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Size: 1378
Comment:
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Size: 2775
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
| Line 5: | Line 5: |
| * A01: Cable check * * A02 Porality Check * |
* A01: Cable check -> accept * 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 * A02 Porality Check -> accept * Magnet gluing * https://klog.icrr.u-tokyo.ac.jp/osl/?r=28831 * According to Ushiba-kun's picture, they show that all the poraries are correct -> accept |
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| * | * judge by the transfer functions |
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| * A06: Height Measurement * |
* A06: Height Measurement -> accept * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29064 |
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| * A09: Spectrum(spectra of IM/MN photosensors.) * * A10: Transfer Function * * Oplev Check (Yokozawa, Akutsu) * * Green flash at REFL and Trans PD * * X-Pcal homeworks * |
* A09: Spectrum(spectra of IM/MN photosensors.) -> accept * 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 -> accept * Transsfer function : https://klog.icrr.u-tokyo.ac.jp/osl/?r=29138 * F0 is close to the edge, so the gain is high. -> accept * F1 is within the range enough, we have no explanation for why the gain is so high. The reason for the dip of 8Hz depends on coupling, the earthquake might change the coupling. 1.6Hz peak showed in the new data, but we do not know why. However, no control is applied, so -> accept * EQ stop: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29087 -> accept * Oplev Check (Yokozawa, Akutsu) -> accept * path check: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29098 * Green flash at REFL and Trans PD : https://klog.icrr.u-tokyo.ac.jp/osl/?r=29135 * Flash was seen -> accept |
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| *Windows Cleaning * |
*Windows Cleaning -> accept * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29128 |
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* TMSX optical system (Akutsu and his selected persons) |
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| * | * NAB: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28998 -> accept * WAB: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28984 -> accept ------- * There were some discussions written in each item, but all items were accepted. ------- |
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| * tie rod adjustment between EXC and TMSX to avoid stress when the only EXC side is pumped down. | |
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| * The broken cc-10 was replaced. * N2 purge is necessary for EXV. |
* N2 purge is necessary for IYV. |
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| * Connector change is required for the heat link suspensions. |
IYC Recovery(20240407)
- Suspension health check (Takahashi, Ushiba)
A01: Cable check -> accept
- Re-cabling of BF damper
A02 Porality Check -> accept
- Magnet gluing
According to Ushiba-kun's picture, they show that all the poraries are correct -> accept
- A03 Rubbing Check
- judge by the transfer functions
- A04: Range and Calibration
- A05: Watchdog Setting: Skip
A06: Height Measurement -> accept
A08: Calibration:skip
A09: Spectrum(spectra of IM/MN photosensors.) -> accept
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 -> accept
Transsfer function : https://klog.icrr.u-tokyo.ac.jp/osl/?r=29138
F0 is close to the edge, so the gain is high. -> accept
F1 is within the range enough, we have no explanation for why the gain is so high. The reason for the dip of 8Hz depends on coupling, the earthquake might change the coupling. 1.6Hz peak showed in the new data, but we do not know why. However, no control is applied, so -> accept
EQ stop: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29087 -> accept
Oplev Check (Yokozawa, Akutsu) -> accept
path check: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29098
Green flash at REFL and Trans PD : https://klog.icrr.u-tokyo.ac.jp/osl/?r=29135
Flash was seen -> accept
Windows Cleaning -> accept
Tcam (Yokozawa and ChenDan, and Yamamoto)
- Baffle PDs (Yokozawa and his selected persons):
- NAB, WAB (Akutsu)
NAB: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28998 -> accept
WAB: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28984 -> accept
- There were some discussions written in each item, but all items were accepted.
- 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.