2017/2/6(Tue.)
- Remote participants by eZuce: Takahashi
- Report of work (*:responsible person)
- Alignment and Vibration Isolation: Izumi, Okutomi
- BF yaw transfer function showed that it did not move well. It was fount that the position of IP was different from when pumping down started.
- IP drifted 2mm in the air, and another 2mm when pump down. (Takahashi)
- ETMY IPs were set back to where they were on 1/13. The transfer function now has the similar shape as before, but the Q of lowest peak is a bit low.
- Alignment and Vibration Isolation: Izumi, Okutomi
- Work plan (*:responsible person)
- Alignment and Vibration Isolation: *Izumi
- We can move moving masses of BF, or IPs of yaw to check TF can be recovered.
- We will play one more day under vacuum.
- Type A: *Yokozawa
- RT model of Type A will be separated into cryopayload and tower.
- Type B
- SR assembly continues.
- Alignment and Vibration Isolation: *Izumi
- Laser hazard: PSL. Green might be used late of the afternoon, then the center area and Y end will be the hazard area.
- Weekly
- Week of 2/5
- Finding causes of ETMY trouble.
- Vent 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
- IP drifted 2mm in the air, and another 2mm when pump down.