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Bentson, L.D.

Paper Title Page
WE6PFP080 Optics Design for FACET 2685
 
  • Y. Nosochkov, L.D. Bentson, R.A. Erickson, M.J. Hogan, N. Li, J. Seeman, A. Seryi, C.M. Spencer, W. Wittmer
    SLAC, Menlo Park, California
 
 

Funding: This work is supported by the Department of Energy contract DE-AC02-76SF00515.


FACET is a proposed facility at SLAC National Accelerator Laboratory for beam driven plasma wakefield acceleration research. It is proposed to be built in the SLAC linac sector 20, where it will be separated from the LCLS located downstream and will gain the maximum beam energy from the upstream two kilometers of linac. FACET will also include an upgrade to linac sector 10, where a new e+ compressor chicane will be installed. The sector 20 will require a new optics consisting of two chicanes for e+ and e- bunch length compression, a final focus system and an extraction line. The two chicanes will allow the transport of e- and e+ bunches together, their simultaneous compression and proper positioning of e+ bunch behind e- at the plasma Interaction Point (IP). For a minimal cost, the new optics will mostly use the existing SLAC magnets. The desired beam parameters at the IP are: up to 23 GeV beam energy, 2·1010 charge per bunch, 10 micron round beam spot without dispersion and 25 micron bunch length. Details of the FACET optics design and results of particle tracking simulations are presented.