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GW Detectors noise and sensitivity. LIGO detectors. Rep. Prog. Phys. 72 (2009) 076901 arXiv:0711.3041. Sensitivity progress. Rep. Prog. Phys. 72 (2009) 076901 arXiv:0711.3041. “Antenna pattern”. “peanut”. LIGO high frequency sensitivity. “FSR” (free spectral range) 37.5 kHz .

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ligo detectors
LIGO detectors

Rep. Prog. Phys. 72 (2009) 076901arXiv:0711.3041

ligo high frequency sensitivity
LIGO high frequency sensitivity

“FSR” (free spectral range) 37.5 kHz

Class. Quantum Grav. 25 (2008) 184017

ligo calibration
LIGO calibration

Nucl. Instrum. Meth. A624 (2010) 223arXiv:1007.3973

advanced ligo advanced virgo
Advanced LIGO/ Advanced Virgo

~10 times better, lower frequencies in band

Installation in progress

initial vs advanced ligo
Initial vs Advanced LIGO

Simple pendulums become monolithic, quadruple pendulumswith better quality optics

Prototypes being tested,

optics are polished

initial vs advanced ligo1
Initial vs Advanced LIGO

Lasers become more powerful: 10W  200 W

Installed and being tested at LIGO Livingston.

initial vs advanced ligo2
Initial vs Advanced LIGO

Seismic isolation goes from passive to active

HAM SEI tested in S6

Most chambers have now their “SEI” installed.

slide19

The Advanced GW Detector Network~2020

Advanced LIGO

Hanford

GEO600

Advanced

Virgo

KAGRA

Advanced LIGO

Livingston

LIGO-India?

19

pulsar timing arrays
Pulsar timing arrays

Image Courtesy of Michael Kramer

Nanograv residuals

online generators
Online generators

http://www.srl.caltech.edu/~shane/sensitivity/MakeCurve.html

http://www.gwoptics.org/processing/space_time_quest/

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