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Size: 4589
Comment:
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Size: 4959
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
| Line 5: | Line 5: |
| Participants: | Participants: Tanaka, Mark, Sato, Ishizaki, Fabian, Hirata, Okutomi, Shoda, Enzo, Someya, Hashimoto, Akutsu |
| Line 15: | Line 15: |
| * Maraging wire: The wires are delivered on 31st. They are sent to the thermal proccess on 1st February. | * Maraging wire: The wires are delivered on 31st. They are sent to the thermal proccess on 1st February. To be shipped to Kamioka on Feb. 7th. |
| Line 19: | Line 19: |
Next Week Plan * BF damping pre-assembly * Open the top chamber. * Set the assembly base. * Sato-san will stay in Mitaka to send the delivered rods to the heat treatment. Also incorporate cables into the Type-A CAD model. |
Agenda/Minutes of the VIS Meeting on 2017/1/27
2017/1/27 13:30 -
Participants: Tanaka, Mark, Sato, Ishizaki, Fabian, Hirata, Okutomi, Shoda, Enzo, Someya, Hashimoto, Akutsu
Progress report
Type-A (Takahashi)
- EYV chamber: Top chamber was connected again.
- Pre-isolator: The pre-isolators for SR were packed and moved out of the large clean room on 23rd.
- BF damper: Checked delivered parts on 24th.
- Maraging wire: The wires are delivered on 31st. They are sent to the thermal proccess on 1st February. To be shipped to Kamioka on Feb. 7th.
- The 3.3m wire can be treated at Himeji facility of Kinzoku-giken.
- Preparation of installation: The floor of clean booth was covered by stainless steel sheet. The foot holds were assembled.
- Other large tools (rack, wagon, desk, so on) also were installed into the clean booth.
- BF damping pre-assembly
- Open the top chamber.
- Set the assembly base.
- Sato-san will stay in Mitaka to send the delivered rods to the heat treatment. Also incorporate cables into the Type-A CAD model.
Type B (Mark)
- Hirata-san:
- Received many parts from i-ject for BFRM (took pictures and took them into ATC cleanroom).
- got quotes for PRM/SRM payload from i-ject.
- Checked quotes and asked for some modifications.)
- Washed parts (parts for type-A, small hexagons, screws, etc\)
- Wiped 9 piano wires and sent to Kamioka for PR.
- pdated Fabian's EQstop parts for BS recoilmass and updated EQstop assy drawings.
- Fabian
- Worked out geometry for blade adjustment.
- Designed additional ballast masses for BS BF (and SR).
- Mark and Enzo (at Kamioka)
- Did two rounds of adjustment of the blades with help from Takahashi-san (one for position, one for frequency)
- Surveyed the position of the rod using the vertical mode of the bubble level.
- Got apparent improvement as judged at the IRM-IM EQ stops (but still not perfect).
- Did one more round of blade adjustments (without Takahashi-san)
- Got good agreement with IRM-IM EQ stops, so put BF cap on and raised the whole system to check for balance.
- Found balance still fairly bad: about the same on the -X,+Y diagonal and about half on the +X,+Y diagonal (70 and 30 mm worth of motion of a single trim mass respectively; previous a bit over 70 mm each). Moreover, IRM-IM alignment no longer good.
- From the imbalance torques, calculated the offset of rod as 2.3 mm in the direction 22 degrees to the +X side of -Y.
- Calculated the blade adjustments required: {-0.325194, -1.79175, 2.11695} mm
- Prepared to apply adjustments (removed cap etc).
Type-Bp (Shoda)
Hanging Report: TF measured, BF has been set.
- EQ stop parts below the BF were assembled.
- We measured TFs of RM using PSs. (Their alignment was not so easy.)
- BF was placed on the EQ stop. (Traverser was moved out of the clean room for accesibility.)
- BF and IM was connected. Not hanged yet.
- BFRM parts were delivered.
Next week task: Hang IRM
- Hang IM and adjust the weight.
- Hang IRM and balance IM.
- IRM and set OSEMs.
- A mirror box was sent to a company for modification
- Flag bases were sent to a company for modification
- Winch were sent to Mitaka for inspection
To do
- Establish disassemble procedure
- Buy the new tools
IMMT (Ohishi)
- Put a report here
Watchdog system (Tanaka)
- WDS PCB Design Document.Main rack( Main board + peripheral board )design.
Correction of PCB design and correction by DRC(by manufacturer).PDF(JGW-E1706101)
Safety
- Incidents:
- Foreseen risks
- Type-A:
- Type-B:
- Type-Bp:
Discussion
- Smaller coil design status update (Aso)
Site work plan for the next week
- Mon:
- Tue:
- Wed:
- Thu:
- Fri:
Travel Plans
- Travel (Week of 1/30):
- Takahashi: 30-2/3
- Shoda: 31-2/3
- Mark: 30-2/3
- Fabian:
- Okutomi: 30-2/3
- Fujii:
- Ishizaki: 30-2/3
- Hirata:
- Sato: 30-2/3
- Enzo: 30-2/3
- Hashimoto (Hosei Univ.):
- Someya (Hosei Univ.):
- Ohishi:
- Travel (Week of 2/6):
- Takahashi:
- Shoda:
- Mark:
- Fabian:
- Okutomi:
- Fujii:
- Ishizaki:
- Hirata:
- Sato:
- Enzo:
- Hashimoto (Hosei Univ.):
- Someya (Hosei Univ.):
- Ohishi:
Next meeting
On 2017/2/3(Fri) VIS F2F: Feb. 17th