Fig. 5

Magnetic perturbations with m/n = 4/1 during two ELMs. The amplitudes of the radial (i.e., the n = 1 component evaluated using FFT analysis) and poloidal magnetic perturbations on the wall for \(\:{\delta\:B}_{\text{r},\text{n}\:=\:1}^{\text{F}\text{F}\text{T}}\) (upper row) and \(\:{\delta\:B}_{\theta\:}\) (middle row) as a function of (a, a'), (b, b') toroidal/poloidal position and time, (c, c'), (d, d') toroidal/poloidal position, and (e, e'), (f, f') top/cross-section view. We obtained the values in (e, e'), (f, f') by integrating the measured values of \(\:{dB}_{r,\theta\:}/dt\) starting at a time corresponding to the left boundary of the displayed time interval. The left column corresponds to the ELM triggered at t = 8,097.074 ms [case A: (a)–(f)] and the right column (separated by a vertical dash-dot line) to the ELM triggered at t = 8,271.890 ms [case B: (a')–(f')]. The levels of the contour plots are auto-scaled for each case, while the vertical (angles) and horizontal (time) axes are in the same range for both cases.