H2 Controls Settings Comments ********************************** # Summary # 1) MICH Stopband filter changes affect noise coupling into AS_Q. Marked as MICH_FILT in Peter's list of segments. 2) Some bad settings of AS EO Shutter. 3) DARM_GAIN & ETM_POS_GAIN changes affect the calibration and need to be corrected for. ========================================================================= H2:LSC-DARM_GAIN -0.820000 -0.600000 ** Gain out of configuration for Seg1 & Seg2. Needs to be accounted for by the calibration team. ========================================================================= H2:ASC-WFS_Gain_Slider 1.500000 1.503360 ** Lots of changes for this value, but all less than 5%. Much less than the optical gain drift and so all changes can be ignored. ========================================================================= H2:LSC-MICH_GAIN -0.090000 -0.080000 ** 33 changes. Intended to keep the MICH loop gain constant. Typically number changes by 10-20%. Affects the POB_Q -> AS_Q coupling by same amount. ========================================================================= H2:LSC-PRC_GAIN -0.047500 -0.070000 ** 8 changes. Intended to keep the PRC loop gain constant. Typically number changes by 10-90%. Affects the POB_I -> AS_Q coupling by same amount. ========================================================================= H2:LSC-ISCT10EO_LOHV_ADJ 0.229987 0.094180 ======== Changes, seg 146 (730885266-730892673) --> 147 (730898486-730899994) H2:LSC-AS2_I_GAIN 0.018705 0.037440 H2:LSC-AS2_Q_GAIN 0.018705 0.037440 H2:LSC-ASI_CORR_GAIN -40095.917157 -20031.959621 ======== Changes, seg 149 (730903879-730910556) --> 150 (730917899-730923587) H2:LSC-AS2_I_GAIN 0.037440 0.018705 H2:LSC-AS2_Q_GAIN 0.037440 0.018705 H2:LSC-ASI_CORR_GAIN -20031.959621 -40095.917157 ** 8 changes of ISCT10EO_LOHV. This sets the light level on the AS PD and so is quite significant. There's no elog entries to be had for these changes. These changes don't warrant any special attention by the calibration team. This Shutter change is sometimes, but not always, accompanied by changes in AS2_Q_GAIN & ASI_CORR_GAIN. There's no hard reason to throw these segments out right away but I expect they'll turn out to be noisier (bad loop gain, PD saturations) ========================================================================= H2:SUS-MC2_MCL_SW1R 52468.000000 52476.000000 H2:SUS-MC2_MCL_SW1R_bit3 Off On ** Does not affect Science mode. MC2-MCL path is not used when the Common Mode servo is on. ========================================================================== H2:SUS-MC2_DEWHITE_SW1R 31.000000 16.000000 H2:SUS-MC2_DEWHITE_SW1R 16.000000 31.000000 ** MC2 Dewhitening OFF for Seg 35. Does not affect couplings. No significant change in Inpiral Range or AS_Q BLRMS. I suggest we keep the segment ========================================================================= H2:LSC-MICH_SW1R 53044.000000 3892.000000 H2:LSC-MICH_SW1R_bit14 On Off H2:LSC-MICH_SW1R 3892.000000 53044.000000 H2:LSC-MICH_SW1R_bit14 Off On ** Changed ~10 times. Changes the noise and the POB_Q/MICH -> AS_Q coupling drastically in the 50-120 Hz band. Needs to be looked at by the coupling groups (vetos, calibration). ============================================================================= ======== Changes, seg 