High-power laser system for Advanced Virgo gravitational wave detector : coherently combined master oscillator fiber power amplifiers

Lock acquisition of the recombined ITF: when the Fabry-Perot cavities are locked and the dark fringe power goes down a given threshold, usually half of the maximum power, the trigger

The full Automatic Alignment system has been implemented since the C7 commissioning run, September 2005 2 , we are controlling all the mirror angular degrees of freedom with

Finally, section VI deals with the main software tools developed for the online detector monitoring which is a mandatory complement of data

Consequently, ions with different mobilities form different actual starting voltages and finally the laser irradiâtes different optical output energy.. By changing the N2

The VIRGO interferometer is basically a Michelson interferometer (MITF), with two 3 km long, perpendicular arms. The large length of 3 km is chosen mainly to decrease

1925. Red Shift in the Spectrum of 40 Eridani B. Detection and Generation of Gravitational Waves. Thorne, et al. LIGO: The Laser Interferometer Gravitational-Wave Observatory.

In brief, an external perturbation is again added inside one of the loops (to the error signal in the Virgo configuration) and the transfer function from after the perturbation point

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