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Sagnac-type neutron displacement-noise-free interferometeric gravitational-wave detector

Yuki KawasakiDepartment of Physics , Nagoya University , Nagoya , Aichi 464-8602 , Japan; ,Shoki IwaguchiDepartment of Physics , Nagoya University , Nagoya , Aichi 464-8602 , Japan; ,Tomohiro IshikawaDepartment of Physics , Nagoya University , Nagoya , Aichi 464-8602 , Japan; ,A. NishizawaDepartment of Physics , Graduate School of Advanced Science and Engineering , Hiroshima University , 1-3-1 Kagamiyama , Higashi-Hiroshima , Hiroshima 739-8526 , Japan;Masaaki KitaguchiThe Kobayashi- Maskawa Institute for the Origin of Particles and the Universe , Nagoya University , Nagoya , Aichi 464-8602 , Japan;Yutaka YamagataRIKEN Center for Advanced PhotonicsYanbei ChenCentre for Theoretical Physics and AstrophysicsBin WuDepartment of Physics , Nagoya University , Nagoya , Aichi 464-8602 , Japan; ,Ryuma ShimizuDepartment of Physics , Nagoya University , Nagoya , Aichi 464-8602 , Japan; ,Kurumi UmemuraDepartment of Physics , Nagoya University , Nagoya , Aichi 464-8602 , Japan; ,Kenji TsujiDepartment of Physics , Nagoya University , Nagoya , Aichi 464-8602 , Japan; ,Hirohiko M. ShimizuThe Kobayashi- Maskawa Institute for the Origin of Particles and the Universe , Nagoya University , Nagoya , Aichi 464-8602 , Japan;Yuta MichimuraLIGO Laboratory , California Institute of Technology , Pasadena , California 91125 , USA;Kazuhiro KobayashiEquipment Development Support Section , Technical Center of Nagoya University , Nagoya , Aichi 464-8602 , Japan;Onishi, TakafumiEquipment Development Support Section , Technical Center of Nagoya University , Nagoya , Aichi 464-8602 , Japan;Seiji KawamuraDepartment of Physics , Nagoya University , Nagoya , Aichi 464-8602 , Japan; ,

2023en

ABI

Annotatsiya

The detection of low-frequency gravitational waves on Earth requires the reduction of displacement noise, which dominates the low-frequency band. One method to cancel test mass displacement noise is a neutron displacement-noise-free interferometer (DFI). This paper proposes a new neutron DFI configuration, a Sagnac-type neutron DFI, which uses a Sagnac interferometer in place of the Mach-Zehnder interferometer. We demonstrate that a sensitivity of the Sagnac-type neutron DFI is higher than that of a conventional neutron DFI with the same interferometer scale. This configuration is particularly significant for neutron DFIs with limited space for construction and limited flux from available neutron sources.

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DOI: 10.48550/arxiv.2311.07063

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