Classical and Quantum Gravity ( IF 3.6 ) Pub Date : 2021-02-11 , DOI: 10.1088/1361-6382/abc906 S Soni 1 , C Austin 1 , A Effler 2 , R M S Schofield 3 , G Gonzlez 1 , V V Frolov 2 , J C Driggers 4 , A Pele 2 , A L Urban 1 , G Valdes 1 , R Abbott 5 , C Adams 2 , R X Adhikari 5 , A Ananyeva 5 , S Appert 5 , K Arai 5 , J S Areeda 6 , Y Asali 7 , S M Aston 2 , A M Baer 8 , M Ball 3 , S W Ballmer 9 , S Banagiri 10 , D Barker 4 , L Barsotti 11 , J Bartlett 4 , B K Berger 12 , J Betzwieser 2 , D Bhattacharjee 13 , G Billingsley 5 , S Biscans 5, 11 , C D Blair 2 , R M Blair 4 , N Bode 14, 15 , P Booker 14, 15 , R Bork 5 , A Bramley 2 , A F Brooks 5 , D D Brown 16 , A Buikema 11 , C Cahillane 5 , K C Cannon 17 , X Chen 18 , A A Ciobanu 16 , F Clara 4 , S J Cooper 19 , K R Corley 7 , S T Countryman 7 , P B Covas 20 , D C Coyne 5 , L E H Datrier 21 , D Davis 9 , C Di Fronzo 19 , K L Dooley 22, 23 , P Dupej 21 , S E Dwyer 4 , T Etzel 5 , M Evans 11 , T M Evans 2 , J Feicht 5 , A Fernandez-Galiana 11 , P Fritschel 11 , P Fulda 24 , M Fyffe 2 , J A Giaime 1, 2 , K D Giardina 2 , P Godwin 25 , E Goetz 1, 13 , S Gras 11 , C Gray 4 , R Gray 21 , A C Green 24 , E K Gustafson 5 , R Gustafson 26 , J Hanks 4 , J Hanson 2 , T Hardwick 1 , R K Hasskew 2 , M C Heintze 2 , A F Helmling-Cornell 3 , N A Holland 27 , J D Jones 4 , S Kandhasamy 28 , S Karki 3 , M Kasprzack 5 , K Kawabe 4 , N Kijbunchoo 27 , P J King 4 , J S Kissel 4 , Rahul Kumar 4 , M Landry 4 , B B Lane 11 , B Lantz 12 , M Laxen 2 , Y K Lecoeuche 4 , J Leviton 26 , J Liu 14, 15 , M Lormand 2 , A P Lundgren 29 , R Macas 22 , M MacInnis 11 , D M Macleod 22 , G L Mansell 4, 11 , S Mrka 7 , Z Mrka 7 , D V Martynov 19 , K Mason 11 , T J Massinger 11 , F Matichard 5, 11 , N Mavalvala 11 , R McCarthy 4 , D E McClelland 27 , S McCormick 2 , L McCuller 11 , J McIver 5 , T McRae 27 , G Mendell 4 , K Merfeld 3 , E L Merilh 4 , F Meylahn 14, 15 , T Mistry 30 , R Mittleman 11 , G Moreno 4 , C M Mow-Lowry 19 , S Mozzon 29 , A Mullavey 2 , T J N Nelson 2 , P Nguyen 3 , L K Nuttall 29 , J Oberling 4 , Richard J Oram 2 , C Osthelder 5 , D J Ottaway 16 , H Overmier 2 , J R Palamos 3 , W Parker 2, 31 , E Payne 32 , R Penhorwood 26 , C J Perez 4 , M Pirello 4 , H Radkins 4 , K E Ramirez 33 , J W Richardson 5 , K Riles 26 , N A Robertson 5, 21 , J G Rollins 5 , C L Romel 4 , J H Romie 2 , M P Ross 34 , K Ryan 4 , T Sadecki 4 , E J Sanchez 5 , L E Sanchez 5 , T R Saravanan 28 , R L Savage 4 , D Schaetzl 5 , R Schnabel 35 , E Schwartz 2 , D Sellers 2 , T Shaffer 4 , D Sigg 4 , B J J Slagmolen 27 , J R Smith 6 , B Sorazu 21 , A P Spencer 21 , K A Strain 21 , L Sun 5 , M J Szczepańczyk 24 , M Thomas 2 , P Thomas 4 , K A Thorne 2 , K Toland 21 , C I Torrie 5 , G Traylor 2 , M Tse 11 , G Vajente 5 , D C Vander-Hyde 9 , P J Veitch 16 , K Venkateswara 34 , G Venugopalan 5 , A D Viets 36 , T Vo 9 , C Vorvick 4 , M Wade 37 , R L Ward 27 , J Warner 4 , B Weaver 4 , R Weiss 11 , C Whittle 11 , B Willke 14, 15 , C C Wipf 5 , L Xiao 5 , H Yamamoto 5 , Hang Yu 11 , Haocun Yu 11 , L Zhang 5 , M E Zucker 5, 11 , J Zweizig 5
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.
中文翻译：
在LIGO的第三次观测中减少散射光
在先进的LIGO重力波检测器中，由于散射光引起的噪声已成为常见的干扰，从而阻碍了重力波的检测。由低频运动引起的非平稳散射噪声可以识别为重力波通道的时频平面中的弧形。在本文中，我们描述了LIGO和处女座从2019年4月至2020年3月进行的第三次观测运行O3的散射噪声。我们发现至少两个不同的散射噪声种群，我们研究了其中一个的多重起源以及减轻。我们发现两个特定表面之间的相对运动与散射光的存在密切相关，并且我们实施了一种减少这种运动的技术。
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