Agenda/Minutes of the VIS Meeting on 2017/7/21
2017/7/21 13:30 - 15:50
Participants: Mark, Enzo, Ishizaki, Fabian, Shoda, Aso, Okutomi, Tanaka, Simon, Sato, Takahashi, Ohishi, Raffaele
Progress report
- Type-A: On schedule
- Type-B: 1.5 weeks delay, but by re-arranging the works, there will be no net delay in the overall schedule.
- Type-Bp:
Type-A (Takahashi)
Past week report
[X-end]
19th(Wed)
- Transported some items from Y-end to X-end.
20th(Thu)
- Preassembled the BF damper.
- Measured the weight of DP and BF.
- Replaced the receptacles in the BF.
- Replaced the blades for FR in the BF.
- Replaced the cable clamps on the BF
- Set the release sensors for the BF.
21st(Fri)
- Adjusted the rotation of frame lock.
- Hooked the short maraging wire to the BF. The DP was suspended from the BF.
- Tuned the BF roughly. The optimal frequency was about 0.5Hz. More compression is necessary.
[Y-end]
18th(Tue)
- Cabled from the cryo-payload to the BF.
- Closed the EYV chamber completely, The o-ring was replaced.
19th(Wed)
- Checked the cable connection. One cable was disconnected.
- Unplugged in-air cables from feedthroughs.
- Closed the cross tube completely.
20h(Thu)
- The brackets for the corrugate tube were replaced. Measured the height of the EYV chamber.
21st(Fri)
- Plugged in-air cables to feedthroughs.
- Started evacuation of the chamber.
Plan for coming weeks
- Monitering behavior of the Type-A tower in Y-end.
- Installation of the bottom filter in X-end.
Type B (Mark)
Past week report
Plan for coming weeks
Type-Bp (Shoda)
Past week report
- IM TF measurement
- IM TFs seem to be OK.
- The coupling from IML to TMP could not be observed with Oplev with a good coherence. The coupling ration should be less than 10^-1 rad/m with a rough estimation. (Some parameters need to be checked.)
- All parts are assembled on the suspension.
- BF/BFRM parts are assembled except that BF/IM/TM are not suspended from the SF.
- Cabling is almost done.
- Berndy male pins are running out.
Plan for coming weeks
- Suspend the BF and blow from the SF, and adjust the weight and the balance
- TF check
- Installation preparation
- Prepare for PRM Traverser shipping.
IMMT (Ohishi)
Past week report
Plan for coming weeks
Watchdog system (Tanaka)
Past week report
Creation of extended I/O PCB(plot type (With the Main 4ch WDS box and I/O box,I/O board For relay).-->
Order electronic parts -->No delivery(Coop Univ.Tokyo).
Order PCB's(Ex-I/O Interface and relative PCB's) -->Delivery complete.
- Looking for board manufacturer(Manufacturer who makes PCB manufacturing and mounting(including parts procurement).
- Start of preliminary experiment at KAGRA site.
Start production of equipment(As soon as parts are delivered).-->Start PCB check.
Plan for coming weeks
Experiment schedule(for KAGRA site).-->24th( Tokyo-->Toyama ),25-26th full(KAGRA),27th(Reserve and Toyama --> Tokyo )
Other site works
- 7/25 - 26: Y-arm water pump exchange
- 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 7/24):
- Takahashi: 24 - 28
- Okutomi: 24 - 28
- Sato: 24 - 28
- Ishizaki: 24 - 28
- Mark: 24 - 28
- Fabian: 24 - 28
- Hirata: 25 - 28
- Enzo:
- Shoda: 24 - 27
- Ohishi:
- Fujii:
- Tanaka: 25 - 26 (27)
- Kuroki: 25 - 28
- Hashimoto(Hosei): 24 - 27
- Yoshioka (Toyama): 25,26,28
- Travel (Week of 7/31):
- Takahashi:
- Okutomi:
- Sato:
- Ishizaki:
- Mark:
- Fabian:
- Hirata:
- Enzo:
- Shoda:
- Ohishi:
- Fujii:
- Tanaka:
- Hashimoto(Hosei):
- Yoshioka (Toyama): 1,2,4
Next meeting
On 2017/7/28(Fri)