2017/2/5(Mon.)
- Remote participants by eZuce: Takahashi, Aso
- Report of work (*:responsible person)
- Vibration Isolation,
- Restarted the BS realtime model.
- Alignment: Izumi, Okutomi
- ETMY transfer function has a different shape from what was measured before in the air. It means that ETMY might be touching somewhere.
- For vertical, below BF transfer function seems to be OK.
- Yaw might be rotating too much.
- After 1/17, ETMY started showing something strange. Stiffness changed gradually, but Q did not change much.
- ETMY transfer function has a different shape from what was measured before in the air. It means that ETMY might be touching somewhere.
- Vibration Isolation,
- Work plan (*:responsible person)
- Alignment: *Izumi, Okutomi
- We will rotate IP yaw to release somewhere touching. This work takes 1day at least.
- Detchar for spectrum of suspension is necessary as soon as possible.
- Vacuum
- Gate valve will be closed today.
- Needs 2days for evacuation. If once evacuated, cooling will be late ~2weeks.
- Type B
- SR assembly continues.
- Alignment: *Izumi, Okutomi
- 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 2/5
- Finding causes of ETMY trouble.
- Evacuation might be needed if ETMY is touching somewhere.
- Cooling also will be delayed for 2weeks or so.
- Finding causes of ETMY trouble.
- Week of 2/5
- Issues
- The ETMY mirror showed a strange scattering pattern.