Accurate calibration of test mass displacement in the LIGO interferometers

Details Accurate calibration of test mass displacement in the LIGO interferometers Accurate calibration of test mass displacement in the LIGO interferometers

2009-11-04

arxiv.org/abs/0911.0853v1

Class.Quant.Grav.27:084024,2010

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages, 6 figures, submitted on 31 October 2009 to Classical and Quantum Gravity for the proceedings of 8th Edoardo Amaldi C

Scientific paper

10.1088/0264-9381/27/8/084024

We describe three fundamentally different methods we have applied to calibrate the test mass displacement actuators to search for systematic errors in the calibration of the LIGO gravitational-wave detectors. The actuation frequencies tested range from 90 Hz to 1 kHz and the actuation amplitudes range from 1e-6 m to 1e-18 m. For each of the four test mass actuators measured, the weighted mean coefficient over all frequencies for each technique deviates from the average actuation coefficient for all three techniques by less than 4%. This result indicates that systematic errors in the calibration of the responses of the LIGO detectors to differential length variations are within the stated uncertainties.

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