FACET Emittance Growth

Conference · Tue Apr 05 04:00:00 EDT 2011

OSTI ID:1010945

Frederico, J; Hogan, M J; Nosochkov, Y; Litos, M D; Raubenheimer, T

FACET, the Facility for Advanced Accelerator and Experimental Tests, is a new facility being constructed in sector 20 of the SLAC linac primarily to study beam driven plasma wakefield acceleration. The FACET beamline consists of a chicane and final focus system to compress the 23 GeV, 3.2 nC electron bunches to {approx}20 {micro}m long and {approx}10 {micro}m wide. Simulations of the FACET beamline indicate the short-duration and large, 1.5% rms energy spread beams may suffer a factor of four emittance growth from a combination of chromaticity, incoherent synchrotron radiation (ISR), and coherent synchrotron radiation (CSR). Emittance growth is directly correlated to head erosion in plasma wakefield acceleration and is a limiting factor in single stage performance. Studies of the geometric, CSR, and ISR components are presented. Numerical calculation of the rms emittance can be overwhelmed by long tails in the simulated phase space distributions; more useful definitions of emittance are given. A complete simulation of the beamline is presented as well, which agrees with design specifications.

• Research Organization: SLAC National Accelerator Laboratory (SLAC)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 1010945
• Report Number(s): SLAC-PUB-14417
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATION
ACCELERATORS
Accelerators
ACCPHY
DESIGN
ELECTRONS
LINEAR ACCELERATORS
PERFORMANCE
PHASE SPACE
PLASMA
SIMULATION
SPECIFICATIONS
STANFORD LINEAR ACCELERATOR CENTER
SYNCHROTRON RADIATION