Reducing scattered light in LIGO's third observing run

The LIGO Scientific Collaboration; A. P. Lundgren; R. Macas; S. Mozzon; L. K. Nuttall

doi:10.1088/1361-6382/abc906

Reducing scattered light in LIGO's third observing run

The LIGO Scientific Collaboration, A. P. Lundgren, R. Macas, S. Mozzon, L. K. Nuttall

Institute of Cosmology & Gravitation

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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'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
Number of pages	23
Journal	Classical and Quantum Gravity
Volume	38
Issue number	2
DOIs	https://doi.org/10.1088/1361-6382/abc906
Publication status	Published - 14 Dec 2020

Keywords

astro-ph.IM
scattered light
LIGO
ground motion
interferometry

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10.1088/1361-6382/abc906

Soni_et_al_2020_AAM
This Accepted Manuscript is available for reuse under a CC BY-NC-ND licence after the 12 month embargo period provided that all the terms and conditions of the licence are adhered to.
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https://iopscience.iop.org/article/10.1088/1361-6382/abc906/meta

Data availability statement for 'Reducing scattered light in LIGO's third observing run'.
Lundgren, A. (Creator), Macas, R. (Creator), Mozzon, S. (Creator) & Nuttall, L. (Creator), IOP Publishing, 14 Dec 2020
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Cite this

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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'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 = "astro-ph.IM, scattered light, LIGO, ground motion, interferometry",

author = "{The LIGO Scientific Collaboration} and S. Soni and C. Austin and A. Effler and Schofield, {R. M. S.} and G. Gonzalez and Frolov, {V. V.} and Driggers, {J. C.} and A. Pele and Urban, {A. L.} and G. Valdes and R. Abbott 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 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 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 Lundgren, {A. P.} and R. Macas and S. Mozzon and Nuttall, {L. K.}",

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

AU - The LIGO Scientific Collaboration

AU - Soni, S.

AU - Austin, C.

AU - Effler, A.

AU - Schofield, R. M. S.

AU - Gonzalez, G.

AU - Frolov, V. V.

AU - Driggers, J. C.

AU - Pele, A.

AU - Urban, A. L.

AU - Valdes, G.

AU - Abbott, R.

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 - 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 - 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 - Lundgren, A. P.

AU - Macas, R.

AU - Mozzon, S.

AU - Nuttall, L. K.

N1 - 24 pages, 15 figures, 1 table. DOI not currently working: 10.1088/1361-6382/abc906

PY - 2020/12/14

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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'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'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 - astro-ph.IM

KW - scattered light

KW - LIGO

KW - ground motion

KW - interferometry

UR - https://arxiv.org/pdf/2007.14876.pdf

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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Keywords

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Data availability statement for 'Reducing scattered light in LIGO's third observing run'.

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