Rehlich, K.

Paper	Title	Page
MOD004	Evolution of the FLASH DAQ System	37
	T. Wilksen, A. Agababyan, G. Grygiel, O. Hensler, R. Kammering, V. Kocharyan, L. M. Petrosyan, K. Rehlich, V. Rybnikov DESY, Hamburg
	The Data Acquisition System at the Free-Electron-Laser Hamburg (FLASH) has evolved since its implementation in 2005 into a reliable and versatile system used for accelerator operations and studies along with a multitude of different photon experiment users, recording about 14 TB in 2008 for experiments only. Recently the DAQ system has been successfully upgraded with new hardware to accommodate increasing demands of beamline experiments, upcoming R&D work at FLASH i.e. for the ILC, and to prepare for the upgrade of the FLASH facility this year. The design of the FLASH DAQ is based on a very scalable and extensible concept, recording all available data, processing and archiving it as well as providing an interface for the user to analyze their measurements. Several instances of the same DAQ system have been installed now in parallel to the existing ones to allow for a flexible and redundant configuration, adjusted to the needs of the different user communities. This paper describes the evolution of and experiences with the FLASH DAQ and highlights the key elements of its design to facilitate an expandable yet easily to duplicate system implementation.
	Slides
TUP035	JDDD in Action	164
	E. Sombrowski, P. Gessler, A. Petrosyan, K. Rehlich DESY, Hamburg J. M. Meyer ESRF, Grenoble
	During the last two years the storage ring PETRA at DESY has been widely rebuild (now called PETRA III), to become soon one of the most brilliant X-ray sources worldwide. The vacuum controls of this third generation light source have been implemented using DOOCS and TINE on the hardware level and jddd (Java DOOCS Data Display) on the GUI layer. jddd is a graphical editor for designing and running control system applications. It allows a simple creation of complex control panels with a rich set of ready-made components/widgets. The ongoing commissioning of PETRA III proved that jddd fits the requirements of good control applications in terms of stability, reliability and performance. Currently 4 different control system interfaces are implemented in jddd: DOOCS, TINE, TANGO and EPICS. Even mixing values of these control systems can be done, allowing an interoperability between the different worlds. That makes jddd interesting not only for DESY but also for other institutes. jddd is available as free software under the GNU General Public License (GPL). It is currently evaluated by various institutes like ESRF, PSI, Soleil, Trieste (using TANGO) and PSI, ITER, Cornell (using EPICS).
WEP045	A Pico-Second Stable Clock and Trigger Distribution System for the European XFEL	489
	P. Gessler, K. Rehlich DESY, Hamburg C. Bohm, A. Hidvegi Stockholm University, Stockholm
	For the operation of the European X-Ray Free Electron Laser (XFEL), a system wide synchronous low-jitter clock and precise, adjustable triggers must be generated and distributed throughout the 3.5 km long facility. Consumers are numerous diagnostics, controls, and experiments. Fast ADCs require the jitter of a distributed 1.3GHz clock to be in the order of a few pico seconds (RMS) and synchronized to the accelerating RF. Due to cable lengths, and the temperature dependence of the propagation speed, temperature drifts are a serious issue. Therefore a complex monitoring and compensation mechanism has been developed to minimize these effects. The hardware platform of the XFEL will be based on the new standard μTCA and ATCA. Therefore the timing is implemented as a AMC (Advanced Mezzanine Card) module that fits into both crate systems. A prototype of this new clock and trigger system has been developed and first measurements have shown, that the strong requirements can be fulfilled.
	Poster
THA006	New Hardware and Software Developments for the XFEL	641
	K. Rehlich DESY, Hamburg
	The European XFEL is planned to be commissioned in 2013. This is time enough to consider modern and adequate technologies. After an evaluation phase, State of the art μTCA and ATCA hardware were selected as the core platform for the project. Ethernet and PCIe are the central communication links. Full remote management, hot-swap capabilities as well as a redundant architecture are further key features of this new standard. Java was selected as the programming language for the client applications. Two new DOOCS tools, written in Java, were created: the so called jDTool and jddd. jDTool is a generic data browser with spread sheet and plot capabilities. jddd is a full featured, easy to use display editor to create flexible control system user interfaces. Both tools can communicate directly with DOOCS, Tine, Tango and EPICS. The experience with the new hardware platform and the new applications will be discussed.
FRA004	E-logbook Reloaded - or the Renovation of DESYs Electronic Logbook	931
	R. Kammering, K. Rehlich, J. Strampe DESY, Hamburg
	Heading towards the tenth anniversary of the DESYs electronic logbook, this paper outlines the various changes and improvements done to the electronic logbook since its first days. To satisfy and support the seeming never ending requests for copies of the electronic logbook form all over the world and to allow better maintainability, the original DESY e-logbook has undergone many changes. E.g. triggered the manageability of several dozens of e-logbook instances at once, the development of the so called "E-logbook Manager" application. But also many smaller improvements like replacing the old fashion navigation tree by a modern AJAX driven one, a "mail to experts" tool to easily post problems/info's to responsible persons or secure access methods to allow access to the e-logbooks from all over the world, have been made in the last years. As an next step a redesign of the login and security concepts is under development and will be presented.