LIGO Document P080027-x0

Experimental investigation of a control scheme for a zero-detuning resonant sideband extraction interferometer for next-generation gravitational-wave detectors

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P - Publications
Some next-generation gravitational-wave detectors, such as the American Advanced LIGO project and the Japanese LCGT project, plan to use power recycled resonant sideband extraction (RSE) interferometers for their interferometer's optical configuration. A power recycled zero-detuning (PRZD) RSE interferometer, which is the default design for LCGT, has five main length degrees of freedom that need to be controlled in order to operate a gravitational-wave detector. This task is expected to be very challenging because of the complexity of optical configuration. A new control scheme for a PRZD RSE interferometer has been developed and tested with a prototype interferometer. The PRZD RSE interferometer was successfully locked with the control scheme. It is the first experimental demonstration of a PRZD RSE interferometer with suspended test masses. The result serves as an important step for the operation of LCGT.
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Rev P080027-00-Z:
- Full document number: LIGO-P080027-00-Z
- Author(s): Fumiko Kawazoe; Akio Sugamoto
- Document date: 2008-03-19
- Document received date: 2008-03-19
- Document entry date: 2008-03-19
Journal References:
Published in Class Quant Grav vol. 25 pg. 195008 (12pp).

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