Reducing scattered light in LIGO’s third observing run
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 gravitatio...
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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IOP Publishing
2022
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| Online Access: | https://hdl.handle.net/1721.1/142169 |
| _version_ | 1826210136277909504 |
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| author | Mavalvala, Nergis |
| author2 | LIGO (Observatory : Massachusetts Institute of Technology) |
| author_facet | LIGO (Observatory : Massachusetts Institute of Technology) Mavalvala, Nergis |
| author_sort | Mavalvala, Nergis |
| collection | MIT |
| description | 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. |
| first_indexed | 2024-09-23T14:44:30Z |
| format | Article |
| id | mit-1721.1/142169 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T14:44:30Z |
| publishDate | 2022 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/1421692023-04-13T15:57:44Z Reducing scattered light in LIGO’s third observing run Mavalvala, Nergis LIGO (Observatory : Massachusetts Institute of Technology) 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. 2022-04-28T13:26:09Z 2022-04-28T13:26:09Z 2021 2022-04-28T13:12:31Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/142169 Mavalvala, Nergis. 2021. "Reducing scattered light in LIGO’s third observing run." Classical and Quantum Gravity, 38 (2). en 10.1088/1361-6382/ABC906 Classical and Quantum Gravity Attribution-NonCommercial-ShareAlike 4.0 International https://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf IOP Publishing arXiv |
| spellingShingle | Mavalvala, Nergis Reducing scattered light in LIGO’s third observing run |
| title | Reducing scattered light in LIGO’s third observing run |
| title_full | Reducing scattered light in LIGO’s third observing run |
| title_fullStr | Reducing scattered light in LIGO’s third observing run |
| title_full_unstemmed | Reducing scattered light in LIGO’s third observing run |
| title_short | Reducing scattered light in LIGO’s third observing run |
| title_sort | reducing scattered light in ligo s third observing run |
| url | https://hdl.handle.net/1721.1/142169 |
| work_keys_str_mv | AT mavalvalanergis reducingscatteredlightinligosthirdobservingrun |