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Size: 1579
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Size: 1826
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| Deletions are marked like this. | Additions are marked like this. |
| Line 4: | Line 4: |
| Kokeyama, Sato, Nakano, TTanaka, Yamakoh | |
| Line 7: | Line 8: |
| * Wednesday is now the DGS maintainance | * Wednesday is now the DGS maintenance |
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| * IMC - ASC: PZT mirrors for centering QPDs were installed. PZT efficiencies were measured. PZT1 loop was closed. PZT2 yaw efficiency is 10 times lower. * MZM - PZTs were replaced for both 1 and 2nd MZIs. Two PZTs for each MZI. Guardian is operational for the 1st MZI. Guardian on the 2nd MZI works, but not fully yet. The OLTs were measured. Both displacements were measured. Calibration on going? * PLS - PMC: temperature loop has gone crazy and MN is working on. Guardian have to have it. The thin film polarizer pair was installed. Power will go up to 5W. RefCav: DC offset cable to AOM was something wrong, to be replaced. * RAM - no progress * HPL - Heat sinks with coating arrived and to be installed. HP dump review will be done after this meeting. * PEM - Fujikawa-kun will hunt the MZM noise. * IMMT1/IMMT2 - to measure TFs in vac. * MCI and MCO mirrors will clean with the first contacts before December HP. |
* IMC - ASC: one of the DC PZT was efficiency was too low and swapped. DC loop 40Hz UGF. DAC board was changed to have 2 times. * PSL table * all lenses are now high power compatible. * heat sink beam dump will be installed from today. * PMC temperature loop seems to be working now. * power cable (banana) to the AOM driver was broken. * power meters (PDA100) at various positions are installed. One is at the output of the fiber laser output (pickoff). One is the calibrated PMC trans. The last one is the calibrated IMC input. * IMC MM was improved (TRANS/REFL ratio is 95%). * Loss may be 15-20% from the fiber laser out to MC TRANS * Tried 10W for 10 mins. 10W operation has 40Hz harmonics. 20W operation may be advantageous. * MZM * MZM is completely automated. * Tried to measure the mod index to measure at the PM mon * 80MHz signal is appearing around through the table and grounds?? * Maybe a rack in the front room of the PSL? * OMC installation has started. * OMMTs installations have started |
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| * Nakano-kun * Kokeyama * Yamakoh |
* Nakano-kun: Nov 1-2 * Kokeyama: Nov 5- * Yamakoh plan: consult with Miyakawa-san |
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| Nov 12, 10am |
Regular Meeting 1016
Participants
Kokeyama, Sato, Nakano, TTanaka, Yamakoh
Announcement
- JPS meeting submission started
- Wednesday is now the DGS maintenance
- Summary Pages has started
Schedule for Phase-2
Chart https://docs.google.com/spreadsheets/d/19xC6L0TJmjMtuSEoGe7Z7SVVK78MD4S52m0Hm0C5IKw/edit
Punchlist https://docs.google.com/spreadsheets/d/1hHhXEqC5DwITUqYFjVgB-ZnAb53V1C4OlaeYNqjblCI/edit#gid=0
Report from the Last 2 weeks
- IMC - ASC: one of the DC PZT was efficiency was too low and swapped. DC loop 40Hz UGF. DAC board was changed to have 2 times.
- PSL table
- all lenses are now high power compatible.
- heat sink beam dump will be installed from today.
- PMC temperature loop seems to be working now.
- power cable (banana) to the AOM driver was broken.
- power meters (PDA100) at various positions are installed. One is at the output of the fiber laser output (pickoff). One is the calibrated PMC trans. The last one is the calibrated IMC input.
- IMC MM was improved (TRANS/REFL ratio is 95%).
- Loss may be 15-20% from the fiber laser out to MC TRANS
- Tried 10W for 10 mins. 10W operation has 40Hz harmonics. 20W operation may be advantageous.
- MZM
- MZM is completely automated.
- Tried to measure the mod index to measure at the PM mon
- 80MHz signal is appearing around through the table and grounds??
- Maybe a rack in the front room of the PSL?
- OMC installation has started.
- OMMTs installations have started
Visitors
- Ge is preparing the visa for the next visit, starting in December
- Koji Arai is here!
Absence
- Nakano-kun: Nov 1-2
- Kokeyama: Nov 5-
- Yamakoh plan: consult with Miyakawa-san
Next meeting
Nov 12, 10am