Reducing scattered light in LIGO's third observing run

S. Soni; C. Austin; A. Effler; R. M.S. Schofield; G. González; V. V. Frolov; J. C. Driggers; A. Pele; A. L. Urban; G. Valdes; R. Abbott; C. Adams; R. X. Adhikari; A. Ananyeva; S. Appert; K. Arai; J. S. Areeda; Y. Asali; S. M. Aston; A. M. Baer; M. Ball; S. W. Ballmer; S. Banagiri; D. Barker; L. Barsotti; J. Bartlett; B. K. Berger; J. Betzwieser; D. Bhattacharjee; G. Billingsley; S. Biscans; 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; K. L. Dooley; P. Dupej; S. E. Dwyer; T. Etzel; M. Evans; T. M. Evans; J. Feicht; A. Fernandez-Galiana; P. Fritschel; P. Fulda; M. Fyffe; J. A. Giaime; K. D. Giardina; P. Godwin; E. Goetz; S. Gras; C. Gray; R. Gray; A. C. Green; 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; B. Lantz; 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; R. Penhorwood; 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; E. Schwartz; D. Sellers; T. Shaffer; D. Sigg; B. J.J. Slagmolen; J. R. Smith; 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; G. Vajente; D. C. Vander-Hyde; P. J. Veitch; K. Venkateswara; G. Venugopalan; A. D. Viets; T. Vo; C. Vorvick; M. Wade; R. L. Ward; J. Warner; B. Weaver; R. Weiss; C. Whittle; B. Willke; C. C. Wipf; L. Xiao; H. Yamamoto; Hang Yu; Haocun Yu; L. Zhang; M. E. Zucker; J. Zweizig

doi:10.1088/1361-6382/abc906

Reducing scattered light in LIGO's third observing run

S. Soni^*, C. Austin, A. Effler, R. M.S. Schofield, G. González, V. V. Frolov, J. C. Driggers, A. Pele, A. L. Urban, G. Valdes, R. Abbott, C. Adams, R. X. Adhikari, A. Ananyeva, S. Appert, K. Arai, J. S. Areeda, Y. Asali, S. M. Aston, A. M. BaerM. Ball, S. W. Ballmer, S. Banagiri, D. Barker, L. Barsotti, J. Bartlett, B. K. Berger, J. Betzwieser, D. Bhattacharjee, G. Billingsley, S. Biscans, 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, K. L. Dooley, P. Dupej, S. E. Dwyer, T. Etzel, M. Evans, T. M. Evans, J. Feicht, A. Fernandez-Galiana, P. Fritschel, P. Fulda, M. Fyffe, J. A. Giaime, K. D. Giardina, P. Godwin, E. Goetz, S. Gras, C. Gray, R. Gray, A. C. Green, 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, B. Lantz, 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, R. Penhorwood, 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, E. Schwartz, D. Sellers, T. Shaffer, D. Sigg, B. J.J. Slagmolen, J. R. Smith, 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, G. Vajente, D. C. Vander-Hyde, P. J. Veitch, K. Venkateswara, G. Venugopalan, A. D. Viets, T. Vo, C. Vorvick, M. Wade, R. L. Ward, J. Warner, B. Weaver, R. Weiss, C. Whittle, B. Willke, C. C. Wipf, L. Xiao, H. Yamamoto, Hang Yu, Haocun Yu, L. Zhang, M. E. Zucker, J. Zweizig

^*Corresponding author for this work

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

60 Citations (Scopus)

Abstract

Noise due to scattered light has been a frequent disturbance in the advanced LIGO gravitational wave detectors, hindering the detection of gravitational waves. The non stationary scatter noise caused by low frequency motion can be recognized as arches in the time-frequency plane of the gravitational wave channel. In this paper, we characterize the scattering noise for LIGO and Virgo's third observing run O3 from April, 2019 to March, 2020. We find at least two different populations of scattering noise and we investigate the multiple origins of one of them as well as its mitigation. We find that relative motion between two specific surfaces is strongly correlated with the presence of scattered light and we implement a technique to reduce this motion. We also present an algorithm using a witness channel to identify the times this noise can be present in the detector.

