Prof.
Masatake Ohashi
(ICRR)
9/9/19, 2:00 PM
Gravitational waves
Oral presentation in parallel session
KAGRA, laser interferometer with arm-length 3km, aims at detecting gravitational waves and developing gravitational wave astronomy. KAGRA has two features, the underground site and the cryogenic mirrors. In April 2019, most of the installation activities for KAGRA had been completed. After about a half of year commissioning work, KAGRA will join the international gravitational wave observation...
Prof.
Nobuhiro KIMURA
(ICRR)
9/9/19, 2:15 PM
Gravitational waves
Oral presentation in parallel session
Large-scale cryogenic gravitational wave telescope in Japan, KAGRA, an interferometer having 3 km in length of arms to detect gravitational waves.
The notable features of KAGRA are four main mirrors of the interferometer are cooled down below 20 K in order to reduce thermal noise, and installed underground in a mine to isolate it from seismic activities on the ground.
A cryo-payload...
Dr
Koki Okutomi
(ICRR, University of Tokyo)
9/9/19, 2:30 PM
Gravitational waves
Oral presentation in parallel session
KAGRA is a laser interferometric gravitational wave telescope constructed in an underground site in Japan. Gravitational wave events of more than ten from compact binary coalescences have been observed by LIGO and Virgo that brought us observational evidences about astrophysics in strong gravity. Participation of KAGRA in the gravitational wave detector network can improve accuracy of the...
Dr
Masayuki Nakano
(Toyama Univ.)
9/9/19, 2:45 PM
Gravitational waves
Oral presentation in parallel session
KAGRA is a gravitational wave (GW) detector under construction in Japan. The world-wide gravitational detector network started the third observation run (O3) in April 2019, and KAGRA construction is proceeding to join O3 as soon as possible.
An interferometric GW detector, such as KAGRA, observes GWs by measuring the distance fluctuation between two free-masses. To measure this distance...
Mr
Koseki Miyo
(Institute for Cosmic Ray Research, University of Tokyo)
9/9/19, 3:00 PM
Gravitational waves
Oral presentation in parallel session
KAGRA is a large scale laser interferometric gravitational wave (GW) telescope constructed in an underground in Japan. Comparing to GW telescopes on the ground surface, the underground telescopes such as KAGRA and the planned Einstein Telescope have an advantage of substantially reduced seismic noise above 1 Hz.
However, even in underground, seismic motions at low frequencies such as the...
Dr
Takahiro Yamamoto
(ICRR, The University of Tokyo)
9/9/19, 3:15 PM
Gravitational waves
Oral presentation in parallel session
Advanced LIGO and advanced Virgo started the 3rd observing (O3) run from April 2019. KAGRA will join O3 run from the end of 2019. We completed the construction of KAGRA and now conduct the commissioning test.
The interferometer control system and the DAQ system was also constructed. KAGRA provides more than 100,000 channels and stored data rate reaches more than 10MB/s. These data is...
