Centering OSEMs on all stages as per instruction in LHO aLOG 60494 https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=60494 - Turn on damping loops and alignment sliders to reproduce a good alignment (according to M2 and M3 OSEMs) from a time during May '21's nominal low noise time. Using time when in nominal low noise, 2021-05-09_2000UTC. H1:SUS-SRM_M1_OPTICALIGN_P_OFFSET 1738.28 H1:SUS-SRM_M1_OPTICALIGN_Y_OFFSET -3296.41 Also turned on LOCK L P Y OFFSETs in order to replicate what was being sent out from global length and alignment control. Had to turn off all filtering in the M1 bank, since there's a bunch of gain and filtering in those banks that confuse how to create the right level of output. - Record DAC output request for the given alignment slider value. Confirmed that T1, T2, T3, LF, RT, SD M1 COILOUTF IN values were rouhgly the same: z avg 10 H1:SUS-SRM_M1_LOCK_L_OUTPUT H1:SUS-SRM_M1_LOCK_P_OUTPUT H1:SUS-SRM_M1_LOCK_Y_OUTPUT H1:SUS-SRM_M1_OPTICALIGN_P_OUTPUT H1:SUS-SRM_M1_OPTICALIGN_Y_OUTPUT H1:SUS-SRM_M1_COILOUTF_T1_INMON H1:SUS-SRM_M1_COILOUTF_T2_INMON H1:SUS-SRM_M1_COILOUTF_T3_INMON H1:SUS-SRM_M1_COILOUTF_LF_INMON H1:SUS-SRM_M1_COILOUTF_RT_INMON H1:SUS-SRM_M1_COILOUTF_SD_INMON H1:SUS-SRM_M1_LOCK_L_OUTPUT -5000.0 H1:SUS-SRM_M1_LOCK_P_OUTPUT 10.0 H1:SUS-SRM_M1_LOCK_Y_OUTPUT -120.0 H1:SUS-SRM_M1_OPTICALIGN_P_OUTPUT 3259.4580078125 H1:SUS-SRM_M1_OPTICALIGN_Y_OUTPUT -8836.365234375 H1:SUS-SRM_M1_COILOUTF_T1_INMON -0.02408373951911926 H1:SUS-SRM_M1_COILOUTF_T2_INMON 54769.114453125 H1:SUS-SRM_M1_COILOUTF_T3_INMON -54769.158984375 H1:SUS-SRM_M1_COILOUTF_LF_INMON 53488.034765625 H1:SUS-SRM_M1_COILOUTF_RT_INMON -58488.005859375 H1:SUS-SRM_M1_COILOUTF_SD_INMON -0.3948524951934814 - Unlocked the SUS - Measured a few averages of each DOF to confirm free. - Record values for M1, M2, and M3 OSEM positions (in terms of OSEMINF INMON ADC counts *and* OSEMINF OUTMON microns). z avg 10 H1:SUS-SRM_M1_OSEMINF_T1_INMON H1:SUS-SRM_M1_OSEMINF_T2_INMON H1:SUS-SRM_M1_OSEMINF_T3_INMON H1:SUS-SRM_M1_OSEMINF_LF_INMON H1:SUS-SRM_M1_OSEMINF_RT_INMON H1:SUS-SRM_M1_OSEMINF_SD_INMON H1:SUS-SRM_M1_OSEMINF_T1_OUTPUT H1:SUS-SRM_M1_OSEMINF_T2_OUTPUT H1:SUS-SRM_M1_OSEMINF_T3_OUTPUT