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Forck, P.

Paper Title Page
TUP002 Performance Tests of Digital Signal Processing for GSI Synchrotron BPMs 79
  • K. Lang, P. Forck, T. Hoffmann, P. Kowina, U. Rauch
    GSI, Darmstadt
  • G. JanÅ¡a
    Cosylab, Ljubljana
  The Beam Position Monitoring System at GSI heavy ion synchrotrons consists of twelve stations. Each of the four BPM plates is connected to a Libera Hadron unit from I-Tech Company for digitization and position calculation. The raw data of one BPM sampled by 125 MS/s with 14 Bit ADCs are reduced to about 20 MB/s by the onboard FPGA, resulting in a bunch-by-bunch position readout. In addition, different timing signals with various requirements are used to verify the functionality of the FPGA algorithms. For a closed orbit measurement, the data of all twelve Liberas have to be read in parallel. For communication, the Xilinx Rocket IOs is used, that allows up to 1GBit/s data output. Over a dedicated network, the data are merged for further usage on a high performance PC. We describe the general architecture and present first performance tests.  
WEP006 BeamView - A Data Acquisition System for Optical Beam Instrumentation 180
  • R. Haseitl, C. A. Andre, F. Becker, P. Forck
    GSI, Darmstadt
  At the GSI accelerator facility, several optical beam instrumentation devices for transversal profile measurement are installed. Their readout is done with FireWire CCD cameras attached to a small embedded device, specialized for image processing tasks (National Instruments Compact Vision System 1456). Here a LabView application preprocesses the images based on user requests. The resulting data (e.g. projections, histograms, compressed or original images) is sent over ethernet to a Windows or Linux PC, reaching frame rates above 30fps at VGA resolution. Using C++ with Qt libraries for networking and GUI purposes, platform independence without source code modification is achieved. In this paper we present the system components and software design to control CCD cameras and various other devices with an easy-to-use graphical user interface for machine operators.  
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