Sensitivity and performance of the Advanced LIGO detectors in the third observing run

A. Buikema; C. Cahillane; G. L. Mansell; C. D. Blair; 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; J. Betzwieser; D. Bhattacharjee; G. Billingsley; S. Biscans; R. M. Blair; N. Bode; P. Booker; R. Bork; A. Bramley; A. F. Brooks; D. D. Brown; 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; 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; 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; 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; B. O'Reilly; C. Osthelder; D. J. Ottaway; H. Overmier; J. R. Palamos; W. Parker; E. Payne; A. Pele; 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; R. M.S. Schofield; E. Schwartz; 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; 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:10.1103/PhysRevD.102.062003

Sensitivity and performance of the Advanced LIGO detectors in the third observing run

A. Buikema, C. Cahillane, G. L. Mansell, C. D. Blair, 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. BarsottiJ. Bartlett, B. K. Berger, J. Betzwieser, D. Bhattacharjee, G. Billingsley, S. Biscans, R. M. Blair, N. Bode, P. Booker, R. Bork, A. Bramley, A. F. Brooks, D. D. Brown, 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, 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, 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, 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, B. O'Reilly, C. Osthelder, D. J. Ottaway, H. Overmier, J. R. Palamos, W. Parker, E. Payne, A. Pele, 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, R. M.S. Schofield, E. Schwartz, 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, 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

Department of Physics

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

251 Scopus citations

Abstract

On April 1st, 2019, the Advanced Laser Interferometer Gravitational-Wave Observatory (aLIGO), joined by the Advanced Virgo detector, began the third observing run, a year-long dedicated search for gravitational radiation. The LIGO detectors have achieved a higher duty cycle and greater sensitivity to gravitational waves than ever before, with LIGO Hanford achieving angle-averaged sensitivity to binary neutron star coalescences to a distance of 111 Mpc, and LIGO Livingston to 134 Mpc with duty factors of 74.6% and 77.0% respectively. The improvement in sensitivity and stability is a result of several upgrades to the detectors, including doubled intracavity power, the addition of an in-vacuum optical parametric oscillator for squeezed-light injection, replacement of core optics and end reaction masses, and installation of acoustic mode dampers. This paper explores the purposes behind these upgrades, and explains to the best of our knowledge the noise currently limiting the sensitivity of each detector.

Original language	English (US)
Article number	062003
Journal	Physical Review D
Volume	102
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevD.102.062003
State	Published - Sep 2020

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1103/PhysRevD.102.062003

Cite this

Buikema, A., Cahillane, C., Mansell, G. L., Blair, C. D., 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., ... Zweizig, J. (2020). Sensitivity and performance of the Advanced LIGO detectors in the third observing run. Physical Review D, 102(6), Article 062003. https://doi.org/10.1103/PhysRevD.102.062003

Buikema, A, Cahillane, C, Mansell, GL, Blair, CD, 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, Betzwieser, J, Bhattacharjee, D, Billingsley, G, Biscans, S, Blair, RM, Bode, N, Booker, P, Bork, R, Bramley, A, Brooks, AF, Brown, DD, 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, Dooley, KL, 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, 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, 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, O'Reilly, B, Osthelder, C, Ottaway, DJ, Overmier, H, Palamos, JR, Parker, W, Payne, E, Pele, A, 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, Schofield, RMS, Schwartz, E, 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, 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 2020, 'Sensitivity and performance of the Advanced LIGO detectors in the third observing run', Physical Review D, vol. 102, no. 6, 062003. https://doi.org/10.1103/PhysRevD.102.062003

