[Press Conference / Press Tour] Milestone: Underground Tunnel for KAGRA Completed


The Large-Scale Cryogenic Gravitational Wave Telescope (KAGRA) Group announced today that the L-shaped 7 km tunnel underground Mt. Ikenoyama, Kamioka, is now complete and ready to host the 3-km-scale cryogenic interferometer designed to directly detect gravitational waves for the fist time in history. KAGRA is principally operated by ICRR, with two main joint-research institutions, KEK and NAOJ, involving 231 scientists from 31 institutions worldwide.

KAGRA is the only kilometer-scale gravitational wave detector in the world ever to be constructed underground where the seismic noise level is low (a hundredth of that of the ground surface). At the end of March 2014, the KAGRA group completed the excavation of its underground tunnel which has a total length of 7,697 m with two 3-km arms, setting an important milestone for the completion of the tunnel today.

The collaboration will soon start the installation of laboratory facilities and detector components, in preparation for the initial operation at the end of 2015. The full-scale operation is planned to start in JFY2017.

[Press Conference]

Date&Time:July 4, 2014
Press Tour: 13: 20-14:10 (13:00 Reception)
Press Conference: 15:00-15:30 (14:30 Reception)
Venue: Hokubu Building, 238 Higashi-Mozumi, Kamioka-cho, Hida, Gifu
Language: Japanese 
Speaker:President of the University of Tokyo ・・・・・・Junichi Hamada 
Director of ICRR ・・・・・・・・・Prof. Takaaki Kajita 
Head of Gravitational Wave Project Office, ICRR ・・・・Prof. Masatake Ohashi
Contents:①Address・・・・・・・・・・・・・ Junichi Hamada 
② Briefing: KAGRA and the Completed Tunnel ・・・・・・・Takaaki Kajita
Moderator: Assoc. Prof. Shinji Miyoki Gravitational Wave Project Office, ICRR

[KAGRA Tunnel Press Tour]

13:00Reception at Hokubu Building 
238 Higashi-Mozumi, Kamioka-cho, Hida, Gifu 
13:20Group Transportation to the KAGRA’s Underground Tunnel 
Transportation: microbus (Helmets are provided) 
Escort: Assoc. Prof. Shinji Miyoki (ICRR) 
13:40 KAGRA Tunnel Tour
The fist floor and the second floor of the Central Lab. 
14:10 Return: Depart from the KAGRA Tunnel Entrance
14:30 Gravitational Wave Project Office (GWPO)
Transfer to the Press Conference room.

Media Contact for Further Inquiries

・KAGRA-PR: Assoc. Prof. Shinji Miyoki
・PR Office: Misato Hayashida
 TEL: 04-7136-5148
 E-mail: misato@icrr.u-tokyo.ac.jp


1. Image Data(Please refer to credit.txt for credits.)
KAGRA Tunnel movies (111MB)
KAGRA Tunnel photos (103MB) 
2. KAGRA Introduction Movie (Japanese) – July 4, 2014


2014.03.31 [Press Release] Excavation of KAGRA’s 7 km Tunnel Now Complete
2013.12.15 KAGRA’s Y-arm tunnel now complete