|
Size: 4020
Comment:
|
Size: 5478
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
| Line 12: | Line 12: |
| Installation in Y-end: | Installation in Y-end: |
| Line 39: | Line 40: |
| Line 40: | Line 42: |
| * Checked the optical bench suspension parts * Optical bench magnetic damper is in Akeno, delivered on Feb. 27th. * Jigs to arrange magnets on the optical bench magnetic damper is not designed nor procured. * Diameter of the head of the suspension rods are different from what we ordered. -> Asking company to make the correct ones. * Hooking screws cannot go smoothly even they are SDC coated. -> Asking to make the new ones loosely. * Cu plates for eddy current damping are oxidized so much. They do not look clean. just covered by bubble packs. * Assembled the whole stages * Not suspended yet. * Found the holes for suspension rods are too small. The company made a mistake on the drawing update. Two plates at Kamioka will be sent to the company. The other plate was re-machined at Mitaka. * Cabling around BF takes a lot of time... * BF LVDT temporally circuits were made by Miyo-kun, Someya-san, and Hashimoto-san. * Second test assembly of BFRM at Mitaka * ATC re-machined the holes for suspension rods. -> Will be sent to Kamioka. * BFRM was properly suspended. |
|
| Line 41: | Line 62: |
| * Suspend BF & BFRM * Adjust weight of the BF * place the ballast masses and balance it * Set LVDT coils on BFRM and check signals * Traverser parts will be replaced by Uraguchi-san ==== Long term to do ==== * Calibration of BF LVDT * Check acceleration during the installation using the chain-block and jacks |
Agenda/Minutes of the VIS Meeting on 2017/2/17
2017/2/17 13:30 -
Participants:
Progress report
Type-A (Takahashi)
Past week report
Installation in Y-end:
13th(Mon)
- Installed the protection net to the bottom of cross tube.
- Released the keystone of BF. The weight of dummy payload was near the optimal load of BF.
14th(Tue)
- Tuned the weight of dummy payload.
- Started cabling around the BF and the dummy payload. Finished on 16th.
15th(Wed)
- Started making the short cable for the LVDT on BF. Not finished.
- Prepared the LVDT driver with the oscillator and the oscilloscope.
16th(Thu)
- Cariblated the LVDT on BF.
- Checked the range of FR on BF. It was about 2mm. Additional blades are necessary.
MISC
- The setup of EQ stop for prototype test was withdrawn from ATC on 17th.
- Maraging wire: The 3.3m wire will be treated at Himeji facility of Kinzoku-giken. It takes one month.
Plan for coming weeks
- Adjust the BF.
- Assemble the BF damper.
- Assemble the EQ stop for F3 and set the F3.
Type B (Mark)
Past week report
Plan for coming weeks
Type-Bp (Shoda)
Past week report
- Checked the optical bench suspension parts
- Optical bench magnetic damper is in Akeno, delivered on Feb. 27th.
- Jigs to arrange magnets on the optical bench magnetic damper is not designed nor procured.
Diameter of the head of the suspension rods are different from what we ordered. -> Asking company to make the correct ones.
Hooking screws cannot go smoothly even they are SDC coated. -> Asking to make the new ones loosely.
- Cu plates for eddy current damping are oxidized so much. They do not look clean. just covered by bubble packs.
- Assembled the whole stages
- Not suspended yet.
- Found the holes for suspension rods are too small. The company made a mistake on the drawing update.
- Two plates at Kamioka will be sent to the company. The other plate was re-machined at Mitaka.
- Cabling around BF takes a lot of time...
- BF LVDT temporally circuits were made by Miyo-kun, Someya-san, and Hashimoto-san.
- Second test assembly of BFRM at Mitaka
ATC re-machined the holes for suspension rods. -> Will be sent to Kamioka.
- BFRM was properly suspended.
Plan for coming weeks
Suspend BF & BFRM
- Adjust weight of the BF
- place the ballast masses and balance it
- Set LVDT coils on BFRM and check signals
- Traverser parts will be replaced by Uraguchi-san
Long term to do
- Calibration of BF LVDT
- Check acceleration during the installation using the chain-block and jacks
IMMT (Ohishi)
Past week report
Plan for coming weeks
Watchdog system (Tanaka)
Past week report
- Items that have been delivered.
- PCB + Metal mask( for Main board(WSD) )
- Cream solder
- Redesign(Front panel board for Main 4ch WDS Box and front panel for Ex-I/O Box)Adjust the spacing of the front panel conectors.
Project-WDS Peripheral circuit PCB Design Ver2(Summary)PDF JGW-E1706266
Project-WDS Peripheral circuit PCB Design Version 2(Detail)PDF JGW-E1706265
Project-WDS Ex-I/O PCB Design Ver 1(Summary)PDF JGW-E1706268
Project-WDS Ex-I/O PCB Design Ver 1(Detail)PDF JGW-E1706267
Plan for coming weeks
- I'm planning to perform surface mounting for Power board(WDS Main 4ch Box) in reflow furnace in Akihabara.Since a large PCB size( 320mm * 100mm) is required,a large reflow furnace is necessary,so it can be borrowed in Akihabara(DMM-make site.And of course,paid).
Safety
- Incidents:
- Foreseen risks
- Type-A:
- Type-B:
- Type-Bp:
Discussion
- Mirror disassembly jigs (Hirata)
Travel Plans
- Travel (Week of 2/20):
- Takahashi: 20- 24
- Shoda: 21 - 24
- Mark: 20 - 24
- Fabian: 20 - 24
- Okutomi: 20 - 22
- Fujii:
- Ishizaki: 20 - 24
- Hirata: 20 - 24
- Sato: 20 - 24
- Enzo: 20 - 24
- Hashimoto (Hosei Univ.): 20 - 24
- Ohishi:
- Tanaka:
- Travel (Week of 2/27):
- Takahashi:
- Shoda:
- Mark:
- Fabian:
- Okutomi:
- Fujii:
- Ishizaki:
- Hirata:
- Sato:
- Enzo:
- Hashimoto (Hosei Univ.):
- Someya (Hosei Univ.):
- Ohishi:
- Tanaka:
Next meeting
On 2017/2/24(Fri) in Mitaka
March VIS F2F: March 3