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Laser Wakefield Acceleration Driven by ATF CO(sub 2) Laser (STELLA-LW).

DE200415009933

Publication Date	2004
Personal Author	Kimura, W. D.; Andreev, N. E.; Babzien, M.; Ben-Zvi, I.; Cline, D. B.; Dilley, C. E.; Gootschalk, S. C.; Hooker, S. M.; Kusche, K. P.; Kuznetosov, S. V.; Pantell, R. H.
Page Count	14
Abstract	A new experiment has begun that builds upon the successful Staged Electron Laser Acceleration (STELLA) experiment, which demonstrated high-trapping efficiency and narrow energy spread in a staged laser-driven accelerator. STELLA was based upon inverse free electron lasers (IFEL); the new experiment, called STELLA-LW, is based upon laser wakefield acceleration (LWFA). The first phase of STELLA-LW will be to demonstrate LWFA in a capillary discharge driven by the Brookhaven National Laboratory Accelerator Test Facility (ATF) terawatt CO(sub 2) laser beam. This will be the first time LWFA is conducted at 10.6-(micro)m laser wavelength. It will also be operating in an interesting pseudo-resonant regime where the laser pulse length is too long for resonant LWFA, but too short for self-modulated LWFA. Analysis has shown that in pseudo-resonant LWFA, pulse-steepening effects occur on the laser pulse that permits generation of strong wakefields. Various approaches are being explored for the capillary discharge including polypropylene and hydrogen-filled capillaries. Planned diagnostics for the experiment include coherent Thomson scattering (CTS) to detect the wakefield generation.
Keywords	Wakefield accelerators Lasers Acceleration Capillaries Electrons Efficiency Free electron lasers Polypropylene Thomson scattering Staged Electron Laser Acceleration(STELLA) STELLA(Staged Electron Laser Acceleration)
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	STI Optronics, Inc., Bellevue, WA.; Brookhaven National Lab., Upton, NY.; California Univ., Los Angeles.; Department of Energy, Washington, DC.; Russian Academy of Sciences, Moscow. Inst. for High Energy Densities.
Supplemental Notes	Prepared in cooperation with Brookhaven National Lab., Upton, NY., California Univ., Los Angeles. and Russian Academy of Sciences, Moscow. Inst. for High Energy Densities. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200517

Laser Wakefield Acceleration Driven by ATF CO(sub 2) Laser (STELLA-LW).

Laser Wakefield Acceleration Driven by ATF CO(sub 2) Laser (STELLA-LW).
DE200415009933

Publication Date	2004
Personal Author	Kimura, W. D.; Andreev, N. E.; Babzien, M.; Ben-Zvi, I.; Cline, D. B.; Dilley, C. E.; Gootschalk, S. C.; Hooker, S. M.; Kusche, K. P.; Kuznetosov, S. V.; Pantell, R. H.
Page Count	14
Abstract	A new experiment has begun that builds upon the successful Staged Electron Laser Acceleration (STELLA) experiment, which demonstrated high-trapping efficiency and narrow energy spread in a staged laser-driven accelerator. STELLA was based upon inverse free electron lasers (IFEL); the new experiment, called STELLA-LW, is based upon laser wakefield acceleration (LWFA). The first phase of STELLA-LW will be to demonstrate LWFA in a capillary discharge driven by the Brookhaven National Laboratory Accelerator Test Facility (ATF) terawatt CO(sub 2) laser beam. This will be the first time LWFA is conducted at 10.6-(micro)m laser wavelength. It will also be operating in an interesting pseudo-resonant regime where the laser pulse length is too long for resonant LWFA, but too short for self-modulated LWFA. Analysis has shown that in pseudo-resonant LWFA, pulse-steepening effects occur on the laser pulse that permits generation of strong wakefields. Various approaches are being explored for the capillary discharge including polypropylene and hydrogen-filled capillaries. Planned diagnostics for the experiment include coherent Thomson scattering (CTS) to detect the wakefield generation.
Keywords	Wakefield accelerators Lasers Acceleration Capillaries Electrons Efficiency Free electron lasers Polypropylene Thomson scattering Staged Electron Laser Acceleration(STELLA) STELLA(Staged Electron Laser Acceleration)
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	STI Optronics, Inc., Bellevue, WA.; Brookhaven National Lab., Upton, NY.; California Univ., Los Angeles.; Department of Energy, Washington, DC.; Russian Academy of Sciences, Moscow. Inst. for High Energy Densities.
Supplemental Notes	Prepared in cooperation with Brookhaven National Lab., Upton, NY., California Univ., Los Angeles. and Russian Academy of Sciences, Moscow. Inst. for High Energy Densities. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200517