Cuts of the simulation CKS8-UCT (see Table 2) at t = 10 000 M, showing logarithmic plasma magnetization σ = b²/ρ and MRI quality factor in the θ-direction, . Panel a: cross section of the jet at z = 100 M. Panel b: MRI-quality factors in the disk at z = 0. A magenta circumference marks the black hole outer horizon. Panel c: AMR blocks, of 16³ cells, following the propagation of the jet.