P. King, J. Oberling

Short Version:  The PSL is now up and running following the HPO water leak (first reported here, repairs reported here).

Long Version:  This morning, after giving the HPO ~48 hours to completely dry, we inspected the HPO optical surfaces.  The only thing found was some water spots on the head 1 4f lens (this was drag wiped clean); all other optical surfaces look good.  We then slowly brought up each head individually to ensure no contamination was causing the optical surfaces to glow; all good here as well.  The HPO was then successfully powered up an allowed to warm up for several minutes.  The front end came on without issue and the injection locking locked immediately.  After allowing the system to warm up for ~1 hour, I attempted to lock the PSL subsystems (PMC, FSS, ISS).  The PMC did not want to lock; according to Peter this was likely due to a slight horizontal misalignment (this is seen in a trend of the QPD that lives in the ISS box.  I unfortunately don't have a copy of it).  I returned to the enclosure and tweaked the beam alignment into the PMC and it locked without issue.  I then tweaked the PMC alignment further to maximize the power throughput.  PMC now has a visibility of ~80% with ~122W transmitted (with ISS on).  The FSS and ISS both locked without issue.  The PSL is now operational and fully recovered from the water leak.