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Improving the robustness of the advanced LIGO detectors to earthquakes

Research output: Contribution to journalArticlepeer-review

  • E. Schwartz
  • A. Pele
  • J. Warner
  • B. Lantz
  • J. Betzwieser
  • K. L. Dooley
  • S. Biscans
  • M. Coughlin
  • N. Mukund
  • R. Abbott
  • C. Adams
  • R. X. Adhikari
  • A. Ananyeva
  • S. Appert
  • K. Arai
  • J. S. Areeda
  • Y. Asali
  • S. M. Aston
  • C. Austin
  • A. M. Baer
  • M. Ball
  • S. W. Ballmer
  • S. Banagiri
  • D. Barker
  • L. Barsotti
  • J. Bartlett
  • B. K. Berger
  • D. Bhattacharjee
  • G. Billingsley
  • C. D. Blair
  • R. M. Blair
  • N. Bode
  • P. Booker
  • R. Bork
  • A. Bramley
  • A. F. Brooks
  • D. D. Brown
  • A. Buikema
  • C. Cahillane
  • K. C. Cannon
  • X. Chen
  • A. A. Ciobanu
  • F. Clara
  • S. J. Cooper
  • K. R. Corley
  • S. T. Countryman
  • P. B. Covas
  • D. C. Coyne
  • L. E.H. Datrier
  • D. Davis
  • C. Di Fronzo
  • J. C. Driggers
  • P. Dupej
  • S. E. Dwyer
  • A. Effler
  • T. Etzel
  • M. Evans
  • T. M. Evans
  • J. Feicht
  • A. Fernandez-Galiana
  • P. Fritschel
  • V. V. Frolov
  • P. Fulda
  • M. Fyffe
  • J. A. Giaime
  • K. D. Giardina
  • P. Godwin
  • E. Goetz
  • S. Gras
  • C. Gray
  • R. Gray
  • A. C. Green
  • Anchal Gupta
  • E. K. Gustafson
  • R. Gustafson
  • J. Hanks
  • J. Hanson
  • T. Hardwick
  • R. K. Hasskew
  • M. C. Heintze
  • A. F. Helmling-Cornell
  • N. A. Holland
  • J. D. Jones
  • S. Kandhasamy
  • S. Karki
  • M. Kasprzack
  • K. Kawabe
  • N. Kijbunchoo
  • P. J. King
  • J. S. Kissel
  • Rahul Kumar
  • M. Landry
  • B. B. Lane
  • M. Laxen
  • Y. K. Lecoeuche
  • J. Leviton
  • J. Liu
  • M. Lormand
  • M. MacInnis
  • D. M. MacLeod
  • G. L. Mansell
  • S. Márka
  • Z. Márka
  • D. V. Martynov
  • K. Mason
  • T. J. Massinger
  • F. Matichard
  • N. Mavalvala
  • R. McCarthy
  • D. E. McClelland
  • S. McCormick
  • L. McCuller
  • J. McIver
  • T. McRae
  • G. Mendell
  • K. Merfeld
  • E. L. Merilh
  • F. Meylahn
  • T. Mistry
  • R. Mittleman
  • G. Moreno
  • C. M. Mow-Lowry
  • A. Mullavey
  • T. J.N. Nelson
  • P. Nguyen
  • J. Oberling
  • Richard J. Oram
  • C. Osthelder
  • D. J. Ottaway
  • H. Overmier
  • J. R. Palamos
  • W. Parker
  • E. Payne
  • C. J. Perez
  • M. Pirello
  • H. Radkins
  • K. E. Ramirez
  • J. W. Richardson
  • K. Riles
  • N. A. Robertson
  • J. G. Rollins
  • C. L. Romel
  • J. H. Romie
  • M. P. Ross
  • K. Ryan
  • T. Sadecki
  • E. J. Sanchez
  • L. E. Sanchez
  • T. R. Saravanan
  • R. L. Savage
  • D. Schaetzl
  • R. Schnabel
  • R. M.S. Schofield
  • D. Sellers
  • T. Shaffer
  • D. Sigg
  • B. J.J. Slagmolen
  • J. R. Smith
  • S. Soni
  • B. Sorazu
  • A. P. Spencer
  • K. A. Strain
  • L. Sun
  • M. J. Szczepańczyk
  • M. Thomas
  • P. Thomas
  • K. A. Thorne
  • K. Toland
  • C. I. Torrie
  • G. Traylor
  • M. Tse
  • A. L. Urban
  • G. Vajente
  • G. Valdes
  • D. C. Vander-Hyde
  • P. J. Veitch
  • K. Venkateswara
  • G. Venugopalan
  • A. D. Viets
  • T. Vo
  • C. Vorvick
  • M. Wade
  • R. L. Ward
  • B. Weaver
  • R. Weiss
  • C. Whittle
  • B. Willke
  • C. C. Wipf
  • L. Xiao
  • H. Yamamoto
  • H. Yu
  • L. Zhang
  • M. E. Zucker
  • J. Zweizig

Teleseismic, or distant, earthquakes regularly disrupt the operation of ground-based gravitational wave detectors such as Advanced LIGO. Here, we present EQ mode, a new global control scheme, consisting of an automated sequence of optimized control filters that reduces and coordinates the motion of the seismic isolation platforms during earthquakes. This, in turn, suppresses the differential motion of the interferometer arms with respect to one another, resulting in a reduction of DARM signal at frequencies below 100 mHz. Our method greatly improved the interferometers' capability to remain operational during earthquakes, with ground velocities up to 3.9 μm s-1 rms in the beam direction, setting a new record for both detectors. This sets a milestone in seismic controls of the Advanced LIGO detectors' ability to manage high ground motion induced by earthquakes, opening a path for further robust operation in other extreme environmental conditions.

Original languageEnglish
Article number235007
Number of pages19
JournalClassical and Quantum Gravity
Volume37
Issue number23
DOIs
Publication statusPublished - 5 Nov 2020

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  • Schwartz_et_al_2020_AAM

    Rights statement: This Accepted Manuscript is available for reuse under a CC BY-NC-ND 3.0 licence after the 12 month embargo period provided that all the terms of the licence are adhered to.

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    Due to publisher’s copyright restrictions, this document is not freely available to download from this website until: 5/11/21

    Licence: CC BY-NC-ND

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