Speaker
Description
We present a new approach for producing monoenergetic, multi-GeV electron beams in an optically guided laser wakefield accelerator by utilizing a ‘π-step injector’. In this approach, spatiotemporal shaping of the channel-forming beam is employed to generate a short (≾drive beam Rayleigh range) null in the far field. This produces a localized modification of the channel structure which triggers injection within the accelerator. In proof-of-principle experiments with self-waveguided laser wakefield acceleration (SW-LWFA), this has enabled production of monoenergetic electron beams with tunable energies up to 3.5 GeV and charge up to tens of pC. Energy tuning may be achieved by varying the location of injection, accelerator length, or plasma conditions.
| Working group | WG1 |
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