MG13 - Talk detail |
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Participant |
Rocchi, Alessio | |||||||
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Institution |
INFN Roma Tor Vergata - Via della Ricerca Scientifica, 1 - Rome - - Italy | |||||||
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Session |
GW3 |
Accepted |
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Order |
Time |
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Talk |
Oral abstract |
Title |
Correction of wave-front aberrations in Advanced Virgo recycling cavities | |||||
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Abstract |
Wave-front aberrations in the recycling cavities of Advanced interferometric gravitational waves detectors can represent a strong limitation to their operation and sensitivity. These aberrations are due to intrinsic defects in the recycling cavity optics (surface figure errors and refraction index inhomogeneity) and to the rise of thermal effects. All these imperfections can be compensated for by generating proper optical path length distortions in the compensation plates by means of CO2 laser beams. Here we describe the compensating system designed to be installed in Advanced Virgo, presenting both results of measurements and of finite element simulations. |
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