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Confocal Multipath Laser Cavity to Enhance Compton Backscattering

The design considerations of a confocal multipath laser cavity to enhance Compton backscattering are presented. Ray trace simulation results predicted that 29–14-fold enhancement of the laser field can be achieved at the confocal point by superposition of mode locked laser pulses. As a result, Compton backscattered X-rays, generated by interaction of an intense laser field with a relativistic electron beam, will be enhanced efficiently by a factor of more than 10.