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arxiv 2107.00479 v1 pith:J7DPIJ3J submitted 2021-06-30 physics.acc-ph physics.plasm-ph

Two-Pulse Direct Laser Acceleration in a Laser-Driven Plasma Accelerator

classification physics.acc-ph physics.plasm-ph
keywords accelerationlaseracceleratorbubbleco-propagatingdirectenergylaser-driven
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present methods and preliminary observations of two pulse Direct Laser Acceleration in a Laser-Driven Plasma Accelerator. This acceleration mechanism uses a second co-propagating laser pulse to overlap and further accelerate electrons in a wakefield bubble, increasing energy at the cost of emittance when compared to traditional laser wakefield acceleration (LWFA). To this end, we introduce a method of femtosecond scale control of time delay between two co-propagating pulses. We show energy enhancement when the separation between the two pulses approaches the bubble radius.

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