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S2/S3 calibration

S2/S3 calibration. Gabriela Gonz ález, Louisiana State University Justin Garofoli, Michael Landry , Luca Matone, Hugh Radkins (LHO), Rana Adhikari, Peter Fritschel (MIT), Szabi Marka, Peter Shawhan, Patrick Sutton (Caltech), Brian O’Reilly (LLO) Plus

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S2/S3 calibration

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  1. S2/S3 calibration Gabriela González, Louisiana State University Justin Garofoli, Michael Landry, Luca Matone, Hugh Radkins (LHO), Rana Adhikari, Peter Fritschel (MIT), Szabi Marka, Peter Shawhan, Patrick Sutton (Caltech), Brian O’Reilly (LLO) Plus Xavier Siemens (UWM), Martin Hewittson (GEO) (welcome!) LIGO Science Collaboration meeting, March 16 2004 March 17, 2004

  2. interferometer digital filters pendulum DARM_ERR D(f) Frequency dependent calibration: key formulas Optical gain Digital gain Open loop gain March 17, 2004

  3. sensing function (modeled, gain inferred) Open loop gain (measured) Digital gain (known) Measurement and modeling DC gain (measured) Pendulum (modeled) At a reference time (2-3 times in science run): inferred (SenseMon) Measured(SenseMon) In frames March 17, 2004

  4. S2 calibration: V3 (final) http://blue.ligo-wa.caltech.edu/engrun/Calib_Home/ Rana’s, Peter’s Matlab Models: L1IFOparams.m, H1IFOparams.m, H2IFOparams.m, LSCModel.m are used by Mike, Brian, Gaby to produce reference functions … S02-H1-CAL-OLOOP_GAIN-734073939.txt.gz S02-H1-CAL-CAV_GAIN-734073939.txt.gz S02-H1-CAL-RESPONSE-734073939.txt.gz that Patrick’s SenseMon (and Gaby afterwards) uses to produce alphas, betas…L1Alpha.Beta.txt, H1AlphaBeta.txt, H2AlphaBeta.txt (Peter Fritschel: H1AlphaBetaSmooth.txt) and Duncan Brown converts everything into frames…H-CAL_REF_V03-734073939-64.gwf H-CAL_FAC_V03-729273600-5094000.gwf March 17, 2004

  5. S2 noise curves http://www.ligo.caltech.edu/~lazz/distribution/LSC_Data/ strain/rtHz Hertz March 17, 2004

  6. L1 a, b <0.7% 3% March 17, 2004

  7. L1 a, b March 17, 2004

  8. H1 a, b 10% 3% March 17, 2004

  9. Magnitude: S2 L1 errors Mike Landry, Brian O’Reilly Preliminary! Da/a~3% March 17, 2004

  10. Phase: S2 L1 errors Mike Landry, Brian O’Reilly Preliminary! Da/a~3% March 17, 2004

  11. Magnitude: S2 H1 errors Early epoch: Da/a~10% Mike Landry, Brian O’Reilly Preliminary! March 17, 2004

  12. Magnitude: S2 H1 errors Final epoch: Da/a~3% Mike Landry, Brian O’Reilly Preliminary! March 17, 2004

  13. Phase: S2 H1 errors Early epoch: Da/a~10% Mike Landry, Brian O’Reilly Preliminary! March 17, 2004

  14. Phase: S2 H1 errors Final epoch: Da/a~3% Mike Landry, Brian O’Reilly Preliminary! March 17, 2004

  15. interferometer digital filters pendulum DARM_ERR D(f) S3 calibration: dynamic b Optical gain Digital gain Open loop gain March 17, 2004

  16. S3 calibration : dynamic b A dynamic b: calculated at 16384Hz, low pass filtered at ~0.5 Hz, Read at ~8 Hz(?),written at 16 Hz, averaged by SenseMon at 1/60s L1 – S3 ab b a Notice the amplitude and time scale!! March 17, 2004

  17. S3 online H1 a, b Patrick Sutton March 17, 2004

  18. S3 online H1 a, b Patrick Sutton March 17, 2004

  19. S3 calibration: V1 (Jan 22, 2004) March 17, 2004

  20. S3 online Calibration Patrick Sutton Gets better if V1 is used! March 17, 2004

  21. S3 online Calibration Patrick Sutton Gets better if V1 is used! March 17, 2004

  22. S3 H1 Calibration March 17, 2004

  23. Calibration Status • S2 calibration: • final V3 version posted Sept’03 • document (with errors) in preparation • S3 calibration: • Online (E10) calibration • V1 calibration, posted on Jan’04 • V2, final calibration (coming): • calibration for LHO injection times (V1.1?) • models representing better the actual hardware • S4 calibration: • Online info from Sensemon (P. Sutton) • On line time-domain calibration (X. Siemens) • faster tracking of line amplitudes • photon calibrator March 17, 2004

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