@article{5a9c97914cbc4e8ba272eea55846013f,

title = "Sensitivity and performance of the Advanced LIGO detectors in the third observing run",

abstract = "On April 1st, 2019, the Advanced Laser Interferometer Gravitational-Wave Observatory (aLIGO), joined by the Advanced Virgo detector, began the third observing run, a year-long dedicated search for gravitational radiation. The LIGO detectors have achieved a higher duty cycle and greater sensitivity to gravitational waves than ever before, with LIGO Hanford achieving angle-averaged sensitivity to binary neutron star coalescences to a distance of 111 Mpc, and LIGO Livingston to 134 Mpc with duty factors of 74.6% and 77.0% respectively. The improvement in sensitivity and stability is a result of several upgrades to the detectors, including doubled intracavity power, the addition of an in-vacuum optical parametric oscillator for squeezed-light injection, replacement of core optics and end reaction masses, and installation of acoustic mode dampers. This paper explores the purposes behind these upgrades, and explains to the best of our knowledge the noise currently limiting the sensitivity of each detector.",

author = "A. Buikema and C. Cahillane and Mansell, {G. L.} and Blair, {C. D.} 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 J. Betzwieser and D. Bhattacharjee and G. Billingsley and S. Biscans 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 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 Dooley, {K. L.} 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 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 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 B. O'Reilly and C. Osthelder and Ottaway, {D. J.} and H. Overmier and Palamos, {J. R.} and W. Parker and E. Payne and A. Pele 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 Schofield, {R. M.S.} and E. Schwartz 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 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 authors. Published by the American Physical Society.",

year = "2020",

month = sep,

doi = "10.1103/PhysRevD.102.062003",

language = "English (US)",

volume = "102",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "6",

}

TY - JOUR

T1 - Sensitivity and performance of the Advanced LIGO detectors in the third observing run

AU - Buikema, A.

AU - Cahillane, C.

AU - Mansell, G. L.

AU - Blair, C. D.

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 - Betzwieser, J.

AU - Bhattacharjee, D.

AU - Billingsley, G.

AU - Biscans, S.

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 - 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 - Dooley, K. L.

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 - 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 - 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 - O'Reilly, B.

AU - Osthelder, C.

AU - Ottaway, D. J.

AU - Overmier, H.

AU - Palamos, J. R.

AU - Parker, W.

AU - Payne, E.

AU - Pele, A.

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 - Schofield, R. M.S.

AU - Schwartz, E.

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 - 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 - 2020/9

Y1 - 2020/9

N2 - On April 1st, 2019, the Advanced Laser Interferometer Gravitational-Wave Observatory (aLIGO), joined by the Advanced Virgo detector, began the third observing run, a year-long dedicated search for gravitational radiation. The LIGO detectors have achieved a higher duty cycle and greater sensitivity to gravitational waves than ever before, with LIGO Hanford achieving angle-averaged sensitivity to binary neutron star coalescences to a distance of 111 Mpc, and LIGO Livingston to 134 Mpc with duty factors of 74.6% and 77.0% respectively. The improvement in sensitivity and stability is a result of several upgrades to the detectors, including doubled intracavity power, the addition of an in-vacuum optical parametric oscillator for squeezed-light injection, replacement of core optics and end reaction masses, and installation of acoustic mode dampers. This paper explores the purposes behind these upgrades, and explains to the best of our knowledge the noise currently limiting the sensitivity of each detector.

AB - On April 1st, 2019, the Advanced Laser Interferometer Gravitational-Wave Observatory (aLIGO), joined by the Advanced Virgo detector, began the third observing run, a year-long dedicated search for gravitational radiation. The LIGO detectors have achieved a higher duty cycle and greater sensitivity to gravitational waves than ever before, with LIGO Hanford achieving angle-averaged sensitivity to binary neutron star coalescences to a distance of 111 Mpc, and LIGO Livingston to 134 Mpc with duty factors of 74.6% and 77.0% respectively. The improvement in sensitivity and stability is a result of several upgrades to the detectors, including doubled intracavity power, the addition of an in-vacuum optical parametric oscillator for squeezed-light injection, replacement of core optics and end reaction masses, and installation of acoustic mode dampers. This paper explores the purposes behind these upgrades, and explains to the best of our knowledge the noise currently limiting the sensitivity of each detector.

UR - http://www.scopus.com/inward/record.url?scp=85092718139&partnerID=8YFLogxK

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U2 - 10.1103/PhysRevD.102.062003

DO - 10.1103/PhysRevD.102.062003

M3 - Article

AN - SCOPUS:85092718139

SN - 2470-0010

VL - 102

JO - Physical Review D

JF - Physical Review D

IS - 6

M1 - 062003

ER -

Sensitivity and performance of the Advanced LIGO detectors in the third observing run

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