Control strategy to limit duty cycle impact of earthquakes on the LIGO gravitational-wave detectors
Author(s)Biscans, Sebastien; Warner, J; Mittleman, Richard K; Buchanan, C; Coughlin, M; Evans, M.; Gabbard, H; Harms, J; Lantz, B; Mukund, N; Pele, A; Pezerat, C; Picart, P; Radkins, H; Shaffer, T; ... Show more Show less
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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 measure motion of less than 10-19 m. Strong teleseismic events like earthquakes disrupt the proper functioning of the detectors, and result in a loss of data. An earthquake early-warning system, as well as a prediction model, have been developed to 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.
DepartmentLIGO (Observatory : Massachusetts Institute of Technology)
Classical and Quantum Gravity
Biscans, S, J Warner, R Mittleman, C Buchanan, M Coughlin, M Evans, H Gabbard, et al. “Control Strategy to Limit Duty Cycle Impact of Earthquakes on the LIGO Gravitational-Wave Detectors.” Classical and Quantum Gravity 35, 5 (January 2018): 055004 © 2018 IOP Publishing
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