Design of an XUV FEL Driven by the Laser-Plasma Accelerator at theLBNL LOASIS Facility

Conference · Fri Sep 01 04:00:00 EDT 2006

OSTI ID:898953

Schroeder, Carl B; Fawley, W M; Esarey, Eric; Leemans, W P

We present a design for a compact FEL source of ultrafast, high-peak flux, soft x-ray pulses employing a high-current, GeV-energy electron beam from the existing laser-plasma accelerator at the LBNL LOASIS laser facility. The proposed ultra-fast source would be intrinsically temporally synchronized to the drive laser pulse, enabling pump-probe studies in ultra-fast science with pulse lengths of tens of fs. Owing both to the high current ({approx} 10 kA) and reasonable charge/pulse ({approx} 0.1-0.5 nC) of the laser-plasma-accelerated electron beams, saturated output fluxes are potentially 10{sup 13}--10{sup 14} photons/pulse. We examine devices based both on SASE and high-harmonic generated input seeds to give improved coherence and reduced undulator length, presenting both analytic scalings and numerical simulation results for expected FEL performance. A successful source would result in a new class of compact laser-driven FELs in which a conventional RF accelerator is replaced by a GeV-class laser-plasma accelerator whose active acceleration region is only a few cm in length.

• Research Organization: Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
• Sponsoring Organization: USDOE Director, Office of Science. Office of Basic EnergySciences
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 898953
• Report Number(s): LBNL--60154; BnR: YN0100000
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATION
ACCELERATORS
DESIGN
ELECTRON BEAMS
FREE ELECTRON LASERS
Free-electron laser Laser-plasma acceleration soft x-rayFEL
LASERS
PERFORMANCE
SIMULATION
SOFT X RADIATION
WIGGLER MAGNETS