Improving the robustness of the advanced LIGO detectors to earthquakes

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; A. 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; R. Kumar; M. Landry; B.B. Lane; M. Laxen; Y.K. Lecoeuche; J. Leviton; J. Liu; M. Lormand; A.P. Lundgren; R. MacAs; 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; S. Mozzon; A. Mullavey; T.J.N. Nelson; P. Nguyen; L.K. Nuttall; J. Oberling; R.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

doi:10.1088/1361-6382/abbc8c

Improving the robustness of the advanced LIGO detectors to earthquakes

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, A. 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, R. Kumar, M. Landry, B.B. Lane, M. Laxen, Y.K. Lecoeuche, J. Leviton, J. Liu, M. Lormand, A.P. Lundgren, R. MacAs, 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, S. Mozzon, A. Mullavey, T.J.N. Nelson, P. Nguyen, L.K. Nuttall, J. Oberling, R.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

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

© 2020 IOP Publishing Ltd.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 language	English
Article number	235007
Journal	Classical and Quantum Gravity
Volume	37
Issue number	23
DOIs	https://doi.org/10.1088/1361-6382/abbc8c
Publication status	Published - 1 Dec 2020
Externally published	Yes

Funding

Funders	Funder number
Science and Technology Facilities Council	ST/S000550/1
National Science Foundation	1708006, 1764464

Access to Document

10.1088/1361-6382/abbc8c

Persistent URL (handle)

Persistent link

Cite this

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., ... Zweizig, J. (2020). Improving the robustness of the advanced LIGO detectors to earthquakes. Classical and Quantum Gravity, 37(23), Article 235007. https://doi.org/10.1088/1361-6382/abbc8c

@article{ff8d3e7ab7ff4c848742042bdaaf1d94,

title = "Improving the robustness of the advanced LIGO detectors to earthquakes",

abstract = "{\textcopyright} 2020 IOP Publishing Ltd.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.",

author = "E. Schwartz and A. Pele and J. Warner and B. Lantz and J. Betzwieser and K.L. Dooley and S. Biscans and M. Coughlin and N. Mukund and R. Abbott and C. Adams and R.X. Adhikari and A. Ananyeva and S. Appert and K. Arai and J.S. Areeda and Y. Asali and S.M. Aston and C. Austin and A.M. Baer and M. Ball and S.W. Ballmer and S. Banagiri and D. Barker and L. Barsotti and J. Bartlett and B.K. Berger and D. Bhattacharjee and G. Billingsley and C.D. Blair and R.M. Blair and N. Bode and P. Booker and R. Bork and A. Bramley and A.F. Brooks and D.D. Brown and A. Buikema and C. Cahillane and K.C. Cannon and X. Chen and A.A. Ciobanu and F. Clara and S.J. Cooper and K.R. Corley and S.T. Countryman and P.B. Covas and D.C. Coyne and L.E.H. Datrier and D. Davis and \{Di Fronzo\}, C. and J.C. Driggers and P. Dupej and S.E. Dwyer and A. Effler and T. Etzel and M. Evans and T.M. Evans and J. Feicht and A. Fernandez-Galiana and P. Fritschel and V.V. Frolov and P. Fulda and M. Fyffe and J.A. Giaime and K.D. Giardina and P. Godwin and E. Goetz and S. Gras and C. Gray and R. Gray and A.C. Green and A. Gupta and E.K. Gustafson and R. Gustafson and J. Hanks and J. Hanson and T. Hardwick and R.K. Hasskew and M.C. Heintze and A.F. Helmling-Cornell and N.A. Holland and J.D. Jones and S. Kandhasamy and S. Karki and M. Kasprzack and K. Kawabe and N. Kijbunchoo and P.J. King and J.S. Kissel and R. Kumar and M. Landry and B.B. Lane and M. Laxen and Y.K. Lecoeuche and J. Leviton and J. Liu and M. Lormand and A.P. Lundgren and R. MacAs and M. MacInnis and D.M. MacLeod and G.L. Mansell and S. M{\'a}rka and Z. M{\'a}rka and D.V. Martynov and K. Mason and T.J. Massinger and F. Matichard and N. Mavalvala and R. McCarthy and D.E. McClelland and S. McCormick and L. McCuller and J. McIver and T. McRae and G. Mendell and K. Merfeld and E.L. Merilh and F. Meylahn and T. Mistry and R. Mittleman and G. Moreno and C.M. Mow-Lowry and S. Mozzon and A. Mullavey and T.J.N. Nelson and P. Nguyen and L.K. Nuttall and J. Oberling and R.J. Oram and C. Osthelder and D.J. Ottaway and H. Overmier and J.R. Palamos and W. Parker and E. Payne and C.J. Perez and M. Pirello and H. Radkins and K.E. Ramirez and J.W. Richardson and K. Riles and N.A. Robertson and J.G. Rollins and C.L. Romel and J.H. Romie and M.P. Ross and K. Ryan and T. Sadecki and E.J. Sanchez and L.E. Sanchez and T.R. Saravanan and R.L. Savage and D. Schaetzl and R. Schnabel and R.M.S. Schofield and D. Sellers and T. Shaffer and D. Sigg and B.J.J. Slagmolen and J.R. Smith and S. Soni and B. Sorazu and A.P. Spencer and K.A. Strain and L. Sun and M.J. Szczepa{\'n}czyk and M. Thomas and P. Thomas and K.A. Thorne and K. Toland and C.I. Torrie and G. Traylor and M. Tse and A.L. Urban and G. Vajente and G. Valdes and D.C. Vander-Hyde and P.J. Veitch and K. Venkateswara and G. Venugopalan and A.D. Viets and T. Vo and C. Vorvick and M. Wade and R.L. Ward and B. Weaver and R. Weiss and C. Whittle and B. Willke and C.C. Wipf and L. Xiao and H. Yamamoto and H. Yu and L. Zhang and M.E. Zucker and J. Zweizig",

