3D view of the inner parts of torus in the end of simulation with β = 100 and black hole spin of a = 0.9 (model GRB-HS100). The color scale presents density of the flow, while the thick blue line is a visualization of the magnetic field structure within the jet, with a chosen field line originating in the region close to black hole horizon (sphere of radius r = 2). We note that the plot does not show the full computational domain, but it is zoomed to the innermost ∼100 r_g. For a GRB model with a black hole of three solar masses in the engine, the physical size in this plot is about 4.5 × 10⁷ cm.