As we prepare to align the IMC and IOT2, we may want to increase the laser power injected into the vacuum from the few hundred mW that we've been at for a few months up to a couple Watts.  There was some concern that we want to ensure that we're not going to harm anything in HAM6, since it is still at atmosphere and the trigger PD for the fast shutter is not currently plugged in.  There shouldn't be any problem however.  I have got the ITMs, PRM and SRM misaligned so that we're not getting any PRMI flashes and no beam is going to HAM6.  Please leave the ITMs, PRM and SRM misaligned. 

Even if the PRMI were to flash, nothing in HAM6 is aligned, so there should be no beam on any PDs or on the OMC.  Also, the PDs would be able to handle that much power, vacuum or atmo.  Given the gross misalignments, the likelihood of the OMC resonating is vanishingly small.

With the recycling mirrors misaligned but the ITMs aligned (so just transmission through optics, no resonant flashes) the max amount of power going to HAM6 is 3mW for every 1W of injected light (3% transmission through PRM, 25% for 2 BS passes, and 35% for the SRM).  We do not intend to go higher than 1W or 2W, which would put about 6mW at HAM6.  However, it is conceivable that the rotation stage could let up to ~50W into the vacuum, in which case we'd have 130mW of light at HAM6.  Not insignificant, but still should be fine. 

So, we are software ensuring that no beam is going to HAM6 while we use about 2W of PSL power, but even if some of the optics get re-aligned it'll all be fine.