dorsal/arxiv
View SchemaReadout and Control of a Power-recycled Interferometric Gravitational-wave Antenna
| Authors | D. Sigg, H. Rong, P. Fritschel, M. Zucker, R. Bork, N. Mavalvala, D. Ouimette, G. Gonzalez |
|---|---|
| Categories | |
| ArXiv ID | physics/0111047 |
| URL | https://arxiv.org/abs/physics/0111047 |
| Journal | eConf C011127 (2001) WEcT003 |
Abstract
Interferometric gravitational wave antennas are based on Michelson interferometers whose sensitivity to small differential length changes has been enhanced by adding multiple coupled optical resonators. The use of optical cavities is essential for reaching the required sensitivity, but sets challenges for the control system which must maintain the cavities near resonance. The goal for the strain sensitivity of the Laser Interferometer Gravitational-wave Observatory (LIGO) is 10^-21 rms, integrated over a 100 Hz bandwidth centered at 150 Hz. We present the major design features of the LIGO length and frequency sensing and control system which will hold the differential length to within 5 10^-14 m of the operating point. We also highlight the restrictions imposed by couplings of noise into the gravitational wave readout signal and the required immunity against them.
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"abstract": "Interferometric gravitational wave antennas are based on Michelson\ninterferometers whose sensitivity to small differential length changes has been\nenhanced by adding multiple coupled optical resonators. The use of optical\ncavities is essential for reaching the required sensitivity, but sets\nchallenges for the control system which must maintain the cavities near\nresonance. The goal for the strain sensitivity of the Laser Interferometer\nGravitational-wave Observatory (LIGO) is 10^-21 rms, integrated over a 100 Hz\nbandwidth centered at 150 Hz. We present the major design features of the LIGO\nlength and frequency sensing and control system which will hold the\ndifferential length to within 5 10^-14 m of the operating point. We also\nhighlight the restrictions imposed by couplings of noise into the gravitational\nwave readout signal and the required immunity against them.",
"arxiv_id": "physics/0111047",
"authors": [
"D. Sigg",
"H. Rong",
"P. Fritschel",
"M. Zucker",
"R. Bork",
"N. Mavalvala",
"D. Ouimette",
"G. Gonzalez"
],
"categories": [
"physics.ins-det"
],
"journal_ref": "eConf C011127 (2001) WEcT003",
"title": "Readout and Control of a Power-recycled Interferometric Gravitational-wave Antenna",
"url": "https://arxiv.org/abs/physics/0111047"
},
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