Control strategy to limit duty cycle impact of earthquakes on the LIGO 
gravitational-wave detectors

Biscans, S.; Warner, J.; Mittleman, R.; Buchanan, C.; Coughlin, M.; Evans, M.; Gabbard, H.; Harms, J.; Lantz, B.; Mukund, N.; Pele, A.; Pezerat, C.; Picart, P.; Radkins, H.; Shaffer, T.

doi:10.1088/1361-6382/aaa4aa

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Control strategy to limit duty cycle impact of earthquakes on the LIGO gravitational-wave detectors

MPS-Authors

Gabbard, H.
AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Citation

Biscans, S., Warner, J., Mittleman, R., Buchanan, C., Coughlin, M., Evans, M., et al. (2018). Control strategy to limit duty cycle impact of earthquakes on the LIGO gravitational-wave detectors. Classical and Quantum Gravity, 35(5): 055004. doi:10.1088/1361-6382/aaa4aa.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-DBC0-2

Abstract

Advanced gravitational-wave detectors such as the Laser Interferometer Gravitational-Wave Observatories (LIGO) require an unprecedented level of isolation from the ground. When in operation, they are expected to observe changes in the space-time continuum of less than one thousandth of the diameter of a proton. Strong teleseismic events like earthquakes disrupt the proper functioning of the detectors, and result in a loss of data until the detectors can be returned to their operating states. An earthquake early-warning system, as well as a prediction model have been developed to help understand the impact of earthquakes on LIGO. This paper describes a control strategy to use this early-warning system to reduce the LIGO downtime by 30%. It also presents a plan to implement this new earthquake configuration in the LIGO automation system.