Agenda/Minutes of the VIS Meeting on 2018/11/2
2018/11/2 13:30 - 14:40
Participants: Takahashi, Mark, Aso, Sato, Arai, Terrence, Tanaka, Enzo, Okutomi, Fujii, Lucia
Progress report
Schedule Chart
Type-A : (PDF/MPP)
Type-B: (PDF/MPP)
Type-C: (XLSX)
Type-A (Takahashi)
Past week report
[Y-front]
- Removed the ballast masses from the DP.
- Disassembled and dismounted the DP.
- Installed the suspension wires with the junction box.
- Put the cables along the wire through the shield pipe.
[Y-end]
- Assembled the geophone pods.
- Confirmed the direction of LVDTs on the IP.
Plan for coming weeks
- Installation of the cryo-payload in Y-front.
- Calibration of the geophones for Y-end.
Type B (Mark)
Report for week of 10/29
- SRM
- Enzo repaired some broken cables and made some long cables from shorter ones. We ultrasonically cleaned them at Toyama U, with help from Yamamoto-san. Enzo then reinforced the joins with EP30 (two cables) or heat shrink.
- Hirata-san finished tuning the PI. It is now complete except for some PEEK cable clamp pieces which are expected next Monday.
- Hirata-san wiped writing marks off the F0 and SF yoke magnets, and off the PI.
- Hirata-san found we were running out of magnets and ordered more - we have almost enough (short by one) for the SF damper, but will need more for the LBB damper.
- Fabian cabled and tested the BF cap picos.
- Fabian routed all the cables up to the underside of the SF. He cabled and tested the SF LVDT and stepper.
- We added the SF cap and weighed the SF/... section. We appear to have a good amount of load capacity margin.
- SR2
- We opened the SR2 tank, borrowed a geophone for Fujii-kun's geophone test, and left the IP locked.
- We gathered parts for the SR2 OL. We believe we have all the pieces we need except for an LED (the one originally allocated to SR2 is currently being used for pitch setting on SRM and we may need to steal it back). Akutsu-san wants to supervise us setting up the LED and receiver supports, so that will happen next week.
- SR3
- Terrence visited for another week and made more measurements on the OL. A report is forthcoming.
- BS
- We searched for the dog clamps that we had borrowed from AOS to serve as ballast for the BS LBB and returned them to the AOS pallet.
- Electronics
- Enzo analyzed the LPCD and worked out the resistors we need to get the drive current recommended for the IM-V OSEMs by Shoda-san.
To-Do Lists, Schedule
Plan for week of 11/4
- Mark, Enzo, Hirata-san and Fabian at Kamioka Mon-Fri.
SRM
- Main sequence
- Add magnets to SF damper.
- Install #353 poles
- Move NB-03 jacks down.
- Crane PI into AF.
- Install F0-SF rod (#331) and flying saucer.
- Route SF/... cables up to underside of F0.
- Do vertical height budget.
- Adjust SF trim mass for balance and keystone height.
- Cable/test IP LVDTs.
- Cable/test IP FRs.
- LBB
- Move KOACH filters
- Put LBB damper rings in tank.
- Set tank jacks to nominal height.
Plan for week of 11/11
- Mark, Enzo, Hirata-san and Fabian at Kamioka Mon-Fri.
SRM
- Unlock IP and center roughly.
- Calibrate IP LVDTs.
- Check/adjust alignment of SS.
- Add arc weights and geophones (or extra mass equivalent to geophones).
- Cable/test geophones.
- Improve centering/tuning of IP and SS alignment.
Plan for week of 11/18
- Friday 11/23 is Labor Thanksgiving Day.
- Mark, Enzo, Hirata-san and Fabian at Kamioka Mon-Thu.
SRM
- Unlock IP and center roughly.
- Calibrate IP LVDTs.
- Check/adjust alignment of SS.
- Add arc weights and geophones (or extra mass equivalent to geophones).
- Cable/test geophones.
- Improve centering/tuning of IP and SS alignment.
- Crane into tank.
Type-Bp (Shoda)
Past week report
Plan for coming weeks
OMMT & OSTM (Ohishi)
Past week report
Plan for coming weeks
VIS electronics (Tanaka)
Past week report
Plan for coming weeks
Other site works
Safety
- Incidents: When I dismounted the DP, I gut a blood blister on my finger. (R. Takahashi)
- Foreseen risks
- Type-A: Crane work
- Type-B: Crane work
Discussion
- JPS/ASJ presentations
- JPS
- Type-A: Takahashi (installation), