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Size: 1378
Comment:
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Size: 2284
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
| Line 6: | Line 6: |
| * | * Re-cabling of BF damper * https://klog.icrr.u-tokyo.ac.jp/osl/?r=28993 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29177 |
| Line 8: | Line 10: |
| * | * Magnet gluing * https://klog.icrr.u-tokyo.ac.jp/osl/?r=28831 |
| Line 10: | Line 13: |
| * | * judge by the transfer functions |
| Line 15: | Line 18: |
| * | * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29064 |
| Line 18: | Line 21: |
| * | * ITMY IM/MN photosensors: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29140 * ITMY tower sensor: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29141 * Moving peaks exist, but amplitudes are not so high and frequency is far from controls. -> accept * 2nd and 3rd graph shows it can be removed when evacuated. -> accept, we should check it after the pump down. |
| Line 20: | Line 26: |
| * | * Transsfer function : https://klog.icrr.u-tokyo.ac.jp/osl/?r=29138 * EQ stop: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29087 * F0 is close to edge, so gain is high. -> accept * F1 is within the range enough, we have no explanation why gain is so high. The reason of dip of 8Hz depends on coupling, earthquake might change the coupling. -> accept??? |
| Line 22: | Line 31: |
| * | * path check: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29098 |
| Line 25: | Line 34: |
| * X-Pcal homeworks * |
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| Line 29: | Line 36: |
| * | * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29128 |
| Line 33: | Line 40: |
* TMSX optical system (Akutsu and his selected persons) |
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| Line 40: | Line 45: |
| * | * NAB: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28998 * WAB: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28984 |
| Line 43: | Line 49: |
| * tie rod adjustment between EXC and TMSX to avoid stress when the only EXC side is pumped down. | |
| Line 47: | Line 52: |
| * The broken cc-10 was replaced. * N2 purge is necessary for EXV. |
* N2 purge is necessary for IYV. |
| Line 52: | Line 56: |
| * Connector change is required for the heat link suspensions. |
IYC Recovery(20240407)
- Suspension health check (Takahashi, Ushiba)
- A01: Cable check
- Re-cabling of BF damper
- A02 Porality Check
- Magnet gluing
- A03 Rubbing Check
- judge by the transfer functions
- A04: Range and Calibration
- A05: Watchdog Setting: Skip
- A06: Height Measurement
A08: Calibration:skip
- A09: Spectrum(spectra of IM/MN photosensors.)
ITMY IM/MN photosensors: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29140
ITMY tower sensor: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29141
Moving peaks exist, but amplitudes are not so high and frequency is far from controls. -> accept
2nd and 3rd graph shows it can be removed when evacuated. -> accept, we should check it after the pump down.
- A10: Transfer Function
Transsfer function : https://klog.icrr.u-tokyo.ac.jp/osl/?r=29138
EQ stop: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29087
F0 is close to edge, so gain is high. -> accept
F1 is within the range enough, we have no explanation why gain is so high. The reason of dip of 8Hz depends on coupling, earthquake might change the coupling. -> accept???
- A01: Cable check
- Oplev Check (Yokozawa, Akutsu)
path check: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29098
- Green flash at REFL and Trans PD
- Windows Cleaning
Tcam (Yokozawa and ChenDan, and Yamamoto)
- Baffle PDs (Yokozawa and his selected persons):
- NAB, WAB (Akutsu)
- Vacuum system (Kimura-san / Uchiyama-kun and their selected persons)
- Nasty air parts were replaced.
- Vacuum alert recovery after pumping down.
- GV interlock will be tried after pumping down.
- N2 purge is necessary for IYV.
- Cryo-system (Kimura-san and his selected persons)
- All temp signals are obtained?
- Cryocon alert to slack after cooling.
- No interlock for TMP around the Cryostat.