Figure 11

Reconstructed longitudinal charge profiles from ASTRA simulations. Simulations using a modified field map in which longitudinal fields are set to zero (\({E}_{z}=0\)) are compared with those using the original field map (\({E}_{z}\ne 0\)). The simulated longitudinal distribution at the position half-way between the two deflectors is shown while streaking. The calculated longitudinal resolution for these simulations is in the range 0.16 fs to 0.18 fs.