Construction of KAGRA: an Underground Gravitational Wave Observatory
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 lowfrequencies and high stability of the detector. Bare-bones equipment for the interferometer operation has been installed and the first test runwas 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.
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Award ID(s):
Publication Date:
NSF-PAR ID:
10060066
Journal Name:
Progress of Theoretical and Experimental Physics
Volume:
2018
Issue:
1
Page Range or eLocation-ID:
013F01
ISSN:
2050-3911
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