Other quick notes from HAM7 yesterday. 

ZM5 alignment restored.  When Jeff calibrated the alignment sliders, 60632, he didn't update alignment offsets so the alingment of ZM5 was wrong.  When Camilla logged the slider values 60446 the gain of the pitch slider was 1, but the yaw slider had a gain of 4.  Now I've adjusted the offsets so that the outputs are the same as when we did the alignment and set irses. ZM4+ ZM6 had 0 offset, so no changes were needed. For ZM5 the new offsets are 201 for pit, 3196 for yaw to reproduce the outputs from before the calibration.

CLF lens swapped.  Another quick thing that we did yesterday was swap the lens in the CLF refl (F) path to give us a better collimated beam heading towards SQZT7.  There was a lens installed in this path labeld F:L1, looking at the scribe on the barrel with a flashlight it was E2000077 05, (+150mm ROC).  We instead used the lens that was mounted in a post labeled C:L1, which is E2000077-07 (+250mm ROC).  This resulted in a smaller beam on SQZT7 periscope, and we realigned to get the green transmission onto the PDA100A.

Betsy also came and had a look at how we could place ZM1; we have a few things in the way.  The CLF refl lens was one thing that was possibly in the way, but after we swapped it Georgia placed it after the steering mirror so that it will no longer be close to ZM1.  The retro-reflection mirror used to imitate ZM1 for the alignment of the ZM4,5,6 to HAM5 path is going to have to move before we can place ZM1. 

Here are the analogous plots and tables as LHO60411 for this new data. Here I'm just including the new ZM5 data. I'm getting about 10mD different at the new beam location than the previous dataset. This makes the data overlap a bit worse than the CIT calibrations, by about that same 10mD.

  ZM4 PZT [V]    ZM4 strain    ZM4 defocus    ZM4 defocus    ZM5 PZT [V]    ZM5 strain    diam X [um]    ZM5 defocus    diam Y [um]    ZM5 defocus  ZM5 q_X        ZM5 q_Y
                  gauge [V]         X [mD]         Y [mD]                    gauge [V]                        X [mD]                        Y [mD]
-------------  ------------  -------------  -------------  -------------  ------------  -------------  -------------  -------------  -------------  -------------  -------------
            0         10.81            113            109              0         -8.66           1646       -670.146           1682       -663.666  -2.542+0.797i  -2.572+0.825i
            0         10.81            113            109             30         -9.15           1713       -656.73            1753       -649.538  -2.622+0.854i  -2.659+0.888i
            0         10.81            113            109             60         -9.76           1805       -638.429           1840       -632.331  -2.739+0.942i  -2.771+0.975i
            0         10.81            113            109             90        -10.44           1906       -618.475           1939       -612.871  -2.876+1.054i  -2.907+1.089i
            0         10.81            113            109            120        -11.08           2005       -599.032           2029       -595.275  -3.021+1.181i  -3.039+1.209i
          100          8.74            170            162            120        -11.09           2122       -602.035           2148       -596.422  -3.152+1.158i  -3.179+1.200i
          100          8.74            170            162             90        -10.6            2054       -614.67            2078       -609.423  -3.046+1.071i  -3.069+1.106i
          100          8.74            170            162             60        -10.08           1963       -631.636           1988       -626.193  -2.913+0.968i  -2.936+1.000i
          100          8.74            170            162             30         -9.41           1862       -650.556           1880       -646.412  -2.776+0.869i  -2.789+0.891i
          100          8.74            170            162              0         -8.66           1755       -670.723           1771       -666.945  -2.642+0.779i  -2.652+0.797i

I have the mirror phase map of ZM5-SN1 that is installed. Here is the mirror map processed to indicate the curvature applied to the beam at any beam spot along the surface: curvatureC.pdf There are some unusual features in this mirror map, and it is one of the earlier ones before the measurement process with the ZMs may have been perfected. In any case, you can see that there is some variation along the optic which could explain the 10mD difference in the previous dataset. It could also explain that the CIT calibration may be off by some amount, as it is not clear what point on the optic it is most representative of the overall curvature in the CIT measurement., presumably some sort of average over the surface

Following the thread of Sheila's comment - I'm attaching a pic of the new F:L2 (label attached to the mount is C:L1) in it's location between the VOPO and SQZT7.

We moved it to the other side of F:M2 so it won't clash with the dog clamps on Z:M1 (see HAM7 layout diagram here). If the new location of the lens is a problem we can easily move it back without much trouble, the beam size on the periscope is fine with the lens on either side of the mirror.

Sheila pointed out that in the solidworks drawing of HAM7 with the beam diverter open the path from the squeezer to the filter cavity will be blocked so we might need to move the beam diverter position in the future.