year = "2020",

month = dec,

day = "1",

doi = "10.1088/1361-6382/abbc8c",

language = "English",

volume = "37",

journal = "Classical and Quantum Gravity",

issn = "0264-9381",

publisher = "IOP Publishing Ltd.",

number = "23",

}

Schwartz, E, Pele, A, Warner, J, Lantz, B, Betzwieser, J, Dooley, KL, Biscans, S, Coughlin, M, Mukund, N, Abbott, R, Adams, C, Adhikari, RX, Ananyeva, A, Appert, S, Arai, K, Areeda, JS, Asali, Y, Aston, SM, Austin, C, Baer, AM, Ball, M, Ballmer, SW, Banagiri, S, Barker, D, Barsotti, L, Bartlett, J, Berger, BK, Bhattacharjee, D, Billingsley, G, Blair, CD, Blair, RM, Bode, N, Booker, P, Bork, R, Bramley, A, Brooks, AF, Brown, DD, Buikema, A, Cahillane, C, Cannon, KC, Chen, X, Ciobanu, AA, Clara, F, Cooper, SJ, Corley, KR, Countryman, ST, Covas, PB, Coyne, DC, Datrier, LEH, Davis, D, Di Fronzo, C, Driggers, JC, Dupej, P, Dwyer, SE, Effler, A, Etzel, T, Evans, M, Evans, TM, Feicht, J, Fernandez-Galiana, A, Fritschel, P, Frolov, VV, Fulda, P, Fyffe, M, Giaime, JA, Giardina, KD, Godwin, P, Goetz, E, Gras, S, Gray, C, Gray, R, Green, AC, Gupta, A, Gustafson, EK, Gustafson, R, Hanks, J, Hanson, J, Hardwick, T, Hasskew, RK, Heintze, MC, Helmling-Cornell, AF, Holland, NA, Jones, JD, Kandhasamy, S, Karki, S, Kasprzack, M, Kawabe, K, Kijbunchoo, N, King, PJ, Kissel, JS, Kumar, R, Landry, M, Lane, BB, Laxen, M, Lecoeuche, YK, Leviton, J, Liu, J, Lormand, M, Lundgren, AP, MacAs, R, MacInnis, M, MacLeod, DM, Mansell, GL, Márka, S, Márka, Z, Martynov, DV, Mason, K, Massinger, TJ, Matichard, F, Mavalvala, N, McCarthy, R, McClelland, DE, McCormick, S, McCuller, L, McIver, J, McRae, T, Mendell, G, Merfeld, K, Merilh, EL, Meylahn, F, Mistry, T, Mittleman, R, Moreno, G, Mow-Lowry, CM, Mozzon, S, Mullavey, A, Nelson, TJN, Nguyen, P, Nuttall, LK, Oberling, J, Oram, RJ, Osthelder, C, Ottaway, DJ, Overmier, H, Palamos, JR, Parker, W, Payne, E, Perez, CJ, Pirello, M, Radkins, H, Ramirez, KE, Richardson, JW, Riles, K, Robertson, NA, Rollins, JG, Romel, CL, Romie, JH, Ross, MP, Ryan, K, Sadecki, T, Sanchez, EJ, Sanchez, LE, Saravanan, TR, Savage, RL, Schaetzl, D, Schnabel, R, Schofield, RMS, Sellers, D, Shaffer, T, Sigg, D, Slagmolen, BJJ, Smith, JR, Soni, S, Sorazu, B, Spencer, AP, Strain, KA, Sun, L, Szczepańczyk, MJ, Thomas, M, Thomas, P, Thorne, KA, Toland, K, Torrie, CI, Traylor, G, Tse, M, Urban, AL, Vajente, G, Valdes, G, Vander-Hyde, DC, Veitch, PJ, Venkateswara, K, Venugopalan, G, Viets, AD, Vo, T, Vorvick, C, Wade, M, Ward, RL, Weaver, B, Weiss, R, Whittle, C, Willke, B, Wipf, CC, Xiao, L, Yamamoto, H, Yu, H, Zhang, L, Zucker, ME & Zweizig, J 2020, 'Improving the robustness of the advanced LIGO detectors to earthquakes', Classical and Quantum Gravity, vol. 37, no. 23, 235007. https://doi.org/10.1088/1361-6382/abbc8c

