Title :
Multi-Processor based Fast Data Acquisition for a Free Electron Laser and Experiments
Author :
Agababyan, A. ; Asova, G. ; Dimitrov, G. ; Grygiel, G. ; Fominykh, B. ; Hensler, O. ; Kammering, R. ; Petrosyan, L. ; Rehlich, K. ; Rybnikov, V. ; Trowitzsch, G. ; Winde, M. ; Wilksen, T.
Author_Institution :
DESY, Hamburg
fDate :
April 29 2007-May 4 2007
Abstract :
FLASH (Free electron LASer in Hamburg) at DESY is a user facility with laser-like radiation source in the VUV and soft X-ray range. It is also a pilot facility for the future XFEL. A fast data acquisition system to support the accelerator operation and the user experiments was developed. The system collects data from hundreds of ADC channels in the range of 1M up to 2G samples per second. In addition it allows collecting images from digital video cameras. All the data are collected in a shared memory of a central multi-processor computer. Several processes are used to calculate e.g. the orbit, energy or photon flux, or are used as feedback loops to improve the stability of the linac. A long time archiving of the collected data from the accelerator and from the FEL experiments on a 24 TB disk and finally on a tape is provided. The whole system is integrated in the DOOCS control system of FLASH.
Keywords :
X-ray lasers; accelerator control systems; data acquisition; free electron lasers; high energy physics instrumentation computing; linear accelerators; multiprocessing systems; nuclear electronics; ADC channels; DESY; DOOCS control system; FLASH; Free electron LASer in Hamburg; VUV range; XFEL; central multiprocessor computer; digital video cameras; feedback loops; laser-like radiation source; linac; multiprocessor based fast data acquisition; photon flux; shared memory; soft X-ray range; Control systems; Data acquisition; Digital cameras; Feedback loop; Free electron lasers; Linear particle accelerator; Orbital calculations; Stability; Video sharing; X-ray lasers; Accelerator control systems; Data acquisition; Free Electron Laser; Software;
Conference_Titel :
Real-Time Conference, 2007 15th IEEE-NPSS
Conference_Location :
Batavia, IL
Print_ISBN :
978-1-4244-0866-5
Electronic_ISBN :
978-1-4244-0867-2
DOI :
10.1109/RTC.2007.4382853
