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    CLIC Beam Physics Meeting

    → Europe/Zurich
    6/2-004 (CERN)

    6/2-004

    CERN

    40
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    Description
    PLACET, Fast Beam Instability in the Main Linac
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    Participants: E. Adli, F. Antoniou, H. Burkhardt, C. Collette, R. Corsini, B. Dalena, K. Elsener, M. Fitterer, B. Jeanneret, E. Marin, Ö. Mette, G. Rumolo, D. Schulte, F. Stulle, R. Tomas, A. Vivoli D. Schulte informed that on Friday 27th of March a meeting will take place on work related to normal-conducting RF within EU FP7. An instrumentation workshop will take place beginning of June. Participation and talks by colleagues working on beam dynamics could be useful. B. Jeanneret gave a short update on the magnets list. F. Stulle presented latest simulation results of the RTML. ELEGANT and PLACET lattices are now available. B. Dalena reported on progress and plans for PLACET. Major improvements have been made to the manual. Besides this many bugs have been corrected. Binary files are available in AFS: /afs/cern.ch/eng/sl/clic-code/software. It is planned to add tracking capabilities for the interaction region. It was discussed how to improve TwissPlot and TwissPlotStep commands, which are not always consistent. Further improvements to the code were discussed, e.g. calculation of transfer matrices, 6d tracking, description of command option in the manual. J. Pfingstner asked if a programmers manual could be produced. D. Schulte replied that the users manual has higher priority and at the moment there are no resources for a programmers manual. H. Burkhardt asked if the possibility to compile a binary including HTGEN and OCTAVE modules could be provided. B. Dalena answered that this could be explored. G. Rumolo reported on the requirements for the simulation of fast ion instabilities. These have been performed for the main linac in the past by extracting Twiss output from PLACET and using it in the code FASTION. Now similar simulations should be performed for the drive beam decelerator. Since the energy spread gets extremely larger the Twiss output is no longer useful. It was discussed which type of data is needed and if fast ion simulations could be integrated into PLACET.
    There are minutes attached to this event. Show them.
      • 16:00 → 16:20
        Update on RTML Simulations 20m
        Speaker: Dr Frank Stulle (CERN)
        Slides
      • 16:20 → 16:40
        Update on Magnets List for the Drive Beam 20m
        Speaker: Bernard Jeanneret (CERN)
        Slides
      • 16:40 → 17:00
        Discussion on PLACET Development 20m
        Speaker: all
        Slides
      • 17:00 → 17:20
        Discussion on fast beam instability studies in the drive beam decelerator 20m
        Speaker: all
        Slides