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arXiv · 2311.07063

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

Yuki Kawasaki·Shoki Iwaguchi·Tomohiro Ishikawa·Atsushi Nishizawa·Masaaki Kitaguchi·Yutaka Yamagata·Yanbei Chen·Bin Wu·Ryuma Shimizu·Kurumi Umemura·Kenji Tsuji·Hirohiko Shimizu·Yuta Michimura·Kazuhiro Kobayashi·Takafumi Onishi·Seiji Kawamura
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Abstract

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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Yuki Kawasaki, Shoki Iwaguchi, Tomohiro Ishikawa, Atsushi Nishizawa, Masaaki Kitaguchi, Yutaka Yamagata, Yanbei Chen, Bin Wu, Ryuma Shimizu, Kurumi Umemura, Kenji Tsuji, Hirohiko Shimizu, Yuta Michimura, Kazuhiro Kobayashi, Takafumi Onishi, Seiji Kawamura. 2023-11-13. Sagnac-type neutron displacement-noise-free interferometeric gravitational-wave detector. https://arxiv.org/abs/2311.07063

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