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Title: Recent Advances in Plasma Acceleration

The costs and the time scales of colliders intended to reach the energy frontier are such that it is important to explore new methods of accelerating particles to high energies. Plasma-based accelerators are particularly attractive because they are capable of producing accelerating fields that are orders of magnitude larger than those used in conventional colliders. In these accelerators a drive beam, either laser or particle, produces a plasma wave (wakefield) that accelerates charged particles. The ultimate utility of plasma accelerators will depend on sustaining ultra-high accelerating fields over a substantial length to achieve a significant energy gain. More than 42 GeV energy gain was achieved in an 85 cm long plasma wakefield accelerator driven by a 42 GeV electron drive beam in the Final Focus Test Beam (FFTB) Facility at SLAC. Most of the beam electrons lose energy to the plasma wave, but some electrons in the back of the same beam pulse are accelerated with a field of {approx}52 GV/m. This effectively doubles their energy, producing the energy gain of the 3 km long SLAC accelerator in less than a meter for a small fraction of the electrons in the injected bunch. Prospects for a drive-witness bunch configuration andmore » high-gradient positron acceleration experiments planned for the SABER facility will be discussed.« less
Authors:
Publication Date:
OSTI Identifier:
1014171
DOE Contract Number:
AC02-76SF00515
Resource Type:
Multimedia
Resource Relation:
Conference: SLAC Colloquium Series, SLAC National Accelerator Laboratory, Menlo Park, California, presented on March 19, 2007
Research Org:
SLAC (SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States))
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ACCELERATION; ACCELERATORS; CHARGED PARTICLES; CONFIGURATION; ELECTRONS; FERMILAB ACCELERATOR; LASERS; METERS; PLASMA; PLASMA ACCELERATION; PLASMA GUNS; PLASMA WAVES; POSITRONS; STANFORD LINEAR ACCELERATOR CENTER; WAKEFIELD ACCELERATORS