Abstract:
I checked REFL table to see if there is an error like beam clipping or not.
It seems fine but some ghost beam is off from the beam dump, so we need to arrange the REFL optics at some point.
Also, I checked the grounding of RF PDs and QPD, and found that gound is not stable but cannot fix the problem today.

Detail:
I checked the beam to RF PDs are not clipping (though it is not likey because we can lock FPMI).
There seems no clipping on the REFL table.
However, during the work, I found several ghost beam are not on the beam dumps, so it is better to fix it at some point.

After that, I checked the ground of RF PDs and QPDs.
I measured resistance of PD bodies and optical table, which should be isolated, but values are almost zero: not good.
Moreover, resistances are not stable and sometimes they increases to several hundreds ohms.
It might be a problem, so it is better to fix it but cannot be done today due to the lack of time.