Gravitational wave detection with high frequency phonon trapping acoustic cavities

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    Abstract

    © 2014 American Physical Society. There are a number of theoretical predictions for astrophysical and cosmological objects, which emit high frequency (106-109Hz) gravitation waves (GW) or contribute somehow to the stochastic high frequency GW background. Here we propose a new sensitive detector in this frequency band, which is based on existing cryogenic ultrahigh quality factor quartz bulk acoustic wave cavity technology, coupled to near-quantum-limited SQUID amplifiers at 20 mK. We show that spectral strain sensitivities reaching 10-22 per Hz per mode is possible, which in principle can cover the frequency range with multiple (>100) modes with quality factors varying between 106 and 1010 allowing wide bandwidth detection. Due to its compactness and well-established manufacturing process, the system is easily scalable into arrays and distributed networks that can also impact the overall sensitivity and introduce coincidence analysis to ensure no false detections.
    Original languageEnglish
    Article number102005
    Pages (from-to)102005-1-9
    Number of pages9
    JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
    Volume90
    Issue number10
    DOIs
    Publication statusPublished - 24 Nov 2014

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    gravitational waves
    trapping
    cavities
    acoustics
    Q factors
    gravitation
    void ratio
    cryogenics
    astrophysics
    manufacturing
    quartz
    amplifiers
    frequency ranges
    bandwidth
    sensitivity
    detectors
    predictions

    Cite this

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    abstract = "{\circledC} 2014 American Physical Society. There are a number of theoretical predictions for astrophysical and cosmological objects, which emit high frequency (106-109Hz) gravitation waves (GW) or contribute somehow to the stochastic high frequency GW background. Here we propose a new sensitive detector in this frequency band, which is based on existing cryogenic ultrahigh quality factor quartz bulk acoustic wave cavity technology, coupled to near-quantum-limited SQUID amplifiers at 20 mK. We show that spectral strain sensitivities reaching 10-22 per Hz per mode is possible, which in principle can cover the frequency range with multiple (>100) modes with quality factors varying between 106 and 1010 allowing wide bandwidth detection. Due to its compactness and well-established manufacturing process, the system is easily scalable into arrays and distributed networks that can also impact the overall sensitivity and introduce coincidence analysis to ensure no false detections.",
    author = "Maxim Goryachev and Michael Tobar",
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    AU - Tobar, Michael

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    AB - © 2014 American Physical Society. There are a number of theoretical predictions for astrophysical and cosmological objects, which emit high frequency (106-109Hz) gravitation waves (GW) or contribute somehow to the stochastic high frequency GW background. Here we propose a new sensitive detector in this frequency band, which is based on existing cryogenic ultrahigh quality factor quartz bulk acoustic wave cavity technology, coupled to near-quantum-limited SQUID amplifiers at 20 mK. We show that spectral strain sensitivities reaching 10-22 per Hz per mode is possible, which in principle can cover the frequency range with multiple (>100) modes with quality factors varying between 106 and 1010 allowing wide bandwidth detection. Due to its compactness and well-established manufacturing process, the system is easily scalable into arrays and distributed networks that can also impact the overall sensitivity and introduce coincidence analysis to ensure no false detections.

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