Propagation of a fiducial jet (jet B) during the first seconds after injection. The dimensions of the box are , with an effective resolution of 6 cells/R_j. The density distribution of the ambient medium is represented in logarithmic scale, where we limited the maximum density to ρ_max = 10 ρ_w to highlight the wind clumps. Magnetic field lines are represented in the head of the jet, where the density is highest. The 3D jet render is constructed using the jet tracer function and is colored with the same colour scale as the density distribution (although we do not show the tracer legend to avoid redundancy), where jet particles (f = 1) are represented in light blue and white and the ambient medium (f = 0) in yellow and white. A gas pressure contour (faint yellow) is also included to show the position of the jet bow shock.