Running at design sensitivity: The fifth LIGO Science Run

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Running at design sensitivity: The fifth LIGO Science Run. Brian O’Reilly LIGO Livingston Observatory. The LIGO Observatories Interferometers are aligned along the great circle connecting the sites. LIGO Hanford Observatory (LHO) H1 : 4 km arms H2 : 2 km arms. - PowerPoint PPT Presentation

Transcript of Running at design sensitivity: The fifth LIGO Science Run

  • Running at design sensitivity: The fifth LIGO Science Run Brian OReillyLIGO Livingston Observatory

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  • The LIGO Observatories Interferometers are aligned along the great circle connecting the sitesAdapted from The Blue Marble: Land Surface, Ocean Color and Sea Ice at visibleearth.nasa.govNASA Goddard Space Flight Center Image by Reto Stckli (land surface, shallow water, clouds). Enhancements by Robert Simmon (ocean color, compositing, 3D globes, animation). Data and technical support: MODIS Land Group; MODIS Science Data Support Team; MODIS Atmosphere Group; MODIS Ocean Group Additional data: USGS EROS Data Center (topography); USGS Terrestrial Remote Sensing Flagstaff Field Center (Antarctica); Defense Meteorological Satellite Program (city lights).LIGO Hanford Observatory (LHO) H1 : 4 km arms H2 : 2 km armsLIGO Livingston Observatory (LLO) L1 : 4 km arms10 msCaltechMIT

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  • GW InterferometersWorldwide Network:Coincidence greatly increases confidence in detection.Localization of a source by triangulation.

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  • Sensitivity

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  • Duty Factor Comparison

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  • S5 Livingston 4km Uptime

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  • S5 Hanford 4km Uptime

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  • S5S64Q054Q064Q074Q084Q104Q09AdvLIGO~2 yearsOther interferometers in operation (GEO and/or Virgo)3.5 yrsEnhanced LIGO for S6Lower Thermal Noise EstimateIncreased Power + Enhanced ReadoutMotivation:Factor of ~2 in noise improvement above 100 HzFactor ~6.5 in Inspiral binary neutron star event rateDebug new Advanced LIGO technology in actual low noise interferometersReduce the Advanced LIGO commissioning time

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  • Advanced LIGOA factor of 10 in sensitivity, thus a factor of 1000 in ratea year of observation with initial LIGO is equivalent to just several hours of observation with Advanced LIGO

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  • LIGO at Design

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    BASELINE upgrades:30 W LaserLaser-Zentrum Hanover (LZH) AdLIGO technologyDC ReadoutIn-vacuum implementationOutput Mode Cleaner (OMC)AdvLIGO HAM stackHigh Power Input Optics (Modulators / Isolators)Thermal CompensationMiscellaneous