2018/4/29(Sun.)
* Remote participants by eZuce: None * 2nd day of Phase 1 operation
- TF of Type A
Report of work (*:responsible person)
- IFO: *Izumi, Enomoto + many
- OLG was measured in the daytime.
- Error of TF of actuator is ~20%.
- 120usec delay exists in the MICH loop.
- BS oplev sensitivity was improved by increasing whitening gain.
- Longest lock of the last night was ~8hour.
- Baffle PD signal is used to BS alignment.
- OLG was measured in the daytime.
- 40Hz periodic noise was seen every 16min. It is air compressor.
- It can be stopped during operation.
- Timing to IY0 will be connected today.
- WAB: Akutsu
- Heater was turned off ~10am.
- IYC: Tomaru
- Cooler was turned off at 4pm and the vacuum level got worse to 1e-3Pa order.
Work plan (*:responsible person)
- TF of Type A
- Some of DOF of ETMY to L.
Laser hazard
- [AM]
- IR: Upstream SR2-3 line, Xend 1F, Yend 1F
- Green: PR2, Xend 1F
- [PM]
- IR: Upstream SR2-3 line, Xend 1F, Yend 1F
- Green: PR2, Xend 1F
- [night]
- IR: Upstream SR2-3 line, Xend 1F, Yend 1F
- Green: PR2, Xend 1F
Weekly
- week of 4/30
- Operation continues.