High-intensity laser synchrotron x-ray source

Pogorelsky, Igor

doi:10.2172/197223

Cited by 2 publications

(1 citation statement)

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“…High repetition rate, multi-kilowatt average power and a relatively short, ~1 ns, pulse duration have been demonstrated with such lasers [2]. This adds to other arguments that favor the long-wavelength CO 2 laser as the LSS driver [3][4][5]. The proposed concept of using channeled CO 2 laser beams may benefit a number of potential LSS applications in science and engineering.…”

Section: Introductionmentioning

confidence: 99%

Laser-electron Compton interaction in plasma channels

Pogorelsky¹,

Ben‐Zvi

Hirose

1998

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SummaryA concept of high intensity femtosecond laser synchrotron source (LSS) is based on Compton backscattering of focused electron and laser beams. The short Rayleigh length of the focused laser beam limits the length of interaction to a few picoseconds. However, the technology of the high repetition rate highaverage power picosecond lasers required for high put through LSS applications is not developed yet. Another problem associated with the picosecond laser pulses is undesirable nonlinear effects occurring when the laser photons are concentrated in a short time interval. To avoid the nonlinear Compton scattering, the laser beam has to be split, and the required hard radiation flux is accumulated over a number of consecutive interactions that complicates the LSS design. In order to relieve the technological constraints and achieve a practically feasible high-power laser synchrotron source, we propose to confine the laser-electron interaction region in the extended plasma channel. This approach permits to use nanosecond laser pulses instead of the picosecond pulses. That helps to avoid the nonlinear Compton scattering regime and allows to utilize already existing technology of the high-repetition rate TEA CO 2 lasers operating at the atmospheric pressure. We demonstrate the advantages of the channeled LSS approach by the example of the prospective polarized positron source for Japan Linear Collider.

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Section: Introductionmentioning

confidence: 99%