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Description
Achieving plasma-based accelerators demands careful control not only of the beam energy and energy spread, but also of transverse beam properties such as emittance, size, and divergence. Since plasma-based accelerators typically produce beams with significantly larger energy spread and emittance than conventional RF accelerators, several challenges remain to be addressed: an in-depth study of the physics governing the transverse beam dynamics, the derivation of matching conditions in the plasma ramps and plateau, where the focusing gradient $K$ varies from zero up to $10^6$ m$^{-2}$, and the control of explosive emittance growth in the transport lines surrounding the plasma, where the focusing gradient is only of the order of a few m$^{-2}$. Based on fully analytical calculations supported by numerical simulations, this article addresses all these questions and establishes a general operating scheme for the transverse plane, including both plasma stages and transport lines. Such a scheme is indispensable to the design and operation of plasma-based accelerators with demanding beam-quality requirements.
| In which format do you inted to submit your paper? | LaTeX |
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