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The 14th KAGRA International Workshop

15–16 May 2026
Perugia - Italy
Europe/Rome timezone

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Session

Instrumentation

15 May 2026, 14:30
Sina Brufani Hotel (Perugia - Italy)

Sina Brufani Hotel

Perugia - Italy

Piazza Italia, 12 - 06100 Perugia - Italy

Conveners

Instrumentation

  • Shinji MIYOKI

Presentation materials

There are no materials yet.

  1. 80. Evaluation of the vibration noise for KAGRA detector
    Takaaki Yokozawa (ICRR, University of Tokyo, Japan)
    15/05/2026, 17:00
    Oral presentation

    KAGRA is a kilometer-scale gravitational-wave interferometer located in Japan. It has two unique features: a cryogenic environment and an underground site. KAGRA joined the O4c observing run in July 2026 with a binary neutron star merger range of 7.5 Mpc. In this talk, we present an evaluation of various environmental noise sources affecting the KAGRA detector, with a particular focus on...

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  2. 79. KAGRA Underground Environment: O4c and a Quiet Period
    Tatsuki Washimi (NAOJ)
    15/05/2026, 17:20
    Oral presentation

    We present a summary of environmental data measured in the KAGRA underground site during O4c, focusing on the period from June to November 2025. The data include seismic motion, acoustic noise, magnetic field, temperature, humidity, atmospheric pressure, and outside weather information. These measurements provide an overview of the underground environmental conditions relevant to KAGRA...

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  3. 82. Birefringence measurement and mitigation techniques
    Marc Eisenmann (NAOJ)
    15/05/2026, 17:40
    Oral presentation

    KAGRA is the only gravitational wave detector operating with crystalline test-masses at cryogenic temperature. While this allow to reduce the thermal noise of the detector, this comes at the expense of operating with complex test-masses. One issue, is the birefringence of these test-masses that can spoil the detector sensitivity.

    In this talk, we will report about the techniques developed...

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  4. 81. Quantum noise reduction schemes for KAGRA post-O5
    Yuhang Zhao (Henan Academy of Sciences)
    15/05/2026, 18:00
    Oral presentation

    Quantum noise has been the limiting noise at high frequency and a relevant noise at low frequency for the sensitivity of current gravitational wave detectors. It is also expected to be a limiting noise source for future interferometric gravitational wave detectors across the whole frequency band. Squeezed vacuum has become a standard tool for reducing quantum noise and led to up to 65\%...

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