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  Prospects for improving the sensitivity of the cryogenic gravitational wave detector KAGRA

Michimura, Y., Komori, K., Enomoto, Y., Nagano, K., Nishizawa, A., Hirose, E., et al. (2020). Prospects for improving the sensitivity of the cryogenic gravitational wave detector KAGRA. Physical Review D, 102(2): 022008. doi:10.1103/PhysRevD.102.022008.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-B492-9 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-D478-4
Genre: Journal Article

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 Creators:
Michimura, Yuta, Author
Komori, Kentaro, Author
Enomoto, Yutaro, Author
Nagano, Koji, Author
Nishizawa, Atsushi, Author
Hirose, Eiichi, Author
Leonardi, Matteo, Author
Capocasa, Eleonora, Author
Aritomi, Naoki, Author
Zhao, Yuhang, Author
Flaminio, Raffaele, Author
Ushiba, Takafumi, Author
Yamada, Tomohiro, Author
Wei, Li-Wei1, Author              
Takeda, Hiroki, Author
Tanioka, Satoshi, Author
Ando, Masaki, Author
Yamamoto, Kazuhiro, Author
Hayama, Kazuhiro, Author
Haino, Sadakazu, Author
Somiya, Kentaro, Author more..
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              

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Free keywords: General Relativity and Quantum Cosmology, gr-qc, Astrophysics, Instrumentation and Methods for Astrophysics, astro-ph.IM, Physics, Instrumentation and Detectors, physics.ins-det
 Abstract: Upgrades to improve the sensitivity of gravitational wave detectors enable more frequent detections and more precise source parameter estimation. Unlike other advanced interferometric detectors such as Advanced LIGO and Advanced Virgo, KAGRA requires different approach for the upgrade since it is the only detector which employs cryogenic cooling of the test masses. In this paper, we describe possible KAGRA upgrades with technologies focusing on different detector bands, and compare the impacts on the detection of compact binary coalescences. We show that either fivefold improvement in $100 M_{\odot}$--$100 M_{\odot}$ binary black hole range, a factor of 1.3 improvement in binary neutron star range, or a factor of 1.7 improvement in the sky localization of binary neutron stars is well feasible with upgrades which do not require changes in the existing cryogenic or vacuum infrastructure. We also show that twofold broadband sensitivity improvement is possible by applying multiple upgrades to the detector.

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 Dates: 2020-06-162020
 Publication Status: Published in print
 Pages: 10 pages, 2 figures
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 Table of Contents: -
 Rev. Type: -
 Identifiers: arXiv: 2006.08970
URI: http://arxiv.org/abs/2006.08970
DOI: 10.1103/PhysRevD.102.022008
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Title: Physical Review D
Source Genre: Journal
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Pages: - Volume / Issue: 102 (2) Sequence Number: 022008 Start / End Page: - Identifier: -