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Size: 5190
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Size: 5479
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
| Line 7: | Line 7: |
| Participants: | Participants: Takahashi, Sato, Barton, Tapia, Hirata, Kozu, Terrence, Ohishi, Tanioka, Tanaka, Fujii, Okutomi, Shoda, Ishizaki, Tanak(ICRR) |
| Line 104: | Line 104: |
| * Power line replacement is planed on 26th June. | |
| Line 109: | Line 110: |
| * Type-A: * Type-B: |
* Type-A: Crane work. * Type-B: Crane work. |
| Line 117: | Line 118: |
| * Takahashi: * Okutomi: * Sato: |
* Takahashi: 18-22 * Okutomi: 18-22 * Sato: 18-22 |
| Line 121: | Line 122: |
| * Mark: * Hirata: * Enzo: |
* Mark: 18-22 * Hirata: 18-22 * Enzo: 18-22 |
| Line 129: | Line 130: |
| * Kozu (ICRR): | * Kozu (ICRR): 18-22 |
| Line 131: | Line 132: |
| * Terrence: | * Terrence: 18-22 |
| Line 135: | Line 136: |
| * Takahashi: | * Takahashi: 25-29 |
| Line 137: | Line 138: |
| * Sato: | * Sato: 25-29 |
| Line 139: | Line 140: |
| * Mark: * Hirata: * Enzo: |
* Mark: 25-29 * Hirata: 25-29 * Enzo: 25-29 |
| Line 144: | Line 145: |
| * Fujii: | * Fujii: 25-29 |
| Line 147: | Line 148: |
| * Kozu (ICRR): | * Kozu (ICRR): 25-29 |
| Line 149: | Line 150: |
| * Terrence: | * Terrence: 25-29 |
Agenda/Minutes of the VIS Meeting on 2018/6/15
2018/6/15 13:30 -
Participants: Takahashi, Sato, Barton, Tapia, Hirata, Kozu, Terrence, Ohishi, Tanioka, Tanaka, Fujii, Okutomi, Shoda, Ishizaki, Tanak(ICRR)
Progress report
Schedule Chart
Type-A : (PDF/MPP)
Type-B: (PDF/MPP)
Type-A (Takahashi)
Past week report
[Y-front]
- Mounted the BF onto the EQ stop. The DP was suspended from the BF.
- Tuned the BF. Compressed the all five blades. The tuned frequency was 0.24Hz at 198kg.
- Modified the FR for BF. The fixing point of blade was changed. The FR can cover the full range of keystone.
- Calibrated the LVDT for BF.
- Made the short cables for BF damper.
- Assembled the end plate for F3.
- Extended the EQ stop to the F3 stage. Attached the support plate for the BF damper.
- Assembled the FR for F3 with the new blades.
- Assembled the connector plates for F3. Attached them to the cup.
- Cabled for the LVDT-Actuator and the stepping motor for F3.
- Measured the weight of F3. It was 82.9kg.
- Mounted the F3 onto the EQ stop. The BF was suspended from the F3.
- Cabled between the BF and the F3.
- Tuned the F3. The tuned frequency was 0.31Hz with the additional load of 6kg.
- Checked the range of FR for BF. The FR can cover the full range of keystone.
[X-front]
- Set up the analog drivers in the rack.
- Checked the dimension of distance between the beam axis and the cross tube.
Plan for coming weeks
- Calibrate the LVDT for F3.
- Go to the F2 stage.
- Tune the TF in X-front.
Type B (Mark)
Report for week of 6/11
- Mark fixed some channels displaying white on the BS MEDM screens due to issues from splitting the model.
- Enzo redid the SR3 BIO connections to match the now-working BS setup. He also fixed PR2, which had a similar problem.
- Enzo replaced LPCDs with HPCDs in the SR3.
- Hirata-san installed the cable clamps and Cu segments on the SF cap.
- Hirata-san and Kozu-kun continued tuning the filter in PI #3. Unfortunately it seems to be rather weaker than expected, and we have not found a compression setting that gives a good frequency. We may have to use tricks like reducing the number of Cu segments on the SF (or using Al ones) to save weight.
- Mark, Enzo and Terrence suspended the BF/... section from the SF, routed all the cables from the BF/... stages up around the BF, via the SF-BF margin rod to the bottom of the SF, and got the hanging section aligned for TFs.
- Enzo cabled and tested the SF LVDT (but not yet the SF FR).
- Mark and Enzo released an update to the BS Circuit Diagram D1503600-v15 with corrections to the BIO and other sections.
Plan for week of 6/18
- Mark, Enzo, Hirata-san, Kozu-kun, Terrence at Kamioka Mon-Fri.
- --
- Receive second and third sets of LBB damper rings.
- Take TFs.
- Cable, test SF LVDT and FR.
- Add calculated ballast to SF.
- Finish tuning F0 #3 for SR3.
- Park F0 #1 (for SR2) in top of SR3 assembly frame.
- Move F0 #3 behind SR3.
- Move F0 #1 to "factory" area (in front of SRM) and start rebuild.
- Install PI.
- Suspend SF/... section.
- Lots of cabling.
Plan for week of 6/25
- Mark, Enzo, Hirata-san, Kozu-kun, Terrence at Kamioka Mon-Fri.
To-Do Lists, Schedule
Vacation Info
Type-Bp (Shoda)
Past week report
- Worked on Oplev diagonalization for PR2 and PR3.
- Coil balance of PR2 optic was adjusted
- PR3 IM and BF sensor matrices were also diagonalized.
- Working on decay time (w/ damping) measurement on PR3.
Plan for coming weeks
OMMT & OSTM (Ohishi)
Past week report
- Thanks to Tanioka-san and Nagano-san (NICT), we have finished parts replacement of IMMT1.
- We have replaced stainless screws in the intermediate mass with non-magnetic screws.
- Measured transfer functions of length, pitch, and yaw and found no problem.
Plan for coming weeks
- Order some parts of OMMT.
LVDT Driver (Tanaka)
Past week report
Plan for coming weeks
Other site works
- Power line replacement is planed on 26th June.
Safety
- Incidents:
- Foreseen risks
- Type-A: Crane work.
- Type-B: Crane work.
- Type-Bp:
Discussion
Travel Plans
- Travel (Week of 6/18):
- Takahashi: 18-22
- Okutomi: 18-22
- Sato: 18-22
- Ishizaki:
- Mark: 18-22
- Hirata: 18-22
- Enzo: 18-22
- Shoda:
- Ohishi:
- Fujii:
- Tanioka:
- Tanaka:
- Kozu (ICRR): 18-22
- Arai (ICRR):
- Terrence: 18-22
- Travel (Week of 6/25):
- Takahashi: 25-29
- Okutomi:
- Sato: 25-29
- Ishizaki:
- Mark: 25-29
- Hirata: 25-29
- Enzo: 25-29
- Shoda:
- Ohishi:
- Fujii: 25-29
- Tanioka:
- Tanaka:
- Kozu (ICRR): 25-29
- Arai (ICRR):
- Terrence: 25-29
Next meeting
On 2018/6/22(Fri)