Original language	English
Article number	025016
Journal	Classical and Quantum Gravity
Volume	38
Issue number	2
DOIs	https://doi.org/10.1088/1361-6382/abc906
Publication status	Published - Jan 2021

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10.1088/1361-6382/abc906

Cite this

Soni, S., Austin, C., Effler, A., Schofield, R. M. S., González, G., Frolov, V. V., Driggers, J. C., Pele, A., Urban, A. L., Valdes, G., Abbott, R., Adams, C., Adhikari, R. X., Ananyeva, A., Appert, S., Arai, K., Areeda, J. S., Asali, Y., Aston, S. M., ... Zweizig, J. (2021). Reducing scattered light in LIGO's third observing run. Classical and Quantum Gravity, 38(2), Article 025016. https://doi.org/10.1088/1361-6382/abc906

@article{199bf37fea9442ef8c300502976ab08b,

title = "Reducing scattered light in LIGO's third observing run",

abstract = "Noise due to scattered light has been a frequent disturbance in the advanced LIGO gravitational wave detectors, hindering the detection of gravitational waves. The non stationary scatter noise caused by low frequency motion can be recognized as arches in the time-frequency plane of the gravitational wave channel. In this paper, we characterize the scattering noise for LIGO and Virgo's third observing run O3 from April, 2019 to March, 2020. We find at least two different populations of scattering noise and we investigate the multiple origins of one of them as well as its mitigation. We find that relative motion between two specific surfaces is strongly correlated with the presence of scattered light and we implement a technique to reduce this motion. We also present an algorithm using a witness channel to identify the times this noise can be present in the detector.",

keywords = "LIGO, ground motion, interferometry, scattered light",

author = "S. Soni and C. Austin and A. Effler and Schofield, {R. M.S.} and G. Gonz{\'a}lez and Frolov, {V. V.} and Driggers, {J. C.} and A. Pele and Urban, {A. L.} and G. Valdes 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 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 J. Betzwieser and D. Bhattacharjee and G. Billingsley and S. Biscans 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 Fronzo, {C. Di} and Dooley, {K. L.} and P. Dupej and Dwyer, {S. E.} and T. Etzel and M. Evans and Evans, {T. M.} and J. Feicht and A. Fernandez-Galiana and P. Fritschel 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 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 B. Lantz 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 R. Penhorwood 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 E. Schwartz and D. Sellers and T. Shaffer and D. Sigg and Slagmolen, {B. J.J.} and Smith, {J. R.} 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 G. Vajente 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 J. Warner and B. Weaver and R. Weiss and C. Whittle and B. Willke and Wipf, {C. C.} and L. Xiao and H. Yamamoto and Hang Yu and Haocun Yu and L. Zhang and Zucker, {M. E.} and J. Zweizig",

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

year = "2021",

month = jan,

doi = "10.1088/1361-6382/abc906",

language = "English",

volume = "38",

journal = "Classical and Quantum Gravity",

issn = "0264-9381",

publisher = "IOP Publishing Ltd.",

number = "2",

}

Soni, S, Austin, C, Effler, A, Schofield, RMS, González, G, Frolov, VV, Driggers, JC, Pele, A, Urban, AL, Valdes, G, Abbott, R, Adams, C, Adhikari, RX, Ananyeva, A, Appert, S, Arai, K, Areeda, JS, Asali, Y, Aston, SM, Baer, AM, Ball, M, Ballmer, SW, Banagiri, S, Barker, D, Barsotti, L, Bartlett, J, Berger, BK, Betzwieser, J, Bhattacharjee, D, Billingsley, G, Biscans, S, 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, Fronzo, CD, Dooley, KL, Dupej, P, Dwyer, SE, Etzel, T, Evans, M, Evans, TM, Feicht, J, Fernandez-Galiana, A, Fritschel, P, Fulda, P, Fyffe, M, Giaime, JA, Giardina, KD, Godwin, P, Goetz, E, Gras, S, Gray, C, Gray, R, Green, AC, 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, Lantz, B, 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, Penhorwood, R, 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, Schwartz, E, Sellers, D, Shaffer, T, Sigg, D, Slagmolen, BJJ, Smith, JR, Sorazu, B, Spencer, AP, Strain, KA, Sun, L, Szczepańczyk, MJ, Thomas, M, Thomas, P, Thorne, KA, Toland, K, Torrie, CI, Traylor, G, Tse, M, Vajente, G, Vander-Hyde, DC, Veitch, PJ, Venkateswara, K, Venugopalan, G, Viets, AD, Vo, T, Vorvick, C, Wade, M, Ward, RL, Warner, J, Weaver, B, Weiss, R, Whittle, C, Willke, B, Wipf, CC, Xiao, L, Yamamoto, H, Yu, H, Yu, H, Zhang, L, Zucker, ME & Zweizig, J 2021, 'Reducing scattered light in LIGO's third observing run', Classical and Quantum Gravity, vol. 38, no. 2, 025016. https://doi.org/10.1088/1361-6382/abc906

