• KAGRA
• Subgroups
• DET
• Meeting
• 230510

Status of the KAGRA commissioning 230510

• Status
  • Sensitivity 1.2 -1.4 Mpc
  • From the results of CAL/DET day at 4/26, calibration is consistent with previous measurement
• Effect of earthquake at Noto peninsula
  • 5th May : Magnitude 6.7 at Noto peninsula
  • Several earthquakes are still happened
  • Interferometer is already recovered
    • Re-alignment at PSL room will be performed today
• Commissioning work
  • Alignment sensing and controls
    • We need the PR3 global control to keep the stable opleration
      • Trial is ongoing
      • If trial is not succeeded until the O4a, we will sometimes perform manual alignment
    • OMC alignment control problem
      • Fixing is ongoing
      • If trial is not succeeded until the O4a, we will sometimes perform manual trouble shooting
  • Tapping test and shaker injection
    • We performed the tapping test(Vibration injection test by hand) at 4/25 and 4/29

    • Result(JGWDoc14941)

    • OMC chamber is most sensitive part, we performed the shaker injection test
      • Analysis is ongoing
  • Increasing the laser power
    • Toward the stable operation is higher priority, so if possible we will try to increase the laser power
  • Glitch investigation
    • ETMY oplev glitch
      • Solved by install the temperature control system
    • ITMY suspension glitch
      • Try to install the IR/GR filter in front of oplev QPD
    • IPC glitch

      • It sometimes happened that the time series sometimes jump during observation example(klog24930)

      • Trial of slim down the real time model
      • Trial the glitch reason by Sawada-san
    • 37 Hz glitch

      • It detected in OMC signal klog25106

      • 37 Hz and its harmonics frequency excited
      • Seeing in hveto analysis(?)
      • The reason is not understand yet
  • Lock loss investigation
    • Ongoing