Figure 7
Upper plot: reference sinusoidal magnetic field and measured magnetic field as a function of the longitudinal position read by the encoder of the linear motion system scanning the longitudinal position of the Hall probe along the magnet. In order to be able to visualize the curves, only the first 10 cm of the 2 m scan-length are plotted. Middle plot: reference period lengths and measured period lengths that can be retrieved by analysing the two curves shown in the upper plot. Lower plot: distance between the peaks of the sinusoidal curve of the reference magnetic field and the ones expected from the measurement. |