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single-bunch

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MOP62 Energy Spread in BTW Accelerating Structures at ELETTRA linac, simulation, electron, target 159
 
  • P. Craievich, R.J. Bakker, G. D'Auria, S.D. Di Mitri
    Sincrotrone Trieste S.C.p.A., Basovizza, Trieste
  The FEL project FERMI@ELETTRA will use the existing 1.0 GeV Linac, based on Backward Travelling Wave (BTW) structures, to produce VUV radiation between 100–10 nm. The project will be articulated in two different phases (100–40 nm/40–10 nm) and will require high quality beam with short bunches (500/160 fsec). Hence, wakefield effects have to be considered with respect to the electron beam quality. The single bunch energy spread induced by the short-range longitudinal wakefield is analyzed and results of start-to-end simulations are reported.  
 
TUP54 Resistive-Wall Wake Effect in the Beam Delivery System focusing, impedance, vacuum, linear-collider 393
 
  • J. Wu
    SLAC, Menlo Park, California
  • J. R. Delayen
    Jefferson Lab, Newport News, Virginia
  • T.O. Raubenheimer
    SLAC/NLC, Menlo Park, California
  • J.-M. Wang
    BNL/NSLS, Upton, Long Island, New York
  The resistive wall instability is investigated in the context of the final beam delivery system of linear colliders. The emittance growth is calculated analytically and compared against the results of full numerical simulations. Criteria for the design of final beam delivery systems are developed.  
 
TUP72 TTF II Beam Monitors for Beam Position, Bunch Charge and Phase Measurements vacuum, undulator, pick-up, instrumentation 435
 
  • M. Wendt, D. Nölle
    DESY, Hamburg
  An overview of the basic beam instrumentation with regard to elecromagnetic beam monitors for the TESLA Test Facility phase II (TTF II) is given. Emphasis is put on beam position monitor (BPM) and toroid transformer systems for beam orbit and bunch charge observations. Furthermore broadband monitors, i.e. wall current and bunch phase monitors, are briefly presented.