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GWADW2023 - Gravitational-Wave Advanced Detector Workshop

21–27 May 2023
Hotel Hermitage, La Biodola, Isola d'Elba
Europe/Rome timezone

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Session

Low Frequency Noise, Control and Sensing 2

LFSC2
24 May 2023, 09:00
Hotel Hermitage, La Biodola, Isola d'Elba

Hotel Hermitage, La Biodola, Isola d'Elba

Conveners

Low Frequency Noise, Control and Sensing 2

  • Conor Mow-Lowry (Vrije Universiteit Amsterdam and Nikhef)
  • Katherine Dooley (Cardiff University)
  • Paola Puppo (INFN - ROMA)

Description

Suspension modeling, integration with sensing and control, linear control and Neural Networks

Presentation materials

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  1. 11. Mitigating low-frequency noise: role of tilt, software tools, controller optimization
    Artem Basalaev (Universität Hamburg)
    24/05/2023, 09:00
    Low Frequency Sensing and Control
    Presentation

    Tilt-induced noise plays a crucial role in current and planned gravitational-wave (GW) detectors, as well as in smaller seismically-stabilized platforms. We present an example case for seismically-isolated platform "VATIGrav" in our laboratory, discussing tilt measurement setup, modelling of system performance and potential mitigation strategies. In this work we use general-purpose open source...

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  2. 84. A Systems Approach to Evaluating the Status of ET-LF Seismic Attenuation Proposals
    Nathan Holland (Nikhef/VU Amsterdam)
    24/05/2023, 09:20
    Low Frequency Sensing and Control
    Presentation

    The Einstein Telescope low-frequency (ET-LF) interferometers will extend the detection band for gravitational-waves down to 3 Hz. Significant design decisions, such as an underground infrastructure, have already been taken. With the instrument proposal due in the mid-2020’s other design decisions are under active deliberation.
    Critical to achieving the displacement sensitivity of ET-LF is the...

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  3. 102. The “Akìnetos” Large-band Tiltmeter for Virgo ground tilt measurement
    Annalisa Allocca (Universita' Federico II di Napoli - INFN Napoli)
    24/05/2023, 09:40
    Low Frequency Sensing and Control
    Presentation

    Newtonian noise (NN) is one of the limiting noise sources for the low-frequency sensitivity of GW detectors. To measure this contribution, during O3 a tiltmeter was installed in Virgo as part of a NN reduction system. As tiltmeter, we exploited the prototype balance for the Archimedes experiment, devoted to the measurement of the interaction between quantum vacuum energy and gravity. The same...

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  4. 77. MIMO approach for the longitudinal control of Advanced Virgo plus: interferometer and filter cavity
    Enzo Tapia (Nikhef)
    24/05/2023, 10:00
    Low Frequency Sensing and Control
    Presentation

    Gravitational Wave (GW) detectors must use control loops to achieve the desired working point. Typically, these detectors have 4 or 5 main longitudinal Degrees of Freedom (DoFs) for which it is usually possible to extract suitable error signals by design. Therefore, they can be considered as diagonal systems allowing to close all the loops following a typical Single-Input Single-Output (SISO)...

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