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; 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; 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; 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

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. BaerM. 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, 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, 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

Department of Physics

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

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 (US)
Article number	235007
Journal	Classical and Quantum Gravity
Volume	37
Issue number	23
DOIs	https://doi.org/10.1088/1361-6382/abbc8c
State	Published - Dec 2020

Keywords

LIGO
control
earthquakes
seismic

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1088/1361-6382/abbc8c

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), [235007]. https://doi.org/10.1088/1361-6382/abbc8c

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

@article{030f6ea76537496b9872b210818be33e,

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

abstract = "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.",

keywords = "LIGO, control, earthquakes, seismic",

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

note = "Publisher Copyright: {\textcopyright} 2020 IOP Publishing Ltd.",

year = "2020",

month = dec,

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

language = "English (US)",

volume = "37",

journal = "Classical and Quantum Gravity",

issn = "0264-9381",

publisher = "IOP Publishing Ltd.",

number = "23",

}

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, Anchal

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, Rahul

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, Richard 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

Y1 - 2020/12

N2 - 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 - 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.

KW - LIGO

KW - control

KW - earthquakes

KW - seismic

UR - http://www.scopus.com/inward/record.url?scp=85096287396&partnerID=8YFLogxK

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U2 - 10.1088/1361-6382/abbc8c

DO - 10.1088/1361-6382/abbc8c

M3 - Article

AN - SCOPUS:85096287396

VL - 37

JO - Classical and Quantum Gravity

JF - Classical and Quantum Gravity

SN - 0264-9381

IS - 23

M1 - 235007

ER -

Improving the robustness of the advanced LIGO detectors to earthquakes

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