Running at design sensitivity: The fifth LIGO Science Run
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Running at design Running at design sensitivity: The fifth sensitivity: The fifth LIGO Science Run LIGO Science Run Brian O’Reilly LIGO Livingston Observatory
description
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: Running at design sensitivity: The fifth LIGO Science RunThe fifth LIGO Science RunRunning at design sensitivity: Running at design sensitivity: The fifth LIGO Science RunThe fifth LIGO Science Run
Brian O’Reilly
LIGO Livingston Observatory
Brian O’Reilly
LIGO Livingston Observatory
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The LIGO Observatories Interferometers are aligned along
the great circle connecting the sites
The LIGO Observatories Interferometers are aligned along
the great circle connecting the sites
Adapted from “The Blue Marble: Land Surface, Ocean Color and Sea Ice” at visibleearth.nasa.govNASA 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).
Adapted from “The Blue Marble: Land Surface, Ocean Color and Sea Ice” at visibleearth.nasa.govNASA 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).
LIGO Hanford Observatory (LHO)H1 : 4 km armsH2 : 2 km arms
LIGO Livingston Observatory (LLO)L1 : 4 km arms
10 ms
Caltech
MIT
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GW InterferometersGW InterferometersGW InterferometersGW Interferometers
Worldwide Network: Coincidence greatly increases confidence in detection. Localization of a source by triangulation.
Worldwide Network: Coincidence greatly increases confidence in detection. Localization of a source by triangulation.
LIGO
GEO600
VIRGO
TAMA
AIGO
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SensitivitySensitivity
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81%63%58%Hanford 2km
57%
81%
75%
S4
16%
69%
22%
S3
22%
74%
37%
S2Run
Triple
Hanford 4km
77%
S5 to 12/13/06
47%
73%
61%Livingston 4km
Duty Factor Comparison
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S5 Livingston 4km UptimeS5 Livingston 4km Uptime
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S5 Hanford 4km UptimeS5 Hanford 4km Uptime
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S5 S6
4Q‘05
4Q‘06
4Q‘07
4Q‘08
4Q‘10
4Q‘09
Adv
LIGO~2 years
Other interferometers in operation (GEO and/or Virgo)3.5 yrs
Enhanced LIGO for S6
Lower Thermal Noise Estimate Increased
Power + Enhanced Readout
Motivation:
Factor of ~2 in noise improvement above 100 HzFactor ~6.5 in Inspiral binary neutron star event rate
Debug new Advanced LIGO technology in actual low noise interferometersReduce the Advanced LIGO commissioning time
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Advanced LIGOAdvanced LIGOA 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
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
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LIGO at DesignLIGO at Design
