2018/4/27(Fri.)
* Remote participants by eZuce: None
Report of work (*:responsible person)
- IFO: *Izumi, Enomoto + many
- Michelson lock lasted longer than 2 and half hours!
- Alignment control from IFO to ETMX was implemented by dithering ETMX.
- RT models for PR2 and PR3 were down sampled from 16kHz to 2kHz. (Ushiba)
- PR3 alignment was implemented by baffle signal.
- ETMX damping might be a cause of lock lost.
- ETMY yaw damping inclease pitch motion by coupling. It will be improved today.(Ushiba)
- BS oplev is fed back to not only TM but also IM. (Arai)
- WAB: *Akutsu
- Heat consumption is estimated well. 10ppm produce 4W and it will be absorbed by WAB and now it is simulated by heater.
- Equilibrium temperature was 21K.
- Damping became to strong in low temperature.
- SR: *Mark, Enzo, Tanioka, Kozu
- Wire of RM was broken on SR3 during tightening clamp. There was no damage.
- CAL: *Yamamoto
- Line injection is being tested.
- UGF serve will not be implemented, so change of optical gain is compensated in off line.
- Operaton:
Operation wiki page is opened.
- Operation schedule and emergency contact list is put on the white board in the control room.
Work plan (*:responsible person)
- IFO: *Izumi, Enomoto, Nakano + many
- Measurement without locking morning, measurement with locking in the afternoon.
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 4/23
- Michelson control.
- 4/28 Operation start