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ELETTRA

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CT02 First Commissioning Results of the ELETTRA Transverse Multi-Bunch Feedback instrumentation, diagnostics, feedback 66
 
  • D. Bulfone, C.J. Bocchetta, R. Bressanutti, A. Carniel, G. Cautero, A. Fabris, A. Gambitta, D. Giuressi, G. Loda, M. Lonza, F. Mazzolini, G. Mian, N. Pangos, R. Sergo, V. Smaluk, R. Tommasini, L. Tosi, L. Zambon
    ELETTRA, Sincrotrone Trieste, Trieste, Italy
  • M. Dehler, R. Uršič
    PSI, Paul Scherrer Institut, Villigen, Switzerland
  A wide-band bunch-by-bunch Transverse Multi-Bunch Feedback, developed in collaboration with the Swiss Light Source (SLS), has been installed at ELETTRA. After a description of the main hardware/software components, the first commissioning results and the present status of the system are given.  
 
PM06 The Low Gap BPM System at ELETTRA: Commissioning Results instrumentation, diagnostics, synchrotron, closed-orbit, pick-up 174
 
  • M. Ferianis, R. De Monte
    ELETTRA, Sincrotrone Trieste, Trieste, Italy
  Two Low Gap BPMs have been successfully installed at ELETTRA and have now completed the commissioning phase. The main purpose of these new devices is to provide stable beam position measurement, at sub-micron level, to monitor the stability of the light delivered to the Users. The improvements with respect to the normal BPM system have been obtained adopting both a new Low Gap BPM sensor and a new non-multiplexed BPM detector, the latter being developed in co-operation with the SLS diagnostic group at the PSI. Beside the Closed Orbit mode, thanks to the digitally selectable bandwidth, the new BPM detector can be operated also in the Turn-by-Turn mode and provide the position signal to feedback loops. In this paper we first briefly review the system architecture, describing its mechanical and electronic parts. Then, we present the digital BPM detector set-up used at ELETTRA and the associated firmware required by the four-channel BPM detector to guarantee performance over the full dynamic range. The BPMposition monitoring system is also described and its integration in the BPM system presented. Laboratory tests confirmed sub-micron resolution at 10kHz data rate. A series of beam based measurements have been performed in order to test this system and to verify the improvement in performance. The system is presently used in the control room as a powerful beam quality monitor; its extension to other Storage Ring straight sections is under evaluation.