Improving the robustness of the advanced LIGO detectors to earthquakes

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

doi:10.1088/1361-6382/abbc8c

Published December 2020 | Version Published + Submitted

Journal Article Open

Improving the robustness of the advanced LIGO detectors to earthquakes

1. Laser Interferometer Gravitational Wave Observatory
2. University of Mississippi
3. Stanford University
4. Cardiff University
5. Massachusetts Institute of Technology
6. University of Minnesota
7. Max Planck Institute for Gravitational Physics
8. California State University, Fullerton
9. Columbia University
10. Louisiana State University
11. Christopher Newport University
12. University of Oregon
13. Syracuse University
14. Missouri University of Science and Technology
15. Leibniz University Hannover
16. University of Tokyo
17. University of Western Australia
18. University of Birmingham
19. University of the Balearic Islands
20. University of Glasgow
21. University of Florida
22. Pennsylvania State University
23. University of Michigan–Ann Arbor
24. Australian National University
25. Inter-University Centre for Astronomy and Astrophysics
26. University of Portsmouth
27. University of Sheffield
28. Southern University and Agricultural and Mechanical College
29. Monash University
30. The University of Texas Rio Grande Valley
31. University of Washington
32. Universität Hamburg
33. Concordia University Wisconsin
34. Kenyon College

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.

Additional Information

© 2020 IOP Publishing Ltd. Received 30 July 2020; Revised 11 September 2020; Accepted 29 September 2020; Published 5 November 2020. The authors thank the LIGO Scientific Collaboration for access to the data and gratefully acknowledge the support of the United States National Science Foundation (NSF) for the construction and operation of the LIGO Laboratory and Advanced LIGO as well as the Science and Technology Facilities Council (STFC) of the United Kingdom, and the Max Planck Society (MPS) for support of the construction of Advanced LIGO. Additional support for Advanced LIGO was provided by the Australian Research Council. This project was supported by NSF Grants: PHY-1708006 and PHY-1608922. ES acknowledge the LSC FELLOWS program for supporting his research at LIGO Livingston Observatory. LIGO was constructed by the California Institute of Technology and Massachusetts Institute of Technology with funding from the National Science Foundation and operates under cooperative agreement PHY-1764464 . This paper carries LIGO Document Number LIGO-P2000072.

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Eprint ID: 106596
Resolver ID: CaltechAUTHORS:20201110-144418660

Describes: https://arxiv.org/abs/2007.12847 (URL)

Science and Technology Facilities Council (STFC)
Max Planck Society
Australian Research Council
NSF
PHY-1708006
NSF
PHY-1608922
LIGO Laboratory
NSF
PHY-1764464

Created: 2020-11-11

Created from EPrint's datestamp field
Updated: 2022-11-01

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Caltech groups: LIGO , Physics Department
Other Numbering System Name: LIGO Document
Other Numbering System Identifier: P2000072

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Improving the robustness of the advanced LIGO detectors to earthquakes

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