• KAGRA
• Commissioning
• Weekly
• 20190122
• Agenda

2019/1/22 Commissioning meeting topics

• Assignment of staffs for night work

  • https://teamup.com/kswnmta8p18h6u1uab

• Readiness for the X arm commissioning.

  • https://docs.google.com/spreadsheets/d/1S2gyFkyajlbPXMKCrqJV7181YFHUxUgPRB6SXz4z4jI/edit?usp=sharing

Schedule

• beam alignment:
  • 1/7~: Opening IMC Chamber.
    • IMC beam alignment in air: 1/11-14
    • IMC lock recover in vacuum: 1/16
    • IMC to ETMX: 1/17-21
  • BS to ETMY: 1/17-21
    • ITMY to REFL: 1/21-22
    • ITMY to SRM: 1/22-23
    • ITMY to OMC: 1/23-25
    • ITMX to OMC: 1/23-25
  • POS to ETMY(Green laser): 1/23-24
    • ETMY to POS(Green laser): 1/24-25

  • 1/27: end of alignment up to SRs

  • 2/18-20 EXC door close
    • ETMX to ITMX: 2/21-22
• Yend
  • 1/25-2/22: Yend Pcal finalization
  • 2/25-3/4: Yend WAB
  • 3/8~ : Yend pumpdown 3/8~
    • 3/11,12: leak test
• Xend
  • 2/22-3/10: Xend Pcal finalization
  • 2/11-2/22: Xend NAB installation
    • Periscope installation
  • 3/11,12 Xend WAB
  • 3/19,20, Heatlink etc.
  • 3/22 Pumping down
    • Leak test
• 3/11~ : Night work start
• 2/4(no delay)-3/8 DRMI commissioning
• 3/11(3weeks delay)-4/5 Y arm commissioning
• 3/25(1week delay)-4/5 FPMI commissioning

Discussion

• X amr commissioning summary
• schedule for Y arm alignment, etc.
• Modulation by Mach-Zehnder

• X commissioning
  • Some noise improvement:

    • http://klog.icrr.u-tokyo.ac.jp/osl/?r=7546: modulation index, whitening

    • http://klog.icrr.u-tokyo.ac.jp/osl/?r=7553: filsters off

    • http://klog.icrr.u-tokyo.ac.jp/osl/?r=7561: PR2

  • http://klog.icrr.u-tokyo.ac.jp/osl/?r=7562: ALS Noise Budget

  • http://klog.icrr.u-tokyo.ac.jp/osl/?r=7571: ALS Noise Budget

  • http://klog.icrr.u-tokyo.ac.jp/osl/?r=7499: Dither Alignment Control

  • http://klog.icrr.u-tokyo.ac.jp/osl/?r=7507: Dither Alignment Control

• VIS

  • http://klog.icrr.u-tokyo.ac.jp/osl/?r=7573: TF of type A

• Laser, PSL, IOO report

  • http://klog.icrr.u-tokyo.ac.jp/osl/?r=7572: MC cavity pole

• AOS

  • http://klog.icrr.u-tokyo.ac.jp/osl/?r=7502: Beam profile measurement on the TMSX table

  • http://klog.icrr.u-tokyo.ac.jp/osl/?r=7574: Beam profile measurement on the TMSX table

• Y arm preparation:

  • http://klog.icrr.u-tokyo.ac.jp/osl/?r=7538: Green beam for Y arm was coupled to the optical fiber

• DGS:

  • http://klog.icrr.u-tokyo.ac.jp/osl/?r=7534: TYPE-A model downsampling