Magnetic coupling to the advanced Virgo payloads and its impact on the low frequency sensitivity
Review of Scientific Instruments, ISSN: 1089-7623, Vol: 89, Issue: 11, Page: 114501
2018
- 13Citations
- 6Captures
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Article Description
We study the electromagnetic coupling of the Advanced Virgo (AdV) input mirror payload in response to a slowly time-varying magnetic field. As the problem is not amenable to analytical solution, we employ and validate a finite element (FE) analysis approach. The FE model is built to represent as faithfully as possible the real object, and it has been validated by comparison with experimental measurements. The intent is to estimate the induced currents and the magnetic field in the neighbourhood of the payload. The procedure found 21 equivalent electrical configurations that are compatible with the measurements. These have been used to compute the magnetic noise contribution to the total AdV strain noise. At the current stage of development, AdV seems to be unaffected by magnetic noise, but we foresee a non-negligible coupling once AdV reaches the design sensitivity.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85056114779&origin=inward; http://dx.doi.org/10.1063/1.5045397; http://www.ncbi.nlm.nih.gov/pubmed/30501330; https://pubs.aip.org/rsi/article/89/11/114501/363980/Magnetic-coupling-to-the-advanced-Virgo-payloads; http://aip.scitation.org/doi/10.1063/1.5045397; https://aip.scitation.org/doi/10.1063/1.5045397
AIP Publishing
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