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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Rep. Prog. Phys. 72 (2009) 076901arXiv:0711.3041
“FSR” (free spectral range) 37.5 kHz
Class. Quantum Grav. 25 (2008) 184017
Nucl. Instrum. Meth. A624 (2010) 223arXiv:1007.3973
~10 times better, lower frequencies in band
Installation in progress
Simple pendulums become monolithic, quadruple pendulumswith better quality optics
Prototypes being tested,
optics are polished
Lasers become more powerful: 10W 200 W
Installed and being tested at LIGO Livingston.
Seismic isolation goes from passive to active
HAM SEI tested in S6
Most chambers have now their “SEI” installed.
Image Courtesy of Michael Kramer