TY - JOUR

T1 - Reducing scattered light in LIGO's third observing run

AU - Soni, S.

AU - Austin, C.

AU - Effler, A.

AU - Schofield, R. M.S.

AU - González, G.

AU - Frolov, V. V.

AU - Driggers, J. C.

AU - Pele, A.

AU - Urban, A. L.

AU - Valdes, G.

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 - 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 - Betzwieser, J.

AU - Bhattacharjee, D.

AU - Billingsley, G.

AU - Biscans, S.

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 - Fronzo, C. Di

AU - Dooley, K. L.

AU - Dupej, P.

AU - Dwyer, S. E.

AU - Etzel, T.

AU - Evans, M.

AU - Evans, T. M.

AU - Feicht, J.

AU - Fernandez-Galiana, A.

AU - Fritschel, P.

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 - 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 - Lantz, 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 - Penhorwood, R.

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 - Schwartz, E.

AU - Sellers, D.

AU - Shaffer, T.

AU - Sigg, D.

AU - Slagmolen, B. J.J.

AU - Smith, J. R.

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 - Vajente, 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 - Warner, J.

AU - Weaver, B.

AU - Weiss, R.

AU - Whittle, C.

AU - Willke, B.

AU - Wipf, C. C.

AU - Xiao, L.

AU - Yamamoto, H.

AU - Yu, Hang

AU - Yu, Haocun

AU - Zhang, L.

AU - Zucker, M. E.

AU - Zweizig, J.

PY - 2021/1

Y1 - 2021/1

N2 - Noise due to scattered light has been a frequent disturbance in the advanced LIGO gravitational wave detectors, hindering the detection of gravitational waves. The non stationary scatter noise caused by low frequency motion can be recognized as arches in the time-frequency plane of the gravitational wave channel. In this paper, we characterize the scattering noise for LIGO and Virgo's third observing run O3 from April, 2019 to March, 2020. We find at least two different populations of scattering noise and we investigate the multiple origins of one of them as well as its mitigation. We find that relative motion between two specific surfaces is strongly correlated with the presence of scattered light and we implement a technique to reduce this motion. We also present an algorithm using a witness channel to identify the times this noise can be present in the detector.

AB - Noise due to scattered light has been a frequent disturbance in the advanced LIGO gravitational wave detectors, hindering the detection of gravitational waves. The non stationary scatter noise caused by low frequency motion can be recognized as arches in the time-frequency plane of the gravitational wave channel. In this paper, we characterize the scattering noise for LIGO and Virgo's third observing run O3 from April, 2019 to March, 2020. We find at least two different populations of scattering noise and we investigate the multiple origins of one of them as well as its mitigation. We find that relative motion between two specific surfaces is strongly correlated with the presence of scattered light and we implement a technique to reduce this motion. We also present an algorithm using a witness channel to identify the times this noise can be present in the detector.

KW - LIGO

KW - ground motion

KW - interferometry

KW - scattered light

UR - http://www.scopus.com/inward/record.url?scp=85101012170&partnerID=8YFLogxK

U2 - 10.1088/1361-6382/abc906

DO - 10.1088/1361-6382/abc906

M3 - Article

SN - 0264-9381

VL - 38

JO - Classical and Quantum Gravity

JF - Classical and Quantum Gravity

IS - 2

M1 - 025016

ER -

Reducing scattered light in LIGO's third observing run

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