Seismic isolation of Advanced LIGO: Review of strategy, instrumentation and performance

By F. Matichard, B. Lantz, R. Mittleman, K. Mason, J. Kissel, B. Abbott, S. Biscans, J. McIver, R. Abbott, S. Abbott and 42 more. 2015

172 citations recorded by the source corpus.

The new generation of gravitational waves detectors require unprecedented levels of isolation from seismic noise. This article reviews the seismic isolation strategy and instrumentation developed for the Advanced LIGO observatories. It summarizes over a decade of research on active inertial isolation and shows the performance recently achieved at the Advanced LIGO observatories. The paper emphasizes the scientific and technical challenges of this endeavor and how they have been addressed. An overview of the isolation strategy is given. It combines multiple layers of passive and active inertial isolation to provide suitable rejection of seismic noise at all frequencies. A detailed presentation of the three active platforms that have been developed is given. They are the hydraulic pre-isolator, the single-stage internal isolator and the two-stage internal isolator. The architecture, instrumentation, control scheme and isolation results are presented for each of the three systems. Results show that the seismic isolation sub-system meets Advanced LIGO’s stringent requirements and robustly supports the operation of the two detectors.

Subfields: Astronomy and Astrophysics, Geophysics, Ocean Engineering

View Paper: https://www.semanticscholar.org/paper/7ee09fe17379526f84955039ea40b78964b28906

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. D. Holz
2. Rana X. Adhikari
3. W. Farr
4. Vicky Kalogera
5. Z. Frei
6. Sascha Husa
7. Stephen Fairhurst
8. Walter Del Pozzo

In Geophysics

1. Stephen Fairhurst
2. P. Lasky
3. C. Haster
4. Vicky Kalogera
5. T. Dent
6. Andrew P. Lundgren
7. Bernard F. Schutz

In Ocean Engineering

1. Stephen Fairhurst
2. Walter Del Pozzo
3. Rana X. Adhikari
4. P. Lasky
5. D. Holz
6. Lionel Martellini
7. P. Jaranowski

Citations in the corpus

• GW150914: The Advanced LIGO Detectors in the Era of First Discoveries (2016, background): “isolation platform which provides 3 orders of magnitude of isolation of its own [23,24].”
• A cryogenic silicon interferometer for gravitational-wave detection (2020, methodology): “The threestage seismic isolation system used in Advanced LIGO [98, 99] will be reused for LIGO Voyager, with minor engineering modifications to accommodate the heavier payload.”