195 (731563411-731565078) --> 196 (731654694-731655428) H2:SUS-BS_OLPIT_SW1R 820.000000 13108.000000 H2:SUS-BS_OLPIT_SW1R_bit12 Off On H2:SUS-BS_OLPIT_SW1R_bit13 Off On H2:SUS-BS_OLYAW_SW1R 820.000000 13108.000000 H2:SUS-BS_OLYAW_SW1R_bit12 Off On H2:SUS-BS_OLYAW_SW1R_bit13 Off On H2:SUS-ETMX_OLPIT_GAIN -200.000000 -250.000000 H2:SUS-ETMX_OLPIT_SW1R 820.000000 13108.000000 H2:SUS-ETMX_OLPIT_SW1R_bit12 Off On H2:SUS-ETMX_OLPIT_SW1R_bit13 Off On H2:SUS-ETMX_OLYAW_GAIN 280.000000 320.000000 H2:SUS-ETMX_OLYAW_SW1R 820.000000 13108.000000 H2:SUS-ETMX_OLYAW_SW1R_bit12 Off On H2:SUS-ETMX_OLYAW_SW1R_bit13 Off On H2:SUS-ETMY_OLPIT_SW1R 820.000000 13108.000000 H2:SUS-ETMY_OLPIT_SW1R_bit12 Off On H2:SUS-ETMY_OLPIT_SW1R_bit13 Off On H2:SUS-ETMY_OLYAW_SW1R 820.000000 13108.000000 H2:SUS-ETMY_OLYAW_SW1R_bit12 Off On H2:SUS-ETMY_OLYAW_SW1R_bit13 Off On H2:SUS-ITMX_OLPIT_SW1R 820.000000 13108.000000 H2:SUS-ITMX_OLPIT_SW1R_bit12 Off On H2:SUS-ITMX_OLPIT_SW1R_bit13 Off On H2:SUS-ITMX_OLYAW_SW1R 820.000000 13108.000000 H2:SUS-ITMX_OLYAW_SW1R_bit12 Off On H2:SUS-ITMX_OLYAW_SW1R_bit13 Off On H2:SUS-ITMY_OLPIT_SW1R 820.000000 13108.000000 H2:SUS-ITMY_OLPIT_SW1R_bit12 Off On H2:SUS-ITMY_OLPIT_SW1R_bit13 Off On H2:SUS-ITMY_OLYAW_SW1R 820.000000 13108.000000 H2:SUS-ITMY_OLYAW_SW1R_bit12 Off On H2:SUS-ITMY_OLYAW_SW1R_bit13 Off On H2:SUS-RM_OLPIT_SW1R 820.000000 13108.000000 H2:SUS-RM_OLPIT_SW1R_bit12 Off On H2:SUS-RM_OLPIT_SW1R_bit13 Off On H2:SUS-RM_OLYAW_SW1R 820.000000 13108.000000 H2:SUS-RM_OLYAW_SW1R_bit12 Off On H2:SUS-RM_OLYAW_SW1R_bit13 Off On ======== Changes, seg 206 (731738189-731743210) --> 207 (731754702-731759260) H2:SUS-FMX_OLPIT_GAIN -800.000000 -930.000000 H2:SUS-FMX_OLYAW_GAIN -800.000000 -930.000000 H2:SUS-FMY_OLYAW_GAIN 1100.000000 1150.000000 H2:SUS-ITMX_OLYAW_GAIN -1260.000000 -1580.000000 H2:SUS-ITMY_OLYAW_GAIN -1100.000000 -1200.000000 H2:SUS-MMT3_OLPIT_GAIN -3500.000000 -4100.000000 H2:SUS-MMT3_OLYAW_GAIN -3500.000000 -4550.000000 H2:SUS-RM_OLPIT_GAIN 500.000000 650.000000 H2:SUS-RM_OLYAW_GAIN -400.000000 -540.000000 ** Optical lever servo changes to give low damp low frequency angular motion. Slight touch up of optical lever servo gains. None of it harms the science mode running or changes couplings significantly. ============================================================================== ======== Changes, seg 208 (731760312-731760390) --> 209 (731849043-731851693) H2:SUS-ETMX_LLPOS_GAIN 0.856000 0.872000 H2:SUS-ETMX_LRPOS_GAIN 0.878000 0.944000 H2:SUS-ETMX_ULPOS_GAIN 1.121000 1.054000 H2:SUS-ETMX_URPOS_GAIN 1.144000 1.126705 H2:SUS-ETMY_LLPOS_GAIN 0.795000 0.849000 H2:SUS-ETMY_LRPOS_GAIN 0.733000 0.793644 H2:SUS-ETMY_URPOS_GAIN 1.142000 1.150936 ======== Changes, seg 392 (734008418-734014036) --> 393 (734091305-734091509) H2:LSC-MICH_Name09 (blank) Cheby60 H2:SUS-ETMY_LRPOS_GAIN 0.793644 0.794000 H2:SUS-ETMY_URPOS_GAIN 1.150936 1.151000 ======== Changes, seg 325 (733324228-733337258) --> 326 (733357084-733361867) H2:LSC-AS1_I_SW2R_bit8 On Off H2:SUS-ETMY_URPOS_GAIN 1.150936 1.151000 ** ETM POS GAIN Changes the strain calibrations. Affects all science mode segments after Seg208. (March 16th and beyond). Needs to be corrected for by the calibration team.