Plasma Wakefield Experiments at FACET

Conference · Fri Aug 19 04:00:00 EDT 2011 · New J.Phys.12:055030,2010

OSTI ID:1022469

Hogan, M J; England, R J; Frederico, J; Hast, C; Li, S Z; Litos, M; Walz, D; An, W; Clayton, C E; Joshi, C; Lu, W; Marsh, K A; Mori, W; Tochitsky, S; Muggli, P; Pinkerton, S; Shi, Y

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 beginning in summer 2011. The nominal FACET parameters are 23GeV, 3nC electron bunches compressed to {approx}20{micro}m long and focused to {approx}10{micro}m wide. The intense fields of the FACET bunches will be used to field ionize neutral lithium or cesium vapor produced in a heat pipe oven. Previous experiments at the SLAC FFTB facility demonstrated 50GeV/m gradients in an 85cm field ionized lithium plasma where the interaction distance was limited by head erosion. Simulations indicate the lower ionization potential of cesium will decrease the rate of head erosion and increase single stage performance. The initial experimental program will compare the performance of lithium and cesium plasma sources with single and double bunches. Later experiments will investigate improved performance with a pre-ionized cesium plasma. The status of the experiments and expected performance are reviewed. The FACET Facility is being constructed in sector 20 of the SLAC linac primarily to study beam driven plasma wakefield acceleration. The facility will begin commissioning in summer 2011 and conduct an experimental program over the coming five years to study electron and positron beam driven plasma acceleration with strong wake loading in the non-linear regime. The FACET experiments aim to demonstrate high-gradient acceleration of electron and positron beams with high efficiency and negligible emittance growth.

• Research Organization: SLAC National Accelerator Laboratory (SLAC)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 1022469
• Report Number(s): SLAC-PUB-14421
• Conference Information: Journal Name: New J.Phys.12:055030,2010
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATION
ACCELERATORS
Accelerators
ACCPHY
CESIUM
COMMISSIONING
EFFICIENCY
ELECTRONS
HEAT PIPES
IONIZATION POTENTIAL
LINEAR ACCELERATORS
LITHIUM
PERFORMANCE
PLASMA
PLASMA ACCELERATION
POSITRON BEAMS
STANFORD LINEAR ACCELERATOR CENTER