H1:SUS-SRM_M1_OSEMINF_LF_OUTPUT H1:SUS-SRM_M1_OSEMINF_RT_OUTPUT H1:SUS-SRM_M1_OSEMINF_SD_OUTPUT H1:SUS-SRM_M1_OSEMINF_T1_INMON 14770.98193359375 H1:SUS-SRM_M1_OSEMINF_T2_INMON 16697.180078125 H1:SUS-SRM_M1_OSEMINF_T3_INMON 11096.10732421875 H1:SUS-SRM_M1_OSEMINF_LF_INMON 19287.0314453125 H1:SUS-SRM_M1_OSEMINF_RT_INMON 6436.756201171875 H1:SUS-SRM_M1_OSEMINF_SD_INMON 13375.11533203125 H1:SUS-SRM_M1_OSEMINF_T1_OUTPUT 34.26913948059082 H1:SUS-SRM_M1_OSEMINF_T2_OUTPUT 108.87898559570313 H1:SUS-SRM_M1_OSEMINF_T3_OUTPUT -79.03852615356445 H1:SUS-SRM_M1_OSEMINF_LF_OUTPUT 136.3566101074219 H1:SUS-SRM_M1_OSEMINF_RT_OUTPUT -178.4944076538086 H1:SUS-SRM_M1_OSEMINF_SD_OUTPUT 16.898248863220214 z avg 10 H1:SUS-SRM_M2_OSEMINF_UL_INMON H1:SUS-SRM_M2_OSEMINF_LL_INMON H1:SUS-SRM_M2_OSEMINF_UR_INMON H1:SUS-SRM_M2_OSEMINF_LR_INMON H1:SUS-SRM_M2_OSEMINF_UL_OUTPUT H1:SUS-SRM_M2_OSEMINF_LL_OUTPUT H1:SUS-SRM_M2_OSEMINF_UR_OUTPUT H1:SUS-SRM_M2_OSEMINF_LR_OUTPUT H1:SUS-SRM_M2_OSEMINF_UL_INMON 20079.5560546875 H1:SUS-SRM_M2_OSEMINF_LL_INMON 13998.13486328125 H1:SUS-SRM_M2_OSEMINF_UR_INMON 8101.49130859375 H1:SUS-SRM_M2_OSEMINF_LR_INMON 1917.5439331054688 H1:SUS-SRM_M2_OSEMINF_UL_OUTPUT 227.23746643066406 H1:SUS-SRM_M2_OSEMINF_LL_OUTPUT 71.64925003051758 H1:SUS-SRM_M2_OSEMINF_UR_OUTPUT -117.08901443481446 H1:SUS-SRM_M2_OSEMINF_LR_OUTPUT -288.2623321533203 z avg 10 H1:SUS-SRM_M3_OSEMINF_UL_INMON H1:SUS-SRM_M3_OSEMINF_LL_INMON H1:SUS-SRM_M3_OSEMINF_UR_INMON H1:SUS-SRM_M3_OSEMINF_LR_INMON H1:SUS-SRM_M3_OSEMINF_UL_OUTPUT H1:SUS-SRM_M3_OSEMINF_LL_OUTPUT H1:SUS-SRM_M3_OSEMINF_UR_OUTPUT H1:SUS-SRM_M3_OSEMINF_LR_OUTPUT H1:SUS-SRM_M3_OSEMINF_UL_INMON 19963.9279296875 H1:SUS-SRM_M3_OSEMINF_LL_INMON 16147.04931640625 H1:SUS-SRM_M3_OSEMINF_UR_INMON 12426.19658203125 H1:SUS-SRM_M3_OSEMINF_LR_INMON 1679.7779418945313 H1:SUS-SRM_M3_OSEMINF_UL_OUTPUT 278.4105529785156 H1:SUS-SRM_M3_OSEMINF_LL_OUTPUT 139.50655975341797 H1:SUS-SRM_M3_OSEMINF_UR_OUTPUT 25.631100845336913 H1:SUS-SRM_M3_OSEMINF_LR_OUTPUT -293.60796508789065 - Removed lowest stage AR side baffle. - Recenter M2 UL, UR, and LR AOSEMs *without remeasuring the open light current, nor updating OSEMINF gains or offsets* Successful