Jim, Sheila
Follow up on 83705 This is the sum of the RZ (yaw) location changes due to HEPI locking, ISI being damped, and temperature changes over time when the loops are off:
| HPI | HPI (urad) | ISI | SUM |
| HAM2 | -1.9 | +8.8 | +6.9 |
| HAM3 | -0.4 | 5.8 | 5.4 |
| HAM4 | +1.1 | +14 | 15.1 |
| HAM5 | -1 | +24 | 23 |
Jim and I talked this over, and think it would make sense to isolate the ISIs while we are working on alignment, which would fix most of this drift, stop it from drfiting as the temperature keeps changing, and reduce the optic motion for us. Then we may want to add the HPI shift to any optics where we are restoring based on the top mass osems, but these are small enough shifts that they probably don't matter.
Earlier today I restored yaw according to top mass osems for PR3, PR2, SR2, and according to optical lever for ITMX, BS< and SR3. For pitch I restored PR2, SR3, ITMX, BS, but we would loose the beam on the AS port if we restored SR2 +PR3 pit. We saw the MICH fringes, but no PRX flashes before it was time for the crew to go into the chamber for REFL path work.
