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Size: 4329
Comment:
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Size: 4946
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
| Line 9: | Line 9: |
| Schedule Chart ([[https://www.dropbox.com/s/2q2elzj6s4lep6r/VIS%20Overall%20Schedule-20161014.pdf?dl=0|PDF]],[[https://www.dropbox.com/s/kwo9bxfb2711jkx/VIS%20Overall%20Schedule-20161014.mpp?dl=0|MPP]]) | Schedule Chart ([[https://www.dropbox.com/s/2q2elzj6s4lep6r/VIS%20Overall%20Schedule-20161014.pdf?dl=0|PDF]],[[https://www.dropbox.com/s/kwo9bxfb2711jkx/VIS%20Overall%20Schedule-20161014.mpp?dl=0|MPP]]) '''To Be Updated''' |
| Line 16: | Line 16: |
| * Maraging wire: Hirata-san made 2D drawings. The wires will be ordered soon. | * Maraging wire: Hirata-san made 2D drawings. The wires will be ordered soon. * Asking CRY to check the rod design for suspending the cryogenic payload. Set a deadline for the answer (Takahashi) |
| Line 24: | Line 25: |
| * Now the resonant frequency is around 0.6 Hz as opposed to the 0.4 Hz when it was tuned. * Continue the test hanging with this configuration, but check if 0.6 Hz is OK or not from the viewpoint of the vibration isolation performance with simulation. * Hirata-san will come to Kamioka from Nov. 7 to 11 to check the BF. |
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| Line 51: | Line 55: |
| * Disassembly of PR3 * To be done from Nov. 8 to 11. Enzo and Kasuya-san will join. |
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| Line 57: | Line 64: |
| * Will show the design at the next AEL meeting. |
Agenda/Minutes of the VIS Meeting on 2016/10/28
2016/10/28 13:30 - @Mitaka F2F.
Participants: Takahashi, Mark, Sato, Tanaka, Okutomi, Ishizaki, Aso, Enzo, Hirata, Akutsu, Shoda, Fujii, Raffaele
Progress report
Schedule Chart (PDF,MPP) To Be Updated
Type-A (Takahashi)
- Pre-isolator: The top filter was mounted onto the IP. The shaft screw of motor was not matching to the slider for fishing rod. New shafts were ordered.
- EQ stop, release sensor, dummy payload: Production is on going.
- BF damper: Open bidding is on 9th November.
- Maraging wire: Hirata-san made 2D drawings. The wires will be ordered soon.
- Asking CRY to check the rod design for suspending the cryogenic payload. Set a deadline for the answer (Takahashi)
- Installation: Making assembly drawings for the installation procedure document. The review is held on 4th November.
Type B (Mark)
- Type B Past Week Summary
- Fabian, Mark and Liu-kun did BS installation at Kamioka:
- Debugged the issue with the BF keystone being tilted enough to cause rubbing on the yoke for the magnets. It was solved by moving the yoke ≈1 mm taking advantage of the oversized holes.
- Measured the height of the payload as a function of trim mass. The BF spring seems to have a slightly lower load capacity and a rather higher spring constant than when it was remeasured by Hirata-san.
- Now the resonant frequency is around 0.6 Hz as opposed to the 0.4 Hz when it was tuned.
- Continue the test hanging with this configuration, but check if 0.6 Hz is OK or not from the viewpoint of the vibration isolation performance with simulation.
- Hirata-san will come to Kamioka from Nov. 7 to 11 to check the BF.
- Removed IM trim mass to set the average height of the keystone to the CAD value.
- Moved IM trim mass around to set the pitch of the dummy BS and the roll of the IM.
- Constructed the rest of the IRM around the IM.
- Hirata-san
- Prepared to get quotes for different types of "flying saucer" cable clamps (D1504530, D1605625, D1605734).
- Finished BS assembly drawings (in-tank version) and sent to Saito-sensei).
- Finished maraging rod 3D models and drawings (for Type A)
- Modified top plate drawings for PRM inner frame.
- Fabian, Mark and Liu-kun did BS installation at Kamioka:
Type-Bp (Shoda)
- BFRM
- Still waiting for ordering process.
- Stab Flags
- Waiting for the cost estimation.
- Assembly frame
- Asking cost estimate. Also asking to upgrade the assembly frame in the end of November.
- Install procedure
- pictures how to install whole suspension chain into the chamber is circulated.
- We will ask the company about the accerelation of the crane, the chain block, and the lever block. According to their information, we will buy a chain block or a lever block and test them at Mitaka.
- pictures how to install whole suspension chain into the chamber is circulated.
- Flag removing jig.
- The model is made by Shoda and approved by Hirose-san. Now the 2D drawing is being made.
- Disassembly of PR3
- To be done from Nov. 8 to 11. Enzo and Kasuya-san will join.
IMMT (Ohishi)
- Put a report here
Watchdog system (Tanaka)
Conference material PCB Design Draft version.(Oct 21th 2016)PDF
Design and preparation(investigation of procurement) for production.PDF
- Will show the design at the next AEL meeting.
Safety
- No issue
Discussion
- Suspension naming convention (Okutomi)
- Type-Bp installation tool: Lever block or Chain block (Shoda)
Site work plan for the next week
- Mon:
- Tue:
- Wed:
- Thu:
- Fri:
Travel Plans
- Travel (Week of 10/31):
- Takahashi:
- Shoda:
- Mark:
- Fabian:
- Okutomi:
- Fujii:
- Ishizaki:
- Hirata:
- Sato:
- Ohishi:
- Travel (Week of 11/7):
- Takahashi: 7-9 (Extended chief meeting/Fire drill/Accelerometer test)
- Shoda: 7-11 (Extended chief meeting/Fire drill/PR3 disassemble)
- Mark: 8 - 11 (Fire drill/BS)
- Fabian:
- Okutomi: 7 - 11 (Extended chief meeting/Fire drill/Accelerometer test/Realtime code)
- Fujii: ? (Fire drill)
- Ishizaki:
- Hirata: 8 - 11 (Fire drill/BS)
- Sato: 7-9 (Fire drill/Accelerometer test)
- Enzo: 8-11 (PR3 disassembly)
- Ohishi:
Next meeting
On 2016/11/4(Fri)
VIS F2F: Nov. 18, Dec. 2