Detect ctor Charact cterization fo for the underground gr - - PowerPoint PPT Presentation

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Detect ctor Charact cterization fo for the underground gr - - PowerPoint PPT Presentation

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Detect ctor Charact cterization fo for the underground gr gravitational-wave detect ctor, KAGRA Keiko Kokeyama, Takahiro Yamamoto, Taka-aki Yokozawa, Chihiro Kozakai, Yuta Fujikawa, Shoichi Oshino, Tatsuki Washimi, Alex Urban, Siddharth

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Detect ctor Charact cterization fo for the underground gr gravitational-wave detect ctor, KAGRA

Keiko Kokeyama, Takahiro Yamamoto, Taka-aki Yokozawa, Chihiro Kozakai, Yuta Fujikawa, Shoichi Oshino, Tatsuki Washimi, Alex Urban, Siddharth Soni, and Duncan MacLeod (on behalf of the KAGRA collaboration)

@ TAUP2019, September 10th, 2019

Sep/10/2019 JGW-G1910794

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Mot Motivation

  • n

2nd gen Interferometer (ifo) is so complex!

Does this series of h(t) channel have the GW signal?

Our ultimate questions is… But…

Not everyone can easily access to

  • What GPS time to analyze?
  • When was the ifo operating?
  • What channels to see? There are

100,000 aux channels!

  • How to determine the detector

status? Detector Characterization!

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Ho How w to ans answer er thes these e ques questio tions ns?

  • Environmental Monitors (PEM)

weather, earthquake…

  • Study the correlation between

PEM and GW channel data

  • Information from interferometer (ifo) controls
  • Monitoring tools
  • Glitch and line findings
  • Channel information

3 km 3 km ETMY ITMY IMC ETMX BS SR2 SRM OMM OMC PR2 PR3 IMTX PRM IMM IFI PSL SR3

Distinguish the ifo status and data quality by understanding a lot of data and information = Detector Characterization!

  • Subsystem’s status

(cryogenic, vacuum…)

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Recent Progress of Detchar team

With a lot of help from VIRGO and LIGO

For tool info, Kozakai JGW-1910784

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  • Installed tools

§ Summary pages (interferometer status by LIGO) § ligoDV (signal visualization by LIGO) § Omicron (glitch finding by VIRGO) § Omega scan (glitch visualization by LIGO-VIRGO) § Fscan (line noise visualization by LIGO) § Spectrogram plot tool (by Kozakai) § Bruco (Correlation search by VIRGO)

§ Generating the data quality information

(by Yamamoto)

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  • Installed tools

§ Summary pages (interferometer status by LIGO) § ligoDV (signal visualization by LIGO) § Omicron (glitch finding by VIRGO) § Omega scan (glitch visualization by LIGO-VIRGO) § Fscan (line noise visualization by LIGO) § Spectrogram plot tool (by Kozakai) § Bruco (Correlation search by VIRGO)

§ Generating the data quality information

(by Yamamoto)

Recent Progress of Detchar team

With a lot of help from VIRGO and LIGO

For tool info, Kozakai JGW-1910784

  • D. MacLeod
  • A. Urban
  • S. Soni

Sep/10/2019 JGW-G1910794 4

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Summary Pages

  • Python software
  • Easy access with web browser
  • Show Interferometer status and summary
  • h(t) and BNS Sensitivity
  • Developed by Duncan MacLeod
  • Installed in the KAGRA site

Spectrum of h(t) Timeseries of ifo states Spectrogram of h(t)

Sep/10/2019 JGW-G1910794 5

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Engineering Run Summary

Engineering Run was done with intermediate ifo configurations so far

  • June 8 (X arm) for 6 hours
  • July 13 (Michelson ifo) for 6 hours

The purpose is to check the interferometer (ifo) end to end

  • Interferometer and related hardware
  • Detchar software
  • Calibrations
  • Deta analysis pipelines

Run summary was created using Summary Pages

  • Summary of the Guardian states
  • Guardian is an automatic control system (“State machine”)

by J. Rollins

  • Many different ifo process towards operation are

automatically controlled by Guardian

  • Each process is recorded in the GRD channels

Sep/10/2019 JGW-G1910794 6

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Engineering Run Summary

Yokozawa, JGW-G1910474 Duty cycle 95.5%! Operation In process of operation Histogram of ifo states Timeseries of ifo states Pie chart of ifo states

PMC unlock (upstream trouble) Data acquisition trouble Suspension trouble (PR2)

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Daily Summary Example 1

VIS (suspension) page

  • C. Kozakai

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Daily Summary Example 2

Physical environmental monitor page => Seismometer No earth quake…

  • T. Yokozawa

PEM team

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Nightly Summary

  • C. Kozakai

Typical spectrum as reference Spectrum of last night

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By automatically run to create this page during night commissioners can understand the suspension status at a glance when they come in (saving time to compute low frequencies during the work time)

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Glitch Summary

  • Detchar must be able to say if glitches in h(t) are

due to external disturbances or not

  • Share information with data analysis pipelines
  • Omicron was applied on the already-commissioned subsystems
  • Lock loss study using this page. See, Kokeyama, JGW-G1809258
  • F. Robinet
  • T. Yamamoto
  • C. Kozakai

Sep/10/2019 JGW-G1910794 11

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SLIDE 13

Line Visualization

  • S. Oshino

Sep/10/2019 JGW-G1910794 12

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Our Next Steps

  • The top page is waiting for h(t)!
  • More improvements for subsystem pages

(adding more pages and channels)

  • Make more stable (removing expired channels)
  • After sharing auxiliary channels, join the LIGO-

VIRGO network page

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