Weekly PEM meeting
- 2020/02/28(Fri) 16:00-(JST)
- Regular meeting meeting (Japanese)
Web meeting with Zoom2 (Zoom2)
Agenda
General issue
- Interferometer status
- Observation run started without O3 joint observation
- Average ~250kpc BNS detection range
- Lock duration is 1h -4h
- Alignment dependence
- 3/10 - commissioning break(?)
- Maintenance day (2020/03/03)
- I asked SEO about following works
- If you have more request, please let me or Washimi-san know first.
- 1. (Highest priority from PEM team)
- Go inside the mine and move the PEMs placed at OMC legs to next noise target.
- Next target is under discussion(Candidate is IXC area).
- Change the position of the speaker to around POP area
- We don’t need the interferometer during this work.
- 1 hour work.
- Yokozawa, Washimi
- 2. (If possible)
- Go inside the mine.
- Turned on the all FFUs(~5min) to evaluate the noise from FFUs.
- If we can observe the noise from FFUs in the sensitivity curve, we can consider next target.
- If we cannot observe the noise, current noise limit may not come from the sound inside the clean area.
- We need the interferometer during this work.
- 10min work
- Yokozawa, Washimi
- 3. (If possible)
- Go inside the mine
- Hammering test to the cryochambers and ducts and so on to investigate the vibration effects.
- We need the interferometer during this work.
- Also, the hammering test PR and IMC area is essential
- PEM tasks during observation run
- PEM injection
- Shaker and Acoustic injection
- PSL, REFL and AS table injection again
- Saturday afternoon(2/29) between the lock loss and observing state
- Shaker and Acoustic injection
- Hammering test
Hammering test @ Y-end : around 2/15 (JGW-G2011419)
- Discussion about the PEM flags
- Turning off the instruments was completed
- Check the sensitivity when we turned on the FFU
- Microphone spectrum comparison
- Set portable PEMs to the some point for the O3 run
- Yend chamber?
- Around OMC, AS table?
- PEM injection
- Conference
- Application of the author list
- [kagra 03345] from Somiya-san e-mail
- Deadline : 29th Feb.
- エフォート率など相談がありましたら横澤までご連絡ください。
- PEM meeting
- Tuesday may be a maintenance day
- I want to move PEM meeting to Friday and discuss what should we do during maintenance day.
Each progress
- Yokozawa
- What should we do this week
- Tuned off the FFUs and vacuum pumps
- Temperature and GAS drift
- Washimi
SEM updateshttps://www.icrr.u-tokyo.ac.jp/~washimi/KAGRA/SEM/
PEM MAP update https://www.icrr.u-tokyo.ac.jp/~washimi/KAGRA/PEM/PEMmap/
- etc