|
⇤ ← Revision 1 as of 2018-10-15 21:35:47
Size: 1734
Comment:
|
Size: 1696
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 4: | Line 4: |
| Kokeyama, Sato, Uehara, Ge, Nakano, Nagano, Aso | |
| Line 14: | Line 14: |
| * IMC - ASC: MEDM and models were modified for the DC centering control. Currently there are two ways to control; dof1~3 - WFS individual mirror, or dof4 - I&O. Waiting for the PZT mounts for the DC control. PSL PZT position is with random offsets voltage. PZT voltage to change to the mid range of the actuator. * MZM - 1st PZT was broken, and new one was installed. Alignement is still bad. Another new bigger PZT for the 1st MZI. 1st MZI, check the IMC alignment carefully. Control scheme for both MZIs should work well now if we have enough range with the new PZT. Power fluctuation still there, but not seen on the measurement day (klog). Maybe related to the PMC temperature loop?? * PLS - PMC:temperature loop was added, working well. The thin film polarizer pair will be installed on next Monday. Power will go up to 5W this week. |
* 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. |
| Line 19: | Line 18: |
| * HPL - Heat sinks with coating arrived. Some parts were lost when delivery...LightTools are ready. | * HPL - Heat sinks with coating arrived and to be installed. HP dump review will be done after this meeting. |
| Line 22: | Line 21: |
| * MC mirrors will clean with the first contacts before December HP. | * MCI and MCO mirrors will clean with the first contacts before December HP. |
| Line 25: | Line 24: |
| * Ge is preparing the visa for the next visit | |
| Line 31: | Line 30: |
| * Koji Arai will come on the week of 29th. | |
| Line 33: | Line 33: |
| * 31st Wednesday |
Regular Meeting 1016
Participants
Kokeyama, Sato, Uehara, Ge, Nakano, Nagano, Aso
Announcement
- Always Laser Hazard
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: 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.
Visitors
- Ge is preparing the visa for the next visit
Absence
- Nakano-kun Oct 19th Fri, 22nd Mon
- Kokeyama will work on Detchar in the week of Oct 15th from Mozumi (no mine entrance)
- Kokeyama out for LLO from Nov 6 - Nov 22
- Koji Arai will come on the week of 29th.
Next meeting
- 31st Wednesday