Ground-based gravitational wave detector using rapidly repeated free-falling test masses

Iwaguchi, Shoki, Wu, Bin, Umemura, Kurumi, Ishikawa, Tomohiro, Tsuji, Kenji, Nishimura, Ryota, Michimura, Yuta, Enomoto, Yutaro, Morisaki, Soichiro, Aso, Yoichi, Akutsu, Tomotada, Kokeyama, Keiko ORCID: https://orcid.org/0000-0002-2896-1992 and Kawamura, Seiji 2026. Ground-based gravitational wave detector using rapidly repeated free-falling test masses. Physical Review D (particles, fields, gravitation, and cosmology) 114 , 044029. 10.1103/492M-XZTX

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Abstract

We propose the jiggled interferometer (JIGI), a novel ground-based gravitational wave detector employing low-frequency noise mitigation similar to that of space-based detectors. Using rapidly repeated free-fall test masses, JIGI eliminates seismic and suspension thermal noise during free fall. Compared to the juggled interferometer, it offers improved angular stability and avoids tracking lasers. We analyze detrending—a required step to remove actuation-induced noise—and show sensitivity gains of about four orders of magnitude in the 0.1–0.3 Hz band, relative to seismic and suspension noise extrapolated from the Cosmic Explorer.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Physical, Chemical & Environmental Sciences Schools > Physics and Astronomy
Publisher:	American Physical Society
ISSN:	2470-0010
Date of Acceptance:	14 July 2026
Last Modified:	19 Oct 2026 11:32
URI:	https://orca.cardiff.ac.uk/id/eprint/190299

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