centering of M2 stage. Ended up just adjusting all of them, 'cause why not. Putting M2 baffle back on. Taking off M3 baffle. - Recenter M3 UL and LR AOSEMs *without remeasuring the open light current, nor updating gains or offsets* Centered LR, LL, and UL. (UR was difficult to access anyways.) Successful centering of M3 OSEMS. Putting on all baffles. - Record newly centered values of M2 and M3 OSEM positions with damping loops and alignment sliders ON. z avg 20 H1:SUS-SRM_M1_OSEMINF_T1_INMON H1:SUS-SRM_M1_OSEMINF_T2_INMON H1:SUS-SRM_M1_OSEMINF_T3_INMON H1:SUS-SRM_M1_OSEMINF_LF_INMON H1:SUS-SRM_M1_OSEMINF_RT_INMON H1:SUS-SRM_M1_OSEMINF_SD_INMON H1:SUS-SRM_M1_OSEMINF_T1_OUTPUT H1:SUS-SRM_M1_OSEMINF_T2_OUTPUT H1:SUS-SRM_M1_OSEMINF_T3_OUTPUT H1:SUS-SRM_M1_OSEMINF_LF_OUTPUT H1:SUS-SRM_M1_OSEMINF_RT_OUTPUT H1:SUS-SRM_M1_OSEMINF_SD_OUTPUT H1:SUS-SRM_M2_OSEMINF_UL_INMON H1:SUS-SRM_M2_OSEMINF_LL_INMON H1:SUS-SRM_M2_OSEMINF_UR_INMON H1:SUS-SRM_M2_OSEMINF_LR_INMON H1:SUS-SRM_M2_OSEMINF_UL_OUTPUT H1:SUS-SRM_M2_OSEMINF_LL_OUTPUT H1:SUS-SRM_M2_OSEMINF_UR_OUTPUT H1:SUS-SRM_M2_OSEMINF_LR_OUTPUT H1:SUS-SRM_M3_OSEMINF_UL_INMON H1:SUS-SRM_M3_OSEMINF_LL_INMON H1:SUS-SRM_M3_OSEMINF_UR_INMON H1:SUS-SRM_M3_OSEMINF_LR_INMON H1:SUS-SRM_M3_OSEMINF_UL_OUTPUT H1:SUS-SRM_M3_OSEMINF_LL_OUTPUT H1:SUS-SRM_M3_OSEMINF_UR_OUTPUT H1:SUS-SRM_M3_OSEMINF_LR_OUTPUT H1:SUS-SRM_M1_OSEMINF_T1_INMON 14728.89345703125 H1:SUS-SRM_M1_OSEMINF_T2_INMON 16681.959375000006 H1:SUS-SRM_M1_OSEMINF_T3_INMON 11095.558837890625 H1:SUS-SRM_M1_OSEMINF_LF_INMON 19305.36533203125 H1:SUS-SRM_M1_OSEMINF_RT_INMON 6482.0212890625 H1:SUS-SRM_M1_OSEMINF_SD_INMON 13364.92373046875 H1:SUS-SRM_M1_OSEMINF_T1_OUTPUT 33.172542572021484 H1:SUS-SRM_M1_OSEMINF_T2_OUTPUT 108.4602767944336 H1:SUS-SRM_M1_OSEMINF_T3_OUTPUT -79.08293571472169 H1:SUS-SRM_M1_OSEMINF_LF_OUTPUT 136.7750015258789 H1:SUS-SRM_M1_OSEMINF_RT_OUTPUT -177.3217414855957 H1:SUS-SRM_M1_OSEMINF_SD_OUTPUT 16.647684288024898 H1:SUS-SRM_M2_OSEMINF_UL_INMON 11996.698193359374 H1:SUS-SRM_M2_OSEMINF_LL_INMON 12426.131884765626 H1:SUS-SRM_M2_OSEMINF_UR_INMON 12589.083691406251 H1:SUS-SRM_M2_OSEMINF_LR_INMON 11204.81640625 H1:SUS-SRM_M2_OSEMINF_UL_OUTPUT -5.116056561470032 