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Running at design sensitivity: The fifth LIGO Science Run

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.

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Running at design sensitivity: The fifth LIGO Science Run

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  1. Running at design sensitivity: The fifth LIGO Science Run Brian O’Reilly LIGO Livingston Observatory

  2. The LIGO ObservatoriesInterferometers are aligned along the great circle connecting the sites LIGO Hanford Observatory (LHO) H1 : 4 km arms H2 : 2 km arms • Adapted from “The Blue Marble: Land Surface, Ocean Color and Sea Ice” at visibleearth.nasa.gov • NASA Goddard Space Flight Center Image by Reto Stöckli (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). MIT 10 ms LIGO Livingston Observatory (LLO) L1 : 4 km arms Caltech G060645-00-D

  3. TAMA GEO600 LIGO VIRGO AIGO GW Interferometers • Worldwide Network: • Coincidence greatly increases confidence in detection. • Localization of a source by triangulation. G060645-00-D

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  6. Sensitivity G060645-00-D

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  8. S5 to 12/13/06 Run S2 S3 S4 Livingston 4km 61% 37% 22% 75% Hanford 4km 74% 69% 81% 73% Hanford 2km 58% 63% 81% 77% Triple 22% 16% 57% 47% Duty Factor Comparison G060645-00-D

  9. S5 Livingston 4km Uptime G060645-00-D

  10. S5 Hanford 4km Uptime G060645-00-D

  11. Enhanced LIGO for S6 4Q ‘06 4Q ‘07 4Q ‘08 4Q ‘09 4Q ‘10 4Q ‘05 Adv LIGO S6 S5 ~2 years 3.5 yrs Other interferometers in operation (GEO and/or Virgo) Motivation: Lower Thermal Noise Estimate Factor of ~2 in noise improvement above 100 Hz Factor ~6.5 in Inspiral binary neutron star event rate Increased Power + Enhanced Readout Debug new Advanced LIGO technology in actual low noise interferometers Reduce the Advanced LIGO commissioning time G060645-00-D

  12. Advanced LIGO A factor of 10 in sensitivity, thus a factor of 1000 in rate …a year of observation with initial LIGO is equivalent to just several hours of observation with Advanced LIGO G060645-00-D

  13. LIGO at Design G060645-00-D

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