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Title: Head erosion with emittance growth in PWFA

Head erosion is one of the limiting factors in plasma wakefield acceleration (PWFA). We present a study of head erosion with emittance growth in field-ionized plasma from the PWFA experiments performed at the FACET user facility at SLAC. At FACET, a 20.3 GeV bunch with 1.8 Multiplication-Sign 10{sup 10} electrons is optimized in beam transverse size and combined with a high density lithium plasma for beam-driven plasma wakefield acceleration experiments. A target foil is inserted upstream of the plasma source to increase the bunch emittance through multiple scattering. Its effect on beamplasma interaction is observed with an energy spectrometer after a vertical bend magnet. Results from the first experiments show that increasing the emittance has suppressed vapor field-ionization and plasma wakefields excitation. Plans for the future are presented.
Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ;  [1] ;  [2] ;  [3]
  1. SLAC National Accelerator Laboratory, Menlo Park, CA 94025 (United States) and SLAC National Accelerator Laboratory, Menlo Park, CA 94025 (United States) and University of Oslo, Oslo, N-0316 (Norway) and SLAC National Accelerator Laboratory, Menlo Park, CA 94025 (United States)
  2. (Germany)
  3. (United States)
Publication Date:
OSTI Identifier:
22075891
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1507; Journal Issue: 1; Conference: 15. advanced accelerator concepts workshop, Austin, TX (United States), 10-15 Jun 2012; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ACCELERATION; BEAM BUNCHING; BEAM EMITTANCE; BEAM TRANSPORT; BEAM-PLASMA SYSTEMS; ELECTRONS; EROSION; EXCITATION; GEV RANGE; IONIZATION; LITHIUM; MULTIPLE SCATTERING; PLASMA; PLASMA DENSITY; PLASMA GUNS; STANFORD LINEAR ACCELERATOR CENTER; WAKEFIELD ACCELERATORS