Feasibility of a magnetic suspension for second generation Gravitational Wave interferometers
نویسندگان
چکیده
This paper deals with the use of a magnetic levitation system as a part of a multi-stage seismic attenuator for gravitational wave interferometric antennas. The proposed configuration uses permanent magnets in attraction to balance the suspended weight, plus a closed loop position control to obtain a stable levitation. The system is analyzed using a MATLAB simulation code to compute the forces exerted by extended magnets. The validity of this model has been tested by a comparison with the experimental data from a levitated suspension prototype.
منابع مشابه
Correlated magnetic noise in global networks of gravitational-wave interferometers: observations and implications
One of the most ambitious goals of gravitational-wave astronomy is to observe the stochastic gravitational-wave background. Correlated noise in two or more detectors can introduce a systematic error, which limits the sensitivity of stochastic searches. We report on measurements of correlated magnetic noise from Schumann resonances at the widely separated LIGO and Virgo detectors. We investigate...
متن کاملGeneration of high-purity higher-order Laguerre-Gauss beams at high laser power.
We have investigated the generation of highly pure higher-order Laguerre-Gauss (LG) beams at high laser power of order 100 W, the same regime that will be used by second-generation gravitational wave interferometers such as Advanced LIGO. We report on the generation of a helical-type LG33 mode with a purity of order 97% at a power of 83 W, the highest power ever reported in literature for a hig...
متن کاملLIGO-P020016-00-R Second generation instruments for the Laser Interferometer Gravitational Wave Observatory (LIGO)
The interferometers being planned for second generation LIGO promise an order of magnitude increase in broadband strain sensitivity–with the corresponding cubic increase in detection volume–and an extension of the observation band to lower frequencies. In addition, one of the interferometers may be designed for narrowband performance, giving further improved sensitivity over roughly an octave b...
متن کاملQND measurements for future gravitational-wave detectors
Second-generation interferometric gravitational-wave detectors will be operating at the Standard Quantum Limit, a sensitivity limitation set by the trade off between measurement accuracy and quantum back action, which is governed by the Heisenberg Uncertainty Principle. We review several schemes that allows the quantum noise of interferometers to surpass the Standard Quantum Limit significantly...
متن کاملTriple Michelson Interferometer for a Third-Generation Gravitational Wave Detector
The upcoming European design study ‘Einstein gravitational wave Telescope’ represents the first step towards a substantial, international effort for the design of a third-generation interferometric gravitational wave detector. It is generally believed that third generation instruments cannot be installed into existing infrastructures but will require a new search for optimal detector sites. Con...
متن کامل