Hollow plasma channels are promising candidates for the acceleration of electron and positron beams as the transverse forces are nearly vanishing inside the hollow channel. The acceleration is effective as long as the accelerated bunches are perfectly cylindrically symmetric and injected on the axis of the hollow channel structure. Furthermore, the accelerating fields can also be nearly...
Full 3D modeling of plasma-based accelerators using particle-in-cell (PIC) simulations is very computationally demanding. The use of a reduced model such as the ponderomotive guiding center algorithm (PGC) [1] allows us to bridge the large-scale disparity between the shortest (laser) wavelengths, which is in µm range, and the acceleration distance, which can exceed the meter range. Here, we...
In Laser WakeField Acceleration, when relevant scale lengths of the laser envelope and of the plasma waves are well separated from the wavelength of the laser fast oscillating component, the time-averaged particles trajectories can be computed by means of a set of more efficient, properly modified equations of motion [1,2]. Besides, in regimes well described by the Lorentz-Maxwell fluid...
