Room environment from the HP-UX to Linux platform as well as the many hurdles that had to be overcome throughout the transition period (including a discussion of why the process took over four years). It will conclude with a current assessment of the change-over status as well as an examination of what future steps will complete the project.
	Slides
TUZ02	AMS - Alarm Management System	controls, laser, electron	70
	M. R. Clausen, J. Hatje, M. Moeller, H. R. Rickens DESY, Hamburg
	Alarm management is a mandatory component of todays control systems. The widely distributed process controls for the x-ray free electron laser facility XFEL being build at DESY in Hamburg, Germany will increase the demands for a reliable and functional alarm management system. Todays alarm tools like the EPICS alarm handler may be used for alarm display but they lack management functionalities. The new alarm management system comprises all levels of alarm handling: Collection, store and forward, display as tables and trees, persistent store, archive, archive retrieval, filtering, actions behind filters and distributors. Distributors are issuing actions in the form of (JMS) messages, GSM-SMS or Email. The new alarm system is fully integrated into the CSS framework including views and configuration editors. Alarms as well as log messages are handled by a set of redundant ActiveMQ servers which implement the Java Message Service (JMS) specified by SUN. This paper will describe the whole alarm management system which is based on open source software and independent from control system specific implementations.
	Slides