% List of lines for Virgo V1 during O2 - 20190209, version 1 % % Column 1 - peak frequency (Hz) % Column 2 - lower frequency (Hz) % Column 3 - frequency bandwidth (Hz) % Column 4 - origin of the line if known % Note: elog refers to the relevant Virgo electronic logbook entry % [https://logbook.virgo-gw.eu/virgo] % The line is observed in the frequency interval [lower freq, lower freq + bandwidth], and % the peak frequency is where its significance is maximum. % % Acronyms: % BS = Beam Splitter % DAQ = Data acquisition % DARM = Differential Arm Length % LVDT = Linear Variable Differential Transformer % MAR = MARionetta % MIR = MIRrror % NE = North End % NI = North Input % OMC = Output mode cleaner % PCAL = Photon Calibrator % PR = Power Recycling % SDB = Suspended Detection Bench % TM = Test Mass % TX = theta_x % TY = theta_y % WE = West End % WEB = West End Building % WI = West Input 8.2 8.188 0.019 Alignment dither line NE TX, elog 37605 8.401 8.378 0.056 Unknown 8.702 8.688 0.025 Alignment dither line WE TX, elog 37605 9.301 9.294 0.013 Alignment dither line NE TY, elog 37605 9.5 9.488 0.022 Alignment dither line WI TX, elog 37605 9.9 9.888 0.025 Alignment dither line WE TY, elog 37605 10.048 10.047 0.004 Unknown 10.5 10.495 0.011 Alignment dither WI TY, elog 37605 10.649 10.647 0.004 Unknown 11.5 11.489 0.023 Alignment dither NI TX, elog 37605 11.965 11.951 0.026 Unknown 12.047 12.038 0.015 Unknown 12.5 12.494 0.014 Alignment dither NI TY, elog 37605 12.649 12.645 0.012 Unknown 15.8 15.8 0.001 Calibration line - WE MAR 16.301 16.296 0.009 Calibration line - BS MAR 16.8 16.799 0.002 Calibration line - NE MAR 18.592 18.576 0.03 Fan of air conditioner CEB clean rooms 36.3 36.294 0.012 Calibration line - PCAL WEB 39.984 39.984 0.001 Unknown 48.051 48.046 0.02 Unknown 50 49.8 0.4 Electric mains 60.8 60.797 0.008 Calibration line - WE MIR 62.3 62.295 0.011 Calibration line - PR MIR 62.379 62.376 0.007 Unknown 62.801 62.796 0.01 Calibration line - BS MIR 63.3 63.297 0.008 Calibration line - NE MIR 66.301 66.298 0.005 DAQ, beating of OMC2 dither line and SDB1 LVDT, elog 38533 67.077 67.074 0.005 Unknown 87.1 87.095 0.012 Calibration line - DARM 97.001 96.999 0.003 DAQ, beating SDB1 LVDT dither lines, elog 38533 97.4 97.14 0.3 Unknown 99.25 99.2 0.1 Sideband of mains 2nd harmonics (100 Hz) observed in magnetometers 99.381 99.373 0.013 Unknown 100 99.8 0.4 Mains (2nd harmonic) 100.75 100.7 0.1 Sideband of mains 2nd harmonics (100 Hz) observed in magnetometers 101.4 101 0.8 Frequency noise 111.108 111.107 0.004 Comb 55.5 Hz (2nd harmonics), elog 43209 118.7 118.698 0.004 Unknown 149.2 149.05 0.1 Sideband of mains 3rd harmonics (150 Hz) observed in magnetometers 150 149.7 0.6 Mains (3rd harmonic) 150.8 150.75 0.1 Sideband of mains 3rd harmonics (150 Hz) observed in magnetometers 159.868 159.863 0.008 Unknown 165.3 165.299 0.002 DAQ, beating of OMC2 dither line and SDB1 LVDT, elog 38533 166.661 166.659 0.007 Comb 55.5 Hz (3rd harmonic) 180.955 180.954 0.002 Unknown 198.001 197.999 0.002 DAQ, beating SDB1 LVDT dither lines, elog 38533 199.001 198.998 0.006 DAQ, beating SDB1 LVDT dither lines, elog 38533 199.834 199.833 0.005 Unknown 219.235 219.215 0.021 PR violin mode, elog 34255 1222.214 222.211 0.007 Comb 55.5 Hz (4th harmonic) 230.926 230.925 0.007 Unknown 231.702 