Introduction & Status

Hisaaki Shinkai

on behalf of KAGRA collaboration

Chair, KAGRA Scientific Congress
Osaka Institute of Technology

2018-06-29 at KAGRA International Workshop at Seoul, Korea

1Kamioka Gravitational Observatory
former name LCGT = large cryogenic gravitational telescope

3km Laser Interferometer, Cryogenic
1000m under thesummit of the Mt.

Mozumicontrol office.
(15 min)Toyama City
(60 min)

358m above thesea level.

http://gwcenter.icrr.u-tokyo.ac.jp/en/

2018-06-29 at KAGRA International Workshop at Seoul, Korea

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KAGRA collaboration: as of June 2018
385 collaborators(8 B students, 73 M students, 35 D students, 10 PDs)
90 institutes
15 countries(Australia 5, China 35, France 1, German 1, India 3, Italy 17, Japan 253,Korea 23, The Netherlands 1, Poland 2, Russia 1, Taiwan 34, UK 2, USA 10, Vietnam 2)

PI: Takaaki Kajita

Face-to-Face meetingat Osaka City Univ.
May 2018 ⇨Schedule (2) (Construction and Operation)
Already one year has passed after theiKAGARrun.
slidefrom Kajita
2010 2011 20102012 20112013 20122014 20132015 20142016 20152017 20162018 2019 2020

Calendar year
Project start
Tunnel excavation
iKAGRAoperation

Adv. vibration isolation, optics, …

bKAGRAphase 2, 3, 4

Cryogenic system
operationphase 1
Cryogenicmirrors

iKAGRAbKAGRA(*) The configurationin 2019 is still to be
decided referring themilestones.

baseline KAGRA
3• Phase-1 operation (Apr 28 ̶ May 6) ﬁnished• Phase-2 starts on May 7.
4

bKAGRA phase-1 operation (Apr 28 - May 6, 2018)• All vacuum• Cooled ETMY (18K for 30 days).
• Duty cycle (88.6% ﬁrst 5 days; 26.8% May 3 & 4;
59.8% May 5 &6)• Longest lock was >10 hrs• Sensitivity 2x10^{-17} / rHz• PEM injection, hardware injection tests

2018-06-29 at KAGRA International Workshop at Seoul, Korea

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LIGO/Virgo joint observation plans“Scenario Paper”

Living Rev Relativ (2018) 21:3
https://doi.org/10.1007/s41114-018-0012-9

GW150914

BHBH@440Mpc

GW151226

BHBH@440Mpc
10-30
Mpc?

GW170104

BHBH@880Mpc

GW170608

BHBH@340Mpc

GW170814
GW170814
BHBH@540Mpc
GW170817

today“We try to catch up with O3”

NSNS@40Mpc

2018-06-29 at KAGRA International Workshop at Seoul, Korea

6Roadmap of bKAGRA phase2 &3, Join LIGO/Virgo O3 runtime limited, we have to compromise

2018
JulyAug

Sep

2019

Oct

Nov

Dec

JanFebMarAprMayJunJul2020
AugSep

Oct

Nov

Dec

JanFeb

LIGO/VIRGO Observation 3
ITMX

X-armcom.

Xend

FPMI

post com.
ETMX

ETMY

Y-armcom.

ITMY

FPMI

DRFPMI (RSE)
Laser

mode cleaner

data analysis rehearsal

plan A

postcom.

DRFPMI(RSE)plan B

Data Sharing with KAGRA-LIGO-Virgo̶ either DRFPMI(RSE) (30Mpc, 2019 Oct?) or FPMI (10Mpc, 2019 June?)checking points: Sep/2018, Dec/2018 and Mar/2019

2018-06-29 at KAGRA International Workshop at Seoul, Korea

7Re-organizing KAGRA groups for joint observations

VIRGO

LIGO

KAGRA

Observatory
Observatory
Observatory

KAGRA
Muti-Messenger
Astronomy

Outreacheducation
promotion…

Publication

Detector Science

OpticsSeismic
LasersQuantum
…

LIGO
VIRGO

Joint xxx
Committees

Data Analysis

Burst
CBC
continuous…

talks
articles…

Test GR
Event Rates
Waveforms
EOS
New Sources…

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Introduction & Status✓ Phase-1 test operation finished.
✓ Decided to join O3 of LIGO/Virgo.
✓ Preparing hard & soft, Re-organizing structure.

GW physics and astronomy in 2019 will bewith more precise data, and new phase.

2018-06-29 at KAGRA International Workshop at Seoul, Korea

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