J. Kissel

Continuing on the campaign of gathering open loop gain (and loop suppression & closed loop gain TFs), I measured the IMC suspension's MC1, MC2, and MC3 M1 damping loops this morning -- see
    /ligo/svncommon/SusSVN/sus/trunk/HSTS/H1/
        MC1/SAGM1/Data/
            2025-07-08_1636_H1SUSMC1_M1_WhiteNoise_L_0p02to100Hz_OpenLoopGainTF.xml
            2025-07-08_1636_H1SUSMC1_M1_WhiteNoise_P_0p02to100Hz_OpenLoopGainTF.xml
            2025-07-08_1636_H1SUSMC1_M1_WhiteNoise_R_0p02to100Hz_OpenLoopGainTF.xml
            2025-07-08_1636_H1SUSMC1_M1_WhiteNoise_T_0p02to100Hz_OpenLoopGainTF.xml
            2025-07-08_1636_H1SUSMC1_M1_WhiteNoise_V_0p02to100Hz_OpenLoopGainTF.xml
            2025-07-08_1636_H1SUSMC1_M1_WhiteNoise_Y_0p02to100Hz_OpenLoopGainTF.xml

        MC2/SAGM1/Data/
            2025-07-08_1615_H1SUSMC2_M1_WhiteNoise_L_0p02to100Hz_OpenLoopGainTF.xml
            2025-07-08_1615_H1SUSMC2_M1_WhiteNoise_P_0p02to100Hz_OpenLoopGainTF.xml
            2025-07-08_1615_H1SUSMC2_M1_WhiteNoise_R_0p02to100Hz_OpenLoopGainTF.xml
            2025-07-08_1615_H1SUSMC2_M1_WhiteNoise_T_0p02to100Hz_OpenLoopGainTF.xml
            2025-07-08_1615_H1SUSMC2_M1_WhiteNoise_V_0p02to100Hz_OpenLoopGainTF.xml
            2025-07-08_1615_H1SUSMC2_M1_WhiteNoise_Y_0p02to100Hz_OpenLoopGainTF.xml

        MC3/SAGM1/Data/
            2025-07-08_1703_H1SUSMC3_M1_WhiteNoise_L_0p02to100Hz_OpenLoopGainTF.xml
            2025-07-08_1703_H1SUSMC3_M1_WhiteNoise_P_0p02to100Hz_OpenLoopGainTF.xml
            2025-07-08_1703_H1SUSMC3_M1_WhiteNoise_R_0p02to100Hz_OpenLoopGainTF.xml
            2025-07-08_1703_H1SUSMC3_M1_WhiteNoise_T_0p02to100Hz_OpenLoopGainTF.xml
            2025-07-08_1703_H1SUSMC3_M1_WhiteNoise_V_0p02to100Hz_OpenLoopGainTF.xml
            2025-07-08_1703_H1SUSMC3_M1_WhiteNoise_Y_0p02to100Hz_OpenLoopGainTF.xml

The IMC was brought to OFFLINE beforehand, and I unmanaged the SUS_MC2 guardian to be sure the IMC guardian wouldn't override my wishes.
Each SUS was then brought to the new HEALTH_CHECK state but damping loops are *on.*
SEI / HPI / ISI was FULLY_ISOLATED, in its best performing state.

Data analysis and commentary to come.