• KAGRA
• Commissioning
• DailyWork
• 2018-02-02

2017/2/2(Fri.)

• Remote participants by eZuce: Shinji Miyoki
• Report of work (*:responsible person)
  • Vibration Isolation,
    • Blade inspection on BS was performed. Seemingly all fine.
    • Zeroed the optical lever before opening up the lid.
    • ETMY BF LVDT V2 didn't seem to respond. Need to check.
  • Vacuum: Izumi, Hayakwa
    • Re-opened the EYA gate valve.
  • Alignment: Izumi
    • The ETMY mirror showed a strange scattering pattern.
    • Two baffle PDs, out of four, were healthy. Perhaps the interferometer beam is not able to reach the rest of two by some unknown object occulting it. Anyway, we are ready for cooling test.
• IOO: Kokeyama, Tahara,
  • PMC aligned, resulting in TEM00 flush.
• Wide angle baffle: Miyo, Hasegawa, Akutsu,
  • Hardware in chamber is done. In the process of connecting and checking out the electronics outside together with the digital system.
• Work plan (*:responsible person)
  • IOO: *Kokeyama, Tahara
    • PMC work continues.
  • Alignment: *Izumi,
    • ETMY BF check-out from the control room.
    • Restarting the BS realtime model.
  • WAB: *Miyo,
    • Mostly activities from the control room
  • IYA Tcam: *Yokozawa, Shishido,
    • Building the hardware at the floor.
  • Type B
    • SR assembly continues.
• Laser hazard: PSL. At some in this evening, it will be the are over the SR line for double-checking the IMC alignment. Kokeyama is responsible for it.
• Weekly
  • Week of 1/29
    • 1/31-2/2 Re-checking main beam to ETMY
  • Week of 2/5
    • 2/5 Cooling start.
• Issues
  • EYA gate valve leaks. Urgency is minor.
  • ETMY BF may be touching?