Detector configuration of KAGRA–the Japanese cryogenic gravitational-wave detector

By K. Somiya. 2011

774 citations recorded by the source corpus.

The construction of the Japanese second-generation gravitational-wave detector KAGRA (previously called LCGT) has been started. In the next 6–7 years, we will be able to observe the spacetime ripple from faraway galaxies. KAGRA is equipped with the latest advanced technologies. The entire 3 km long detector is located in the underground to be isolated from the seismic motion, the core optics are cooled down to 20 K to reduce thermal fluctuations and quantum non-demolition techniques are used to decrease quantum noise. In this paper, we introduce the detector configuration of KAGRA, its design, strategy and downselection of parameters.

Subfields: Astronomy and Astrophysics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/9a2668da350753f119aea89801cb51042342662c

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In Astronomy and Astrophysics

1. B. Metzger
2. Michela Mapelli
3. D. Holz
4. Luca Baiotti
5. Ilya Mandel
6. Maya Fishbach
7. Mario Spera
8. Bing Zhang

In Statistical and Nonlinear Physics

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3. J. Lattimer
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5. S. Nissanke
6. C. Berry
7. Simon Stevenson
8. B. Krishnan

Citations in the corpus

• GLADE: A galaxy catalogue for multimessenger searches in the advanced gravitational-wave detector era (2018, background): “Since in the upcoming years more GW detectors, such as KAGRA (Somiya 2012) and LIGOIndia (Iyer at al.”
• The long-term evolution of neutron star merger remnants { II. Radioactively powered transients (2013, background): “…& Georgieva 2013; Rosswog, Piran & Nakar 2013; Piran, Nakar & Rosswog 2013) By the end of this decade the second generation of ground- based GW detectors is expected to be running at their intended design sensitivities (Harry & LIGO Scientific Collaboration 2010; Accadia et al. 2011; Somiya 2012).”
• Search for Gravitational Lensing Signatures in LIGO-Virgo Binary Black Hole Events (2019, background): “Upcoming observing runs will see further sensitivity upgrades to both LIGO and Virgo, as well as the prospects of a fourth detector, KAGRA (Somiya 2012; Aso et al. 2013; Akutsu et al. 2018), joining the network.”
• The Masses and Spins of Neutron Stars and Stellar-Mass Black Holes (2014, background): “The era of direct gravitational wave detections is expected to commence in a few years, when second-generation ground-based detectors such as Advanced LIGO [360], Advanced Virgo [361], KAGRA [362], and LIGO-India”
• A cryogenic silicon interferometer for gravitational-wave detection (2020, neutral): “To operate an interferometer at temperatures in the 10–20 K regime requires imposing an austere heat budget on the test mass, which in turn makes it difficult to achieve high circulating power in the arms [11, 20].”