2019/7/16(Tue.)
Schedule
- ~7/31: Trial for DRMI with polarization.
- 7/6~: Trial for mass lock
- ITMX
- ETMX
- ITMY
- 7/4: Turbo pump on
- ETMY
- 7/4: Turbo pump on
- Long term:
4/22-5/31: Yarm commissioning
5/27-6/30: DRMI commissioning
- 7/1-8/9: FPMI/DRFPMI commissioning
- 8/12-10/4: ASC
- 10/7-11/15: Post Commissioning
- 11/18-12/13: Noise hunting
Note
Night work
Weekend
Report of work
- OMC: Beam spot on mirror moved. One (or more) of the mirrors seems to be misaligned. OMC will be pulled tomorrow.
- Y arm: 20dB suppression on LSC below 1Hz was seen on mass lock trial.
- Opleve control was slightly changed from IM control to TM control.
- High frequency is limited by noise. Needs high power coil driver modification.
- Type B: H2 on SR3 was noisy, but needs more time to investigate it.
- 80mHz peak was reduced by changing damping setting.
- RTPC for ASC and ALS were dead somehow.
Work plan
Today's work plan: 2019/7/16 1PM - 2019/7/17 1PM
Commissioning leader: Miyakawa (July 16th), Aso (July 17th)
Afternoon
ETMY L2Angle decoupling (Yamada, Nakano)
- Check the schematic of the High Power Coil Driver (Fabian, Terrence)
- Fix the CARM board boost issue (Enomoto)
- Design a filter for DARM (Stefan)
Evening
- Y-arm mass lock trial (SB, EY, MN, et al)
Morning
- DGS maintenance
- Power supply replacement of SR3 (Yamamoto)
- ITM T-cam computer replacement (Yokozawa)
- OMC extraction (Aso, et al)
- Check dimensions around OSTM (Takahashi)
Standing issues
- Y-arm lock
- ETMY suspension control
L2Angle decoupling
- ETMY coil driver range increase
- CARM board boost does not engage
- ETMY suspension control
- DRMI lock stability
- Model HOM-PHD signal distortion (Aso, Kokeyama)
- Search for better Gouy phase in PRC
- Initial alignment automation
- Type-A related
- Add aligned state in Guardian (Kokeyama)
- Type-B related
- SR3 Yaw motion is too large
- Different ground level between the IO chasis and the AA filter box may be the reason
- Replace the DC power supply
- BS IM2TM transfer function measurement
- SR3 Yaw motion is too large
- Type-C related
- Check dimensions around the OSTM
- OSEM characterization for OSTM
- OMC
- Extract OMC
- Check the OMC on the AS table
- Laser safety
- Debug the laser safety guardian