Agenda/Minutes of the VIS Meeting on 2017/9/15
2017/9/15 13:30 -
Participants:
Progress report
Schedule Chart
- Type-A:
- Type-B:
- Type-Bp:
Type-A (Takahashi)
Past week report
[X-end]
11th(Mon)
- Lifted down the F2 into the corrugate tube.
- Extended the EQ stop to the top ring.
- Made the flat cables.
- Applied the cabling from F1.
12th(Tue)
- Checked the LVDT signals from the filter chain.
- Lifted down the F1 into the corrugate tube.
- Set the anchor to the bottom of EQ stop.
- Adjusted the load for F3.
13th(Wed)
- Lifted up the F1 to the frame lock.
- Adjust the tilt of F2.
14th(Thu)
- Attached the cone bellows to the top chamber.
- Adjust the tilt of F2.
[Y-end]
15th(Fri)
- Joined to the cryo-payload test.
Plan for coming weeks
- Finish the installation of F1.
- Start the installation of pre-isolator.
Type B (Mark)
Past week report
Plan for coming weeks
Type-Bp (Shoda)
Past week report
- PRM
- We cleaned the suspension and fixed it. Now almost ready for the installation.
- PR2
- We found we could not measure the PR2 transfer functions.
- We found the suspension is touching the EQ stop. It is because the Traverser did not have two spacers below the top plate and SF stage and EQ stop are tilted. We lifted the suspension from the SF stage a little and inserted the spacer sims so that the height is as designed. Now the suspension does not seem to be touching anywhere.
- The LVDT signals are different from what we observed in July.
- The creepy high freq noise was gone, and the DC offset was different. We do not know in which point the status has been changed, since the excitation signals are plugged out since the middle of Aug. We adjusted the GAS LVDT offset again.
- The +/- 18V power supply was not proper and the OSEM noise level was too high. Also coil drivers did not seem to be working properly. It appears since 4th Aug. Now it is fixed.
- All the GAS TFs have not been measured yet.
- We removed/changed some screws that require vent holes.
Plan for coming weeks
- PRM installation
OMMT & OSTM (Ohishi)
Past week report
Plan for coming weeks
Watchdog system (Tanaka)
Past week report
Waiting for concrete information on installation location.The type(High power,Low power)and number actually needed,and the peripheral equipment accompanying it.-->Waiting for information provision.
Creating the final version for mass production and running its operation test.-->Implementation completion and operation test.
I held a meeting to make estimates with several vendors.-->Price negotiation in progress(Ongoing).
Plan for coming weeks
Creating the final version for mass production and running its operation test.-->Implementation completion and operation test.
Creation of extended I/O PCB(plot type (With the Main 4ch WDS box and I/O box,I/O board For relay).-->Ongoing.
Other site works
- End of Aug. to Nov.: Mozumi entrance will be closed
Safety
- Incidents:
- Foreseen risks
- Type-A:
- Type-B:
- Type-Bp:
Discussion
Travel Plans
- Travel (Week of 9/18):
- Takahashi: 19-22
- Okutomi: 19-22
- Sato: 19-22
- Ishizaki: 19-21
- Mark: 19-22
- Fabian: 19-22
- Hirata: 19-22
- Enzo: 19-22
- Shoda: 19-21
- Ohishi:
- Fujii:
- Tanaka:
- Yoshioka (Toyama): 18,21
- Kozu (ICRR): 19-22
- Arai (ICRR):
- Travel (Week of 9/25):
- Takahashi:
- Okutomi:
- Sato:
- Ishizaki:
- Mark:
- Fabian:
- Hirata:
- Enzo:
- Shoda:
- Ohishi:
- Fujii:
- Tanaka:
- Yoshioka (Toyama):
- Kozu (ICRR):
- Arai (ICRR):
Next meeting
On 2017/9/22(Fri)