231.695 0.01 DAQ, beating of OMC2 dither line and SDB1 LVDT, elog 38533 232.479 232.47 0.013 Unknown 276.258 276.251 0.014 BS violin mode, elog 44388 276.732 276.724 0.018 BS violin mode, elog 44388 276.768 276.765 0.01 BS violin mode, elog 44388 277.768 277.767 0.004 Comb 55.5 Hz (5th harmonic) 278.959 278.952 0.015 BS violin mode, elog 44388 279.011 279.007 0.011 BS violin mode, elog 44388 279.1 279.095 0.008 BS violin mode, elog 44388 279.122 279.113 0.015 BS violin mode, elog 44388 296 295.998 0.005 DAQ, beating of SDB1 LVDT dither lines, elog 38533 % 306.63 to 314.53 First violin modes (up to 32 peaks) 307.353 307.351 0.004 TM violin mode 1st 307.516 307.516 0.005 TM violin mode 1st 309.328 309.319 0.026 TM violin mode 1st 310.125 310.125 0.003 TM violin mode 1st 310.431 310.431 0.003 TM violin mode 1st 311.77 311.77 0.002 TM violin mode 1st 313.604 313.604 0.002 TM violin mode 1st 314.479 314.479 0.001 TM violin mode 1st 355.8 355.798 0.012 Calibration line - WE MIR 356.302 356.294 0.014 Calibration line - PCAL WEB 357.3 357.295 0.011 Calibration line - BS MIR 357.378 357.375 0.012 Sideband of calibration line 357.801 357.797 0.007 Calibration line - BS MIR 358.3 358.295 0.009 Calibration line - NE MIR 397 396.998 0.005 DAQ, beating of SDB1 LVDT dither lines, elog 38533 402 402 0.001 DAQ, beating of SDB1 LVDT dither lines, elog 38533 412.452 412.449 0.007 Turbo pump BS-PR link 430.7 430.7 0.002 DAQ, beating of OMC2 dither line and SDB1 LVDT, elog 38533 480.052 480.05 0.005 Turbo pump BS-PR link 553.465 553.461 0.006 BS violin mode % 613.245 to 629.06 Second violin modes (up to 32 peaks) 614.763 614.763 0.004 TM violin mode 2nd 617.651 617.651 0.002 TM violin mode 2nd 618.733 618.733 0.001 TM violin mode 2nd 620.283 620.283 0.001 TM violin mode 2nd 623.279 623.277 0.004 TM violin mode 2nd 633.7 633.699 0.002 DAQ, beating of OMC2 dither line and SDB1 LVDT (elog 38533) % 919.94 to 943.65 Third violin modes (up to 32 peaks) 934.964 934.963 0.002 TM violin mode 3rd 943.5 943.5 0.001 TM violin mode 3rd 1110.153 1110.141 0.025 Sideband of calibration line SSFS 1110.579 1110.57 0.02 Sideband of calibration line SSFS 1111.001 1110.995 0.012 Calibration line - SSFS 1111.422 1111.416 0.014 sideband of Calibration line SSFS 1111.851 1111.836 0.029 sideband of Calibration line SSFS % 1226.66 to 1258.26 Fourth violin modes (up to 32 peaks) 1226.649 1226.647 0.003 TM violin mode 4th 1237.634 1237.634 0.002 TM violin mode 4th 1240.715 1240.715 0.004 TM violin mode 4th 1241.632 1241.63 0.006 TM violin mode 4th 1241.801 1241.801 0.002 TM violin mode 4th 1241.984 1241.982 0.004 TM violin mode 4th 1245.157 1245.154 0.005 TM violin mode 4th 1246.601 1246.601 0.002 TM violin mode 4th 1246.715 1246.713 0.004 TM violin mode 4th 1247.112 1247.11 0.007 TM violin mode 4th 1247.257 1247.257 0.004 TM violin mode 4th 1254.57 1254.562 0.024 TM violin mode 4th 1254.773 1254.77 0.008 TM violin mode 4th 1256.599 1256.595 0.013 BS mirror butterfly mode, elog 37588 1256.77 1256.763 0.012 TM violin mode 4th 1258.082 1258.073 0.027 TM violin mode 4th 1319.995 1319.995 0.001 Unknown 1425.024 1425.021 0.005 Unknown % 1533.43 to 1572.71 Fifth violin modes 1533.43 1533.418 0.023 TM violin mode 5th 1533.704 1533.691 0.027 TM violin mode 5th 1533.816 1533.81 0.013 TM violin mode 5th 1536.963 1536.959 