Oli, Ibrahim, RyanC
We took a look at the osems current positions for the suspensions post power outage to make sure the offsets are still correct, the previously referenced "Golden time" was 1427541769 (the last drmi lock before the vent). While we did compare against this time we mainly set them to before the poweroutage.
Input:
IM1_P: 368.5 -> 396.1, IM1_Y: -382.7 -> -385.4
IM2_P: 558.0 -> 792.0, IM2_Y: -174.7 -> -175.7
IM3_P: -216.3 -> -207.7, IM3_Y: 334.0 -> 346.0
IM4_P: -52.4 -> -92.4, IM4_Y: 379.5 -> 122.5
SR2_P: -114.3 -> -117.6, SR2_Y: 255.2 -> 243.6
SRM_P: 2540.3 -> 2478.3, SRM_Y: -3809.1 -> -3825.1
SR3_P: 439.8 -> 442.4, SR3_Y: -137.7 -> -143.9
Output:
ZM6_P: 1408.7 -> 811.7, ZM6_Y: -260.1 -> -206.1
OM1_P: -70.9 -> -90.8, OM1_Y: 707.2 -> 704.5
OM2_P: -1475.8 -> -1445.0, OM2_Y: -141.2 -> -290.8
OM3_P: Didn't adjust, OM3_Y: Didn't adjust
Input:
PRM_P: -1620.8 -> -1672, (Changed by -51.2) PRM_Y: 579.6 -> -75.6 (Changed by -655.2)
PR2_P: 1555 -> 1409 (Changed by 146), PR2_Y: 2800.7 -> -280.8 (Changed by -3081.5)
PR3_P: -122.2 -> -151 (Changed by -28.8), PR3_Y: -100 -> -232.4 (Changed by -132.4)
MC1_P: 833.3 -> 833.3, MC1_Y: -2230.6 -> -2230.6 (No change)
MC2_P: 591.5 -> 591.5, MC2_Y: -580.4 -> -580.4 (No change)
MC3_P: -20.3 -> -20.3, MC3_Y: -2431.1 -> -2431.1 (No change)
Attached are plots showing the offsets (and their relevant M1 OSEMs) before and after the suspension was reliably aligned.
Comparing QUADs, BS, and TMSs pointing before to after outage. All had come back up from the power outage with a slightly different OPTICALIGN OFFSET for P and Y, due to the power outage taking everything down, and then when systems got back up, the OPTICALIGN OFFSETS were read from the sus sdf files, and those channels aren't monitored by sdf and so had older offset values. I set the offest values back to what they were before the power outage, but still had to adjust them to get the top masses pointed back to where they were before the outage.
'Before' refers to the OPTICALIGN OFFSET values before the outage, and 'After' is what I changed those values to to get the driftmon channels to match where they were before the outage.
HAM7/8 suspensions was brought back, details in 83774.
Betsy, Oli, Camilla
We rechecked that everything was put back to this time, looking at the M1 DAMP channels for each optic, e.g. H1:SUS-OM1_M1_DAMP_{P,Y}_INMON:
For each ndscope, 1st t-cursor on originally "good DRMI time" we had planned to go back to, second t-cursor on time we went back to.
I checked the rest of the optics and verified that they all got put back to point where they were pointing before the power outage. I've also used one of the horizontal cursors to mark where the optic was at the "good DRMI time", and the other cursor marks where the optic is currently.
MCs
PRs
ZMs
FCs