Wednesday 5/1 and Thursday 5/2.
The central area was vented in two phases, on Wed afternoon and all day on Thu. I monitored the SRM (and other Type Bs - see separate reports).
Before:
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Guardian IM_DAMP_ENGAGED
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IP SET -400/-50/-3600
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IP BLEND same
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IP COILOUTF -3790/-495/3248 (OK)
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GAS SET -1600/0/0
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GAS LVDTINF same
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GAS COILOUTF -6670/-4733/-2400 (OK)
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OLSET -10/-174 (but OLDCTRL off; OPTICALIGN also off)
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OLSUM was 17400/13327 (good)
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OLDIAG was 283/-10/-174.
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Initial IF FR 360648/495352/?? (I wrote down the F0 stepper value by mistake instead of #3)
During venting I monitored the IP DCCTRL and COILOUTF values and applied 5000 steps of L or T, or 2000 steps of Y at a time to keep the COILOUTF values less than 5000 cts.
The final IP FR positions were 502908/447092/495000. This was a fairly large change compared to BS.
The F0 COILOUTF went over -20000, so I reduced the SET value from -1600 to -1500 µm. This should be undone after pumpdown. Also, the 100 µm adjustment made a suspiciously large change to the control output. We should check for touching. The final GAS COILOUTFs were -12400/-11769/-6756.