Single-stage plasma-based correlated energy spread compensation for ultrahigh 6D brightness electron beams.

ABSTRACT: Plasma photocathode wakefield acceleration combines energy gains of tens of GeV m^-1 with generation of ultralow emittance electron bunches, and opens a path towards 5D-brightness orders of magnitude larger than state-of-the-art. This holds great promise for compact accelerator building blocks and advanced light sources. However, an intrinsic by-product of the enormous electric field gradients inherent to plasma accelerators is substantial correlated energy spread-an obstacle for key applications such as free-electron-lasers. Here we show that by releasing an additional tailored escort electron beam at a later phase of the acceleration, when the witness bunch is relativistically stable, the plasma wave can be locally overloaded without compromising the witness bunch normalized em

SUBMITTER: Manahan GG 

PROVIDER: S-EPMC5465367 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature