I cleaned up the scattered tools, optics, and mounts of the PSL table. I gathered those stuffs at the two coners.
At the end of the work I scanned the table with an IR viewer. (This is mandatory)
I put some beam block plates to kill weak stray beams.
One thing I like to call the attention is:
Particularly, there was no beam block at the forward rejection side of the first PBS where we dump the high power beam.