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AdV-PSL (Pre-mode-cleaner block)
Cleva, Coulon, Kefelian - 12:11 Thursday 08 March 2018 (40737) Print this report
PMC Loop optimization
# PMC Double Notch compensator integration & test

we insert a double notch to compensate for the PMC_PZT TF
-> double notch: f=8250 Hz; Qp=2.4; Qz=6.9 / f=20840 Hz; Qp=2.5; Qz=5.0
plot 1 & 2 gives the Bode and Nichols plot

(Rem.: OLTF is measured while PDH = 2,2 V)


# PMC lock with PD_PMC_>2018

The loop has 18 dB margin (use to be 15 db before)
Oscillation starts for PDH_pp >= 6.6 V

-> PDH_Meanvalue ~ 2,34 Vpp
Images attached to this report
Comments to this report:
cleva - 8:25 Thursday 22 March 2018 (40861) Print this report

this integration has been done on the 6th of March

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