YAG screen
The damaged screen "YAG2" with Al coating had marks and had been exchanged.
The Imager Watchdog now protects the screen - operational for some months i.e. the number of bunches is shut down to zero if the intensity at the screen is too high. In this case, best then is to use the GATT.
Follow the instructions and informations given in the Imager scene.

BN screen
Also the "BN" screen had slight marks and had been exchanged. This screen suffered from accumulated dose over the years but no special protection is foreseen. The imager Watchdog will warn. BN has a high damage threshold for single pulse damage similar to diamond. In contrast to diamond it will not show spurious reflections, like optical light in the beamline or background from SA1 pulses but it has a lower spatial resolution.
Follow the instructions and informations given in the Imager scene.