H1:SUS-SRM_M2_OSEMINF_LL_OUTPUT 24.30085515975952 H1:SUS-SRM_M2_OSEMINF_UR_OUTPUT 11.918917083740235 H1:SUS-SRM_M2_OSEMINF_LR_OUTPUT 10.129777193069458 H1:SUS-SRM_M3_OSEMINF_UL_INMON 10689.31259765625 H1:SUS-SRM_M3_OSEMINF_LL_INMON 12287.908935546877 H1:SUS-SRM_M3_OSEMINF_UR_INMON 12516.779345703126 H1:SUS-SRM_M3_OSEMINF_LR_INMON 10606.788427734375 H1:SUS-SRM_M3_OSEMINF_UL_OUTPUT -13.552354907989502 H1:SUS-SRM_M3_OSEMINF_LL_OUTPUT 22.39173173904419 H1:SUS-SRM_M3_OSEMINF_UR_OUTPUT 28.3157696723938 H1:SUS-SRM_M3_OSEMINF_LR_OUTPUT 6.120454263687134 - Turn OFF damping loops and alignment slider values. Done, also LOCK filter bank output too. - Record not-yet-centered M1, and newly centered M2, and M3 OSEM positions with alignment sliders OFF (confirming they're still in range). H1:SUS-SRM_M1_OSEMINF_T1_INMON 15362.006298828124 H1:SUS-SRM_M1_OSEMINF_T2_INMON 14389.5212890625 H1:SUS-SRM_M1_OSEMINF_T3_INMON 13894.187939453124 H1:SUS-SRM_M1_OSEMINF_LF_INMON 13874.788037109374 H1:SUS-SRM_M1_OSEMINF_RT_INMON 14191.84091796875 H1:SUS-SRM_M1_OSEMINF_SD_INMON 13786.949267578126 H1:SUS-SRM_M1_OSEMINF_T1_OUTPUT 49.63860187530518 H1:SUS-SRM_M1_OSEMINF_T2_OUTPUT 45.45247211456299 H1:SUS-SRM_M1_OSEMINF_T3_OUTPUT -10.772857809066773 H1:SUS-SRM_M1_OSEMINF_LF_OUTPUT -0.21802769787609572 H1:SUS-SRM_M1_OSEMINF_RT_OUTPUT 28.098816871643066 H1:SUS-SRM_M1_OSEMINF_SD_OUTPUT 28.23252248764038 H1:SUS-SRM_M2_OSEMINF_UL_INMON 3934.7870971679686 H1:SUS-SRM_M2_OSEMINF_LL_INMON 10840.108203125 H1:SUS-SRM_M2_OSEMINF_UR_INMON 16692.96669921875 H1:SUS-SRM_M2_OSEMINF_LR_INMON 20266.55205078125 H1:SUS-SRM_M2_OSEMINF_UL_OUTPUT -236.88800354003905 H1:SUS-SRM_M2_OSEMINF_LL_OUTPUT -23.508173751831055 H1:SUS-SRM_M2_OSEMINF_UR_OUTPUT 129.86458206176758 H1:SUS-SRM_M2_OSEMINF_LR_OUTPUT 301.26384887695315 H1:SUS-SRM_M3_OSEMINF_UL_INMON 4094.2645874023438 H1:SUS-SRM_M3_OSEMINF_LL_INMON 11026.912646484376 H1:SUS-SRM_M3_OSEMINF_UR_INMON 16166.357470703126 H1:SUS-SRM_M3_OSEMINF_LR_INMON 20015.10888671875 H1:SUS-SRM_M3_OSEMINF_UL_OUTPUT -221.18203659057616 H1:SUS-SRM_M3_OSEMINF_LL_OUTPUT -15.911177682876588 H1:SUS-SRM_M3_OSEMINF_UR_OUTPUT 138.5509407043457 H1:SUS-SRM_M3_OSEMINF_LR_OUTPUT 