Compact Linear Accelerator Sources for Gamma-ray Generation

Year
2011
Author(s)
Richard Cross - Pacific Northwest National Laboratory
J. B. Wang - Institute of Nuclear Energy Research
Tony Chung - NAC Interational INC
Z. Rostomashvili - E. Andronikashvili Institute of Physics
F.V. Hartemann - Lawrence Livermore National Laboratory
S.G. Anderson - Lawrence Livermore National Laboratory
C.P.J. Barty - Lawrence Livermore National Laboratory
G. Beer - Lawrence Livermore National Laboratory
R.R. Cross - Lawrence Livermore National Laboratory
C.A. Ebbers - Lawrence Livermore National Laboratory
F.V. Gibson - Lawrence Livermore National Laboratory
C. Adolphsen - SLAC National Accelerator Laboratory
Z. Li - SLAC National Accelerator Laboratory
S.G. Tantawi - SLAC National Accelerator Laboratory
Abstract
High precision accelerator technology is required for the development of tunable, monochromatic gamma-ray sources capable of generating MeV photons with very high brightness. High gradient accelerator technology is capable of producing high brightness electron beams in relatively short lengths. X-band technology has been demonstrated extensively in the development of the Next Linear Collider program at SLAC, and has been adapted for use in a Compton scattering gammaray source at LLNL. Critical components and technologies will be discussed including the use of high repetition rate solid state modulators, XL4 klystrons, SLED-II pulse compression, RF distribution geometries, a novel X-band RF photoinjector, high gradient traveling wave accelerator structures, and linear accelerator design and layout. Selection of beam properties relevant to gamma-ray production will be discussed, especially with respect to future improvements in gammaray brightness and dose specific to nuclear management applications