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← Revision 10 as of 2019-05-21 16:46:38 ⇥
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* Yarm COM. Lock by IR, mass feedback 5 week 4/22-5/31 * DRMI Lock 5 week 5/27-6/30 * DRFPMI Lock 6 week 7/1-8/9 * DRFPMI ASC Alignment Sensing Control 8 week 8/12-10/4 * Post Commissioning Tuning PRC, SRC middle baffle 6weeks 10/7-11/15 * Noise hunting Re-lock, noise hunting 4weeks 11/18-12/13 |
* 4/22-5/31: Yarm commissioning * 5/27-6/30: DRMI commissioning * 7/1-8/9: DRFPMI commissioning * 8/12-10/4: DRFPMI ASC * 10/7-11/15: Post Commissioning * 11/18-12/13: Noise hunting |
2019/5/21 15:00-16:00 Weekly commissioning meeting topics
Zoom URL: https://zoom.us/j/6676627462
- Assignment of staffs
Schedule
5/14: RT PC maintenance -> go to safe mode for all VIS connected Dolphin (BS, )
- 5/20-24: Exchanging cryo valves.
- 6/8: Engineering run
- ITMX
- 5/22AM~: tuned off cryostat cooler, finesse measurement for Xarm
- ETMX
5/2: Cooling start
- 5/29: Cooling done
- ITMY
- 5/23AM~: tuned off cryostat cooler, finesse measurement for Yarm
- ETMY
- 5/17~: tuned off ETMY cryostat cooler
- 5/24PM~ inject 100Pa Nitrogen.
- 5/27 evacuation of Nitrogen.
- 6/3-6/14: Installation of TMS for ETMY
- 4/22-5/31: Yarm commissioning
- 5/27-6/30: DRMI commissioning
- 7/1-8/9: DRFPMI commissioning
- 8/12-10/4: DRFPMI ASC
- 10/7-11/15: Post Commissioning
- 11/18-12/13: Noise hunting
Discussion
Low finesse issue on Y arm
- Status as of now
- 2019/5/17(Thu)
- X-arm:
- Finesse = 1399
- Power build-up factor = 891
- Ring-down half-life = 3.11msec
- REFL POWER locked/unlocked = 0.96
- Y-arm:
- Finesse = 28
- Power build-up factor = 18
- Ring-down half-life = 0.42msec
- REFL POWER locked/unlocked = 0.50 (agrees with experiment)
- X-arm:
- 2019/5/17(Thu)
- Finesse of Yarm for green: 17 (design 50)
- 2019/5/17(Fri)
- Finesse of Yarm for IR: 120, ETMY temperature 33K
- 2019/5/19(Sun)
- Finesse of Yarm for IR: 146, ITMY temperature 25K, ETMY temperature 51K
- 2019/5/20(Mon)
- Finesse of Yarm for IR: 131, ITMY temperature 25K, ETMY temperature 60K
- Finesse of Xarm for IR: 1151(probably due to the miscentering), ITMY temperature 29K, ETMY temperature 126K, but alignment at ETMX
- 2019/5/17(Thu)
- Cryo status and plan
- ETMY
- 5/17~: tuned off ETMY cryostat cooler
- 5/24PM~ inject 100Pa Nitrogen to increase temperature. It takes several days close to room temperature ?? degree.
- 5/27 evacuation of Nitrogen.
- ITMY
- 5/23AM~: tuned off cryostat cooler, finesse measurement for Yarm
- ITMX
- 5/22AM~: tuned off cryostat cooler, finesse measurement for Xarm
- ETMY
- Chance for Y arm finesse measurement: 5/21, 5/23 and after 5/29 of evacuation of Nitrogen
- Searching good spot on Yarm