321.96976776123046 - Back off *all* M1 OSEMs, and remeasure open light current values, but *do not update the OSEMINF gains or offsets*. H1:SUS-SRM_M1_OSEMINF_T1_INMON 20584.987825520835 H1:SUS-SRM_M1_OSEMINF_T2_INMON 18995.546354166665 H1:SUS-SRM_M1_OSEMINF_T3_INMON 22119.497526041672 H1:SUS-SRM_M1_OSEMINF_LF_INMON 20831.334049479166 H1:SUS-SRM_M1_OSEMINF_RT_INMON 21110.370442708332 H1:SUS-SRM_M1_OSEMINF_SD_INMON 18715.383333333335 H1:SUS-SRM_M1_OSEMINF_T1_OUTPUT 185.53909962972006 H1:SUS-SRM_M1_OSEMINF_T2_OUTPUT 172.06350809733073 H1:SUS-SRM_M1_OSEMINF_T3_OUTPUT 189.997683207194 H1:SUS-SRM_M1_OSEMINF_LF_OUTPUT 175.28751576741536 H1:SUS-SRM_M1_OSEMINF_RT_OUTPUT 212.48450215657553 H1:SUS-SRM_M1_OSEMINF_SD_OUTPUT 163.46315358479814 - Recenter all OSEMs, but **account for the change in position, between alignment sliders *on* vs *off*.** M1_offsets_on = 14728 16681 11095 19305 6482 13364 33.172 108.46 -79.083 136.78 -177.32 16.648 M1_offsets_off = 15362 14389 13894 13874 14191 13786 49.639 45.452 -10.773 -0.218 28.099 28.233 M1_offsets_off - M1_offsets_on ans = 634 -2292 2799 -5431 7709 422 16.466 << target these values for centering with sliders OFF. -63.008 68.31 -136.99 205.42 11.585 Did so, within +/- 5 um. - Turn on alignment offsets, and confirm that you've done math right, and the M1 OSEMs are indeed centered, and confirm that the M2 and M3 OSEMs are in the same position. SUCCESS. z avg 20 H1:SUS-SRM_M1_OSEMINF_T1_INMON H1:SUS-SRM_M1_OSEMINF_T2_INMON H1:SUS-SRM_M1_OSEMINF_T3_INMON H1:SUS-SRM_M1_OSEMINF_LF_INMON H1:SUS-SRM_M1_OSEMINF_RT_INMON H1:SUS-SRM_M1_OSEMINF_SD_INMON H1:SUS-SRM_M1_OSEMINF_T1_OUTPUT H1:SUS-SRM_M1_OSEMINF_T2_OUTPUT H1:SUS-SRM_M1_OSEMINF_T3_OUTPUT H1:SUS-SRM_M1_OSEMINF_LF_OUTPUT H1:SUS-SRM_M1_OSEMINF_RT_OUTPUT H1:SUS-SRM_M1_OSEMINF_SD_OUTPUT H1:SUS-SRM_M2_OSEMINF_UL_INMON H1:SUS-SRM_M2_OSEMINF_LL_INMON H1:SUS-SRM_M2_OSEMINF_UR_INMON H1:SUS-SRM_M2_OSEMINF_LR_INMON H1:SUS-SRM_M2_OSEMINF_UL_OUTPUT H1:SUS-SRM_M2_OSEMINF_LL_OUTPUT H1:SUS-SRM_M2_OSEMINF_UR_OUTPUT H1:SUS-SRM_M2_OSEMINF_LR_OUTPUT H1:SUS-SRM_M3_OSEMINF_UL_INMON H1:SUS-SRM_M3_OSEMINF_LL_INMON H1:SUS-SRM_M3_OSEMINF_UR_INMON H1:SUS-SRM_M3_OSEMINF_LR_INMON H1:SUS-SRM_M3_OSEMINF_UL_OUTPUT