TY - JOUR

T1 - Improving the robustness of the advanced LIGO detectors to earthquakes

AU - Schwartz, E.

AU - Pele, A.

AU - Warner, J.

AU - Lantz, B.

AU - Betzwieser, J.

AU - Dooley, K.L.

AU - Biscans, S.

AU - Coughlin, M.

AU - Mukund, N.

AU - Abbott, R.

AU - Adams, C.

AU - Adhikari, R.X.

AU - Ananyeva, A.

AU - Appert, S.

AU - Arai, K.

AU - Areeda, J.S.

AU - Asali, Y.

AU - Aston, S.M.

AU - Austin, C.

AU - Baer, A.M.

AU - Ball, M.

AU - Ballmer, S.W.

AU - Banagiri, S.

AU - Barker, D.

AU - Barsotti, L.

AU - Bartlett, J.

AU - Berger, B.K.

AU - Bhattacharjee, D.

AU - Billingsley, G.

AU - Blair, C.D.

AU - Blair, R.M.

AU - Bode, N.

AU - Booker, P.

AU - Bork, R.

AU - Bramley, A.

AU - Brooks, A.F.

AU - Brown, D.D.

AU - Buikema, A.

AU - Cahillane, C.

AU - Cannon, K.C.

AU - Chen, X.

AU - Ciobanu, A.A.

AU - Clara, F.

AU - Cooper, S.J.

AU - Corley, K.R.

AU - Countryman, S.T.

AU - Covas, P.B.

AU - Coyne, D.C.

AU - Datrier, L.E.H.

AU - Davis, D.

AU - Di Fronzo, C.

AU - Driggers, J.C.

AU - Dupej, P.

AU - Dwyer, S.E.

AU - Effler, A.

AU - Etzel, T.

AU - Evans, M.

AU - Evans, T.M.

AU - Feicht, J.

AU - Fernandez-Galiana, A.

AU - Fritschel, P.

AU - Frolov, V.V.

AU - Fulda, P.

AU - Fyffe, M.

AU - Giaime, J.A.

AU - Giardina, K.D.

AU - Godwin, P.

AU - Goetz, E.

AU - Gras, S.

AU - Gray, C.

AU - Gray, R.

AU - Green, A.C.

AU - Gupta, A.

AU - Gustafson, E.K.

AU - Gustafson, R.

AU - Hanks, J.

AU - Hanson, J.

AU - Hardwick, T.

AU - Hasskew, R.K.

AU - Heintze, M.C.

AU - Helmling-Cornell, A.F.