0.009 TM violin mode 5th 1537.172 1537.161 0.019 TM violin mode 5th 1537.795 1537.784 0.017 TM violin mode 5th 1537.962 1537.948 0.02 TM violin mode 5th 1544.28 1544.256 0.035 TM violin mode 5th 1544.425 1544.423 0.01 TM violin mode 5th 1547.047 1547.04 0.013 TM violin mode 5th 1547.153 1547.14 0.027 TM violin mode 5th 1550.922 1550.922 0.001 TM violin mode 5th 1550.931 1550.924 0.012 TM violin mode 5th 1551.021 1551.014 0.018 TM violin mode 5th 1552.178 1552.168 0.019 TM violin mode 5th 1552.355 1552.348 0.01 TM violin mode 5th 1552.581 1552.567 0.025 TM violin mode 5th 1554.725 1554.725 0.007 TM violin mode 5th 1556.545 1556.536 0.019 TM violin mode 5th 1558.362 1558.355 0.011 TM violin mode 5th 1558.503 1558.498 0.023 TM violin mode 5th 1559.003 1558.995 0.025 TM violin mode 5th 1559.198 1559.187 0.024 TM violin mode 5th 1568.319 1568.305 0.018 TM violin mode 5th 1568.328 1568.328 0.001 TM violin mode 5th 1572.708 1572.696 0.017 TM violin mode 5th 1600.547 1600.547 0.001 Unknown 1609.931 1609.931 0.006 Unknown 1610.544 1610.544 0.001 Unknown 1610.931 1610.924 0.011 Unknown 1620.541 1620.541 0.002 Unknown 1620.95 1620.946 0.008 Unknown 1621.133 1621.132 0.002 Unknown 1621.541 1621.54 0.005 Unknown 1621.948 1621.946 0.008 Unknown 1622.132 1622.131 0.003 Unknown 1622.949 1622.949 0.001 Unknown 1639.944 1639.942 0.004 Unknown 1640.943 1640.942 0.006 Unknown 1641.943 1641.943 0.001 Unknown 1683.524 1683.521 0.005 Unknown 1684.34 1684.339 0.002 Unknown 1684.524 1684.519 0.009 Unknown 1685.523 1685.52 0.007 Unknown 1687.522 1687.52 0.006 Unknown 1688.522 1688.522 0.001 Unknown 1689.521 1689.521 0.002 Unknown 1691.521 1691.52 0.002 Unknown 1694.521 1694.52 0.002 Unknown 1695.52 1695.517 0.008 Unknown 1709.516 1709.515 0.002 Unknown 1711.515 1711.513 0.006 Unknown 1712.515 1712.513 0.006 Unknown 1713.514 1713.512 0.007 Unknown 1734.101 1734.097 0.008 Unknown 1735.101 1735.1 0.002 Unknown 1744.119 1744.117 0.006 Unknown 1745.118 1745.116 0.006 Unknown 1746.118 1746.114 0.009 Unknown 1756.136 1756.136 0.002 Unknown % 1840.32 to 1887.43 Sixth violin modes 1840.323 1840.312 0.019 TM violin mode 6th 1840.627 1840.618 0.017 TM violin mode 6th 1840.758 1840.755 0.008 TM violin mode 6th 1844.438 1844.435 0.007 TM violin mode 6th 1844.693 1844.686 0.018 TM violin mode 6th 1845.51 1845.498 0.02 TM violin mode 6th 1845.708 1845.7 0.014 TM violin mode 6th 1853.282 1853.279 0.011 TM violin mode 6th 1856.647 1856.644 0.005 TM violin mode 6th 1856.774 1856.765 0.015 TM violin mode 6th 1861.31 1861.309 0.006 TM violin mode 6th 1861.42 1861.411 0.014 TM violin mode 6th 1862.766 1862.756 0.014 TM violin mode 6th 1862.997 1862.997 0.004 TM violin mode 6th 1863.278 1863.269 0.013 TM violin mode 6th 1868.027 1868.018 0.018 TM violin mode 6th 1870.182 1870.182 0.006 TM violin mode 6th 1870.359 1870.351 0.012 TM violin mode 6th 1870.97 1870.964 0.01 TM violin mode 6th 1871.215 1871.215 0.002 TM violin mode 6th 1871.224 1871.22 0.008 TM violin mode 6th 1874.541 1874.532 0.011 Sideband of BS mirror drum 1874.969 1874.957 0.032 Sideband of BS mirror drum 1875.391 1875.38 0.028 BS mirror drum mode, elog 37588 1875.799 1875.798 0.03 Sideband of BS mirror drum 1876.252 1876.222 0.039 Sideband of BS mirror drum 1882.131 1882.125 0.01 TM violin mode 6th 1887.431 1887.42 0.016 TM violin mode 6th