• KAGRA
• Subgroups
• IOO
• Meeting
• Meeting20190603

IOO meeting 2019 0610

Connection

Zoom1: https://zoom.us/j/7631499341

Participants

Nakano, Kokeyama, Sato, Takahashi (Ryu), Nagano, Uehara, Fujikawa, Ge

Announcements

• Nakano was approved as the IOO chief.

Conferences

• KIW6 Wuhan 6/21-23 http://kiw6.csp.escience.cn/dct/page/1

  • IOO status talk by Nakano
  • MZM talk by Guiguo
• August F2F meeting, Toyama, 8/22-24

• TAUP 2019 in Toyama, 9/9-13, http://taup2019.icrr.u-tokyo.ac.jp/

  • Nakano and Kokeyama-san will have a talk, but not about the IOO issue

Recent Status

• Engineering run has been done on 6/8.
  • KOACH and AC operation need to be fixed.
    • will be discussed on the commissioning meeting on 6/11. (Kokeyama-san will summerize it)

  • RefCav might be better to be evacuated again for the temperature drift.

    • Nakano will check the data about the FSS.
  • We saw the alignment drift due to the temperature drift.
    • Short-term ASC would be worthful.
  • IOO manual is missing.

PSL

• Laser POW MON (IMC IN) is fixed and working

  • http://klog.icrr.u-tokyo.ac.jp/osl/?r=8994

• Beam shutter driver is modified and works well in PSL

  • http://klog.icrr.u-tokyo.ac.jp/osl/?r=8993

  • We need to check the spectrum of IMC TRANS, REFL, and an error signal. And more?
• MZM was removed.

  • http://klog.icrr.u-tokyo.ac.jp/osl/?r=8957

• MZM paper is on-going (2nd-draft was circulated)
  • 3rd-draft will be circulated before CPC circulation
  • Izumi-san, Michimura-san, and Yamakoh will have a meeting about it in Tokyo before 3rd-circulation.

IMC

• measured the asc sensmat with the new position of IP1 isn't good.

  • http://klog.icrr.u-tokyo.ac.jp/osl/?r=8982

  • The beam size on each IP need to be the same. We need to re-design.
  • However, still it would be good to implement the short-term IP-ASC. It can compensate for the IP drift.

  • Added on the ToDos for O3

• HPBD thermometer ongoing
  • Miyo-kun is testing the read-out circuit.
  • On Wednesday, we will have a data on the DGS channel.

OMC, OMMT, OSTM

• OSTM replacement is on-going
  • The mirror will be changed to a thicker one. Matteo is negotiating with a company.
  • TAMA-IMC will be used for OSTM suspension, and Takahashi-san is working on it.
  • Replacement is scheduled on September.

Others

• IFI chamber optics meeting on 6/10
• IFO-REFL table power adjustment system needs to be designed. MIF will work on it.

Visitor

• Koyama-kun and Prof Suzuki (Niigata) will visit Kamioka (6/11)
• GG left last week, and come back on end of this month

Next meeting

• The meeting schedule will be changed. Nakano will arrange the new candidate.