AU - Holland, N.A.

AU - Jones, J.D.

AU - Kandhasamy, S.

AU - Karki, S.

AU - Kasprzack, M.

AU - Kawabe, K.

AU - Kijbunchoo, N.

AU - King, P.J.

AU - Kissel, J.S.

AU - Kumar, R.

AU - Landry, M.

AU - Lane, B.B.

AU - Laxen, M.

AU - Lecoeuche, Y.K.

AU - Leviton, J.

AU - Liu, J.

AU - Lormand, M.

AU - Lundgren, A.P.

AU - MacAs, R.

AU - MacInnis, M.

AU - MacLeod, D.M.

AU - Mansell, G.L.

AU - Márka, S.

AU - Márka, Z.

AU - Martynov, D.V.

AU - Mason, K.

AU - Massinger, T.J.

AU - Matichard, F.

AU - Mavalvala, N.

AU - McCarthy, R.

AU - McClelland, D.E.

AU - McCormick, S.

AU - McCuller, L.

AU - McIver, J.

AU - McRae, T.

AU - Mendell, G.

AU - Merfeld, K.

AU - Merilh, E.L.

AU - Meylahn, F.

AU - Mistry, T.

AU - Mittleman, R.

AU - Moreno, G.

AU - Mow-Lowry, C.M.

AU - Mozzon, S.

AU - Mullavey, A.

AU - Nelson, T.J.N.

AU - Nguyen, P.

AU - Nuttall, L.K.

AU - Oberling, J.

AU - Oram, R.J.

AU - Osthelder, C.

AU - Ottaway, D.J.

AU - Overmier, H.

AU - Palamos, J.R.

AU - Parker, W.

AU - Payne, E.

AU - Perez, C.J.

AU - Pirello, M.

AU - Radkins, H.

AU - Ramirez, K.E.

AU - Richardson, J.W.

AU - Riles, K.

AU - Robertson, N.A.

AU - Rollins, J.G.

AU - Romel, C.L.

AU - Romie, J.H.

AU - Ross, M.P.

AU - Ryan, K.

AU - Sadecki, T.

AU - Sanchez, E.J.

AU - Sanchez, L.E.

AU - Saravanan, T.R.

AU - Savage, R.L.

AU - Schaetzl, D.

AU - Schnabel, R.

AU - Schofield, R.M.S.

AU - Sellers, D.

AU - Shaffer, T.

AU - Sigg, D.

AU - Slagmolen, B.J.J.

AU - Smith, J.R.

AU - Soni, S.

AU - Sorazu, B.

AU - Spencer, A.P.

AU - Strain, K.A.

AU - Sun, L.

AU - Szczepańczyk, M.J.

AU - Thomas, M.

AU - Thomas, P.

AU - Thorne, K.A.

AU - Toland, K.

AU - Torrie, C.I.

AU - Traylor, G.

AU - Tse, M.

AU - Urban, A.L.

AU - Vajente, G.

AU - Valdes, G.

AU - Vander-Hyde, D.C.

AU - Veitch, P.J.

AU - Venkateswara, K.

AU - Venugopalan, G.

AU - Viets, A.D.

AU - Vo, T.

AU - Vorvick, C.

AU - Wade, M.

AU - Ward, R.L.

AU - Weaver, B.

AU - Weiss, R.

AU - Whittle, C.

AU - Willke, B.

AU - Wipf, C.C.

AU - Xiao, L.

AU - Yamamoto, H.

AU - Yu, H.

AU - Zhang, L.

AU - Zucker, M.E.

AU - Zweizig, J.

PY - 2020/12/1

Y1 - 2020/12/1

N2 - © 2020 IOP Publishing Ltd.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.

AB - © 2020 IOP Publishing Ltd.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.

UR - https://www.scopus.com/pages/publications/85096287396

UR - https://www.scopus.com/pages/publications/85096287396#tab=citedBy

U2 - 10.1088/1361-6382/abbc8c

DO - 10.1088/1361-6382/abbc8c

M3 - Article

SN - 0264-9381

VL - 37

JO - Classical and Quantum Gravity

JF - Classical and Quantum Gravity

IS - 23

M1 - 235007

ER -

Improving the robustness of the advanced LIGO detectors to earthquakes

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