Example of electron loss monitor reaction time development for the entire HERA electron storage ring at 12 GeV. The normalised rate N i;j is associated with hue over the range 0 : : : 9. Activity in the octant NR (North-right) is high. The 'flight' of individual targets along portions of the machine can be identified.
Figure 2 from HERA electron-beam lifetime disruption machine studies and observations