|
Size: 5505
Comment:
|
Size: 5584
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 116: | Line 116: |
| * Sato: | * Sato: 7/30-8/3 |
| Line 119: | Line 119: |
| * Mark: * Hirata: * Enzo: * Panwei |
* Mark: 7/30-8/3 * Hirata: 7/30-8/3 * Enzo: 7/30-8/3 * Panwei: |
| Line 126: | Line 126: |
| * Fujii: | * Fujii: 8/1-8/3 |
| Line 133: | Line 133: |
| * Takahashi: | * Takahashi: 8/6-10 |
| Line 135: | Line 135: |
| * Sato: | * Sato: 8/6-10 |
| Line 137: | Line 137: |
| * Ishizaki: * Mark: * Hirata: * Enzo: * Terrence: * Panwei * Shoda: * Ohishi: * Fujii: |
* Ishizaki: * Mark: 8/6-10 * Hirata: 8/6-10 * Enzo: 8/6-10 * Terrence: * Panwei: * Shoda: * Ohishi: * Fujii: 8/6-10 |
Agenda/Minutes of the VIS Meeting on 2018/7/27
2018/7/27 13:30 -
Participants:
Progress report
Schedule Chart
Type-A : (PDF/MPP)
Type-B: (PDF/MPP)
Type-A (Takahashi)
Past week report
[Y-front]
- Implemented the cabling in the F1.
- Mounted the F1 on the end plate. The filter chain was suspended from the F1.
- Calibrated the LVDT in the F1.
- Implemented the cabling between the F1 and the F2.
- Tuned the F1. Initially the proper frequency was 0.57Hz.
- Added the compression to 8 blades by 0.5mm, The F1 went to the bi-stable.
- Decompressed 4 blades. The proper frequency became 0.44Hz.
- Closed the cup and suspended the F1 by crane. The keystone went to the lower limit.
- Replaced the blades for the FR from the F2 type to F1 type.
- Finally the proper frequency became 0.35Hz (corresponding to the tuning frequency of 0.22Hz) with the cup.
- Checked the FR range. The FR can cover the full range of keystone.
- Implemented the cabling around the F1.
- Found that the primary coil was touching to the secondary coil in the F2. It was repaired.
- Lifted down the EQ stop into the corrugate tube. The end plate for F1 sit on the frame lock.
[X-front]
- Attached the additional FR on the TF.
- Adjusted the height of keyston in the TF.
Plan for coming weeks
- Setting of the pre-isolator.
- Calibration of the LVDTs for BF damper.
Type B (Mark)
Report for week of 7/23
- We finished adding cable clamps to the SR2 PI and SF.
- We craned in the SR2 PI and installed the PI-SF rod. As expected, there was not quite enough load capacity for even a 2 Cu-segment SF.
We changed the CuBe spring on the SR2 PI from an F2 type to an F1 and got about an extra 2 kg, which is plenty for 2 Cu segments.
- We moved the feedthroughs from the SR3 assembly frame to the SR3 tank. Mirapro then moved the assembly frame to the SRM area. Mirapro also moved the duct on the +Y side of the SR3 tank to give us access to that side.
- We laid a new set of SR3 in-air cables running directly to the tank. (We will repurpose the original set for SRM.)
- We reconnected the SR3 cables on both sides of the feedthroughs. We had to adjust the routing of the in-vacuum ones several times to stop them touching the tank, but we finally found a good solution.
- With help from Ohishi-san we removed the First Contact and then unlocked the whole suspension by stages. We need to check the optic pitch and do a little more mechanical adjustment but we were able to take TFs and implement IM and GAS control filters.
- Hirata-san and Fujii-kun received most of the SRM metal mass parts, did inventory and practiced some of the key steps in the assembly, especially inserting the Sol-Black coated parts without touching the delicate surfaces.
- Mark did inventory of the BIO stuff for the WD and of the OL parts.
Plan for week of 7/30
- Mark, Enzo, Hirata-san, Fabian, Kozu-kun, Terrence, Panwei at Kamioka Mon-Fri.
- Kozu-kun works at Mozumi Mon, Fri, and Thu afternoon.
SR3
- Finalize optic pitch, OSEM alignment.
- Hook LBB, add ballast mass, set up temporary OL (horizontal beam, pitch/yaw only).
- Identify/acquire items required for final OL (steering mirrors, second QPD, lens, collimator).
SR2
- Fix issue with PI/SS/chain alignment.
- Put magnets on SR damper ring (2 Cu segment pattern).
- Remove PI-SF rod temporarily, install Cu segments and damper ring.
- Do vertical height budget; choose optimum F0 keystone height.
- Add estimated final ballast mass.
- Do PI cable routing.
- Adjust ballast/trim mass, with reserve for cables.
SRM
- Set up filter tuning area.
- Tune F0 for SRM.
- Add LBB blade units, cable clamps etc.
- Check PI coil connections, IP LVDT magnets.
To-Do Lists, Schedule
Vacation Info
- Terrence: 8/24-26 f2f, then returns to Hong Kong.
- Enzo: 9/14 JPS, 9/15 through 10/8 vacation in Chile.
Type-Bp (Shoda)
Past week report
Plan for coming weeks
OMMT & OSTM (Ohishi)
Past week report
Plan for coming weeks
VIS electronics (Tanaka)
Past week report
Plan for coming weeks
Other site works
- Sept 10(Mon): Planned power outage
Safety
- Incidents:
- Foreseen risks
- Type-A:
- Type-B:
Discussion
Travel Plans
- Travel (Week of 7/30):
- Takahashi:
- Okutomi:
- Sato: 7/30-8/3
- Lucia:
- Ishizaki:
- Mark: 7/30-8/3
- Hirata: 7/30-8/3
- Enzo: 7/30-8/3
- Panwei:
- Terrence:
- Shoda:
- Ohishi:
- Fujii: 8/1-8/3
- Tanioka:
- Tanaka:
- Kozu (ICRR):
- Arai (ICRR):
- Travel (Week of 8/6):
- Takahashi: 8/6-10
- Okutomi:
- Sato: 8/6-10
- Lucia:
- Ishizaki:
- Mark: 8/6-10
- Hirata: 8/6-10
- Enzo: 8/6-10
- Terrence:
- Panwei:
- Shoda:
- Ohishi:
- Fujii: 8/6-10
- Tanioka:
- Tanaka:
- Kozu (ICRR):
- Arai (ICRR):