H1:SUS-SRM_M3_OSEMINF_LL_OUTPUT H1:SUS-SRM_M3_OSEMINF_UR_OUTPUT H1:SUS-SRM_M3_OSEMINF_LR_OUTPUT H1:SUS-SRM_M1_OSEMINF_T1_INMON 13247.833447265624 H1:SUS-SRM_M1_OSEMINF_T2_INMON 13009.21162109375 H1:SUS-SRM_M1_OSEMINF_T3_INMON 13995.678466796875 H1:SUS-SRM_M1_OSEMINF_LF_INMON 14313.1486328125 H1:SUS-SRM_M1_OSEMINF_RT_INMON 14922.70283203125 H1:SUS-SRM_M1_OSEMINF_SD_INMON 13063.9953125 H1:SUS-SRM_M1_OSEMINF_T1_OUTPUT -5.3658665180206295 H1:SUS-SRM_M1_OSEMINF_T2_OUTPUT 7.504372882843017 H1:SUS-SRM_M1_OSEMINF_T3_OUTPUT -8.26853837966919 H1:SUS-SRM_M1_OSEMINF_LF_OUTPUT 10.893163061141967 H1:SUS-SRM_M1_OSEMINF_RT_OUTPUT 47.61681060791015 H1:SUS-SRM_M1_OSEMINF_SD_OUTPUT 8.415767669677734 H1:SUS-SRM_M2_OSEMINF_UL_INMON 11656.7916015625 H1:SUS-SRM_M2_OSEMINF_LL_INMON 12153.234130859375 H1:SUS-SRM_M2_OSEMINF_UR_INMON 12019.728027343748 H1:SUS-SRM_M2_OSEMINF_LR_INMON 10718.9357421875 H1:SUS-SRM_M2_OSEMINF_UL_OUTPUT -14.881842041015625 H1:SUS-SRM_M2_OSEMINF_LL_OUTPUT 16.09163370132446 H1:SUS-SRM_M2_OSEMINF_UR_OUTPUT -4.447019100189209 H1:SUS-SRM_M2_OSEMINF_LR_OUTPUT -5.466517090797424 H1:SUS-SRM_M3_OSEMINF_UL_INMON 10377.210205078123 H1:SUS-SRM_M3_OSEMINF_LL_INMON 11982.928662109374 H1:SUS-SRM_M3_OSEMINF_UR_INMON 11957.360498046877 H1:SUS-SRM_M3_OSEMINF_LR_INMON 10074.894775390625 H1:SUS-SRM_M3_OSEMINF_UL_OUTPUT -23.383956813812254 H1:SUS-SRM_M3_OSEMINF_LL_OUTPUT 13.132697820663452 H1:SUS-SRM_M3_OSEMINF_UR_OUTPUT 11.40431580543518 H1:SUS-SRM_M3_OSEMINF_LR_OUTPUT -11.760715007781982 3 more BNS detections in O4 because of this. And, to add *a* data point to the BOSEM LED Decay point, comparing 2014 OLC (dug up from LHO aLOG 60477) against 2021, OLC_2014 = [26908 25472 28670 27764 26272 25516]' OLC_2014 = 26908 25472 28670 27764 26272 25516 OLC_2014 * (40/2^16) * (1/(240e3)) * 1e6 ans = 68.431 64.779 72.912 70.608 66.813 64.891 OLC_2021 = [ 20585 18996 22119 20831 21110 18715]' OLC_2021 = 20585 18996 22119 20831 21110 18715 OLC_2014 - OLC_2021 ans = 6323 6476 6551 6933 5162 6801 (OLC_2014 - OLC_2021) * (40/2^16) * (1/(240e3)) * 1e6 ans = 16.08 16.469 16.66 17.632 13.128 (OLC_2014 - OLC_2021) ./ OLC_2014 ans = 0.23499 0.25424 0.2285 0.24971 0.19648 0.26654 17.296