|
Size: 1427
Comment:
|
Size: 3396
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 2: | Line 2: |
| 2020/3/6 14:00 - | 2020/3/6 14:00 - |
| Line 6: | Line 6: |
| Participants: | Participants: |
| Line 20: | Line 20: |
| * Just curiosity (YF): Do we have any chances to try to implement feed-forwarding at IP-stage in the commissioning break? * If we have a time period that no one uses the interferometer, maybe I feel I would like to try. |
|
| Line 22: | Line 26: |
| * I uploaded a document in the JGWDoc website describing the intended work for Type-B suspensions in 2020: [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11534|JGW-E2011534]]. The motivation was just to have source of clear information of what we have to do. It doesn't have to be limited to Type-B. * Limits switches for F0 yaw stepper motor: * Last week there was an uncertainty as to how we connected the exisitng F0 yaw stepper motors in SR suspensions; there was a discrepancy between the cabling diagram and what I remembered. * We checked the documentation and we remembered Hirata-san improvised 50 cm cable assemblies with 1.5 mm plugs (Burndy) in one end and a male D-sub in the other, then we used a 2.5 m extension cable with female connectors in both ends to reach the flange (Type 2-2.5). Only four threads were connected. * For the work this year we will need, for Type-B only, '''4 × 50 cm cable assemblies with eight 1.5 mm plugs (Burndy) in one and a male D-Sub connector in the other'''; additionally, we will require '''1 ''''''× 2.5 m extension cable with female connectors in both ends for the BS''', which doesn't have the yaw stepper motor. * Limit switches for SR IPs: it seems all the harware is connected and all we need to do is just to learn how to use them in software; '''is this statement correct?''' * What's the status of the oplev boxes? * Was there a problem with SR2 real-time model? I heard in the morning briefing today this was solved by Aso-san. |
|
| Line 35: | Line 48: |
| * Status of ACC development (Takahashi). | * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11533|Status of ACC development (Takahashi)]] * just curiosity (YF): Should we calculate the required sensor noise level beforehand for the purpose of blending? |
Agenda/Minutes of the VIS Meeting on 2020/3/6
2020/3/6 14:00 -
Participants:
Progress report
Type-A
Past week report
Plan for coming weeks
- Just curiosity (YF): Do we have any chances to try to implement feed-forwarding at IP-stage in the commissioning break?
- If we have a time period that no one uses the interferometer, maybe I feel I would like to try.
Type B
Past week report
I uploaded a document in the JGWDoc website describing the intended work for Type-B suspensions in 2020: JGW-E2011534. The motivation was just to have source of clear information of what we have to do. It doesn't have to be limited to Type-B.
- Limits switches for F0 yaw stepper motor:
- Last week there was an uncertainty as to how we connected the exisitng F0 yaw stepper motors in SR suspensions; there was a discrepancy between the cabling diagram and what I remembered.
- We checked the documentation and we remembered Hirata-san improvised 50 cm cable assemblies with 1.5 mm plugs (Burndy) in one end and a male D-sub in the other, then we used a 2.5 m extension cable with female connectors in both ends to reach the flange (Type 2-2.5). Only four threads were connected.
For the work this year we will need, for Type-B only, 4 × 50 cm cable assemblies with eight 1.5 mm plugs (Burndy) in one and a male D-Sub connector in the other; additionally, we will require 1 × 2.5 m extension cable with female connectors in both ends for the BS, which doesn't have the yaw stepper motor.
Limit switches for SR IPs: it seems all the harware is connected and all we need to do is just to learn how to use them in software; is this statement correct?
- What's the status of the oplev boxes?
- Was there a problem with SR2 real-time model? I heard in the morning briefing today this was solved by Aso-san.
Plan for coming weeks
Type-Bp
Past week report
Plan for coming weeks
OMMT & OSTM
Past week report
Plan for coming weeks
VIS electronics
Past week report
Plan for coming weeks
Other site works
Safety
Discussion
Status of ACC development (Takahashi)
- just curiosity (YF): Should we calculate the required sensor noise level beforehand for the purpose of blending?
Travel Plans
- Travel (Week of 3/9):
- Takahashi:
- Sato:
- Hirata:
- Shoda:
- Fujii:
- Tanaka:
- Travel (Week of 3/16):
- Takahashi: 16-18
- Sato:
- Hirata:
- Shoda:
- Fujii:
- Tanaka:
Next meeting
On 2020/3/13(Fri)