LIGO-G040251-00-Z S2 and S3 calibration status Michael Landry LIGO Hanford Observatory for the Calibration team Justin Garofoli, Luca Matone, Hugh Radkins.

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LIGO-G Z S2 and S3 calibration status Michael Landry LIGO Hanford Observatory for the Calibration team Justin Garofoli, Luca Matone, Hugh Radkins (LHO), Rana Adhikari, Peter Fritschel (MIT), Peter Shawhan, Patrick Sutton (Caltech), Brian O’Reilly (LLO), Xavier Siemens (UWM), Andres Rodriguez, Gabriela González (LSU) Martin Hewitson (GEO) LSC Meeting June 6, 2004 Tufts University, MA

LIGO-G Z LSC Meeting 16 Mar IFO review

LIGO-G Z LSC Meeting 16 Mar Outline S2 calibration »Technical document on calibration and errors available at under the Docs section (or, DCC T pdf) »Not final, expect some evolution of document (not calibration!). Additional sections on error estimates of alphas and betas, DC cal methods and sign of calibration. »Total calibration error as a function of frequency posted to webpage, too – UL groups will want to assess cal errors for S2 documents S3 calibration »V2 calibration issued (super cedes V1.1), corrects a series of problems

LIGO-G Z LSC Meeting 16 Mar L1 cal errors, S2 pulsar frequencies

LIGO-G Z LSC Meeting 16 Mar H2

LIGO-G Z LSC Meeting 16 Mar H1

LIGO-G Z LSC Meeting 16 Mar S3 V2 calibration See »calibration homepage » Problems with S3 L1 sensing motivated by i) comparison with X. Siemens’ comparison with time domain calibration, and ii) systematics observed in inspiral analysis, relative to Sensemon online Two problems with V1.1 S3 cal »Reference functions (L1) (DC gain in sensing, due to the DC gain in the filter and the DC gain in the actuation) »XML versions of cal files (H1, H2) New alphas and betas for LHO (took the opportunity of issuing a new calibration to add non-science mode times (injections) Autocal comparison » » »

LIGO-G Z LSC Meeting 16 Mar V2 L1 response function comparison

LIGO-G Z LSC Meeting 16 Mar Validation CVS archiving: S3 V2 and subsequent calibration versions will be archived »Tag versions for science and engineering runs of: models, data, reference functions and parameter files. Head versions for commissioning use. »Investigating CVS archive at LHO or CIT (space constraints, user accounts) Better internal review strategy Standardize structure of calibration info in txt files produced at sites Request a dedicated Calibration Review Committee

LIGO-G Z LSC Meeting 16 Mar Afterthoughts S2 publication on calibration to quote in publications S3 final calibration: final version likely for early July – feedback?