Construction of KAGRA: an Underground Gravitational Wave Observatory

T. Akutsu , S. Araki , M. Ando , Tomasz Starecki


The major construction and initial-phase operation of a second-generation gravitational-wave detector, KAGRA, has been completed. The entire 3 km detector is installed underground in a mine in order to be isolated from background seismic vibrations on the surface. This allows us to achieve a good sensitivity at low frequencies and high stability of the detector. Bare-bones equipment for the interferometer operation has been installed and the first test run was accomplished in March and April of 2016 with a rather simple configuration. The initial configuration of KAGRA is called iKAGRA. In this paper, we summarize the construction of KAGRA, including a study of the advantages and challenges of building an underground detector, and the operation of the iKAGRA interferometer together with the geophysics interferometer that has been constructed in the same tunnel.
Collective authorKAGRA Collaboration
Author T. Akutsu
T. Akutsu,,
, S. Araki
S. Araki,,
, M. Ando
M. Ando,,
, Tomasz Starecki ISE
Tomasz Starecki,,
- The Institute of Electronic Systems
Total number of authors227
Journal seriesProgress of Theoretical and Experimental Physics, ISSN 2050-3911
Issue year2018
Publication size in sheets0.85
Languageen angielski
1712.00148.pdf 1,019.46 KB
Score (nominal)35
ScoreMinisterial score [Punktacja MNiSW] = 30.0, 25-01-2018, ArticleFromJournal
Ministerial score (2013-2016) [Punktacja MNiSW (2013-2016)] = 35.0, 25-01-2018, ArticleFromJournal
Publication indicators WoS Impact Factor [Impact Factor WoS]: 2016 = 2.039 (2) - 2016=2.241 (5)
Citation count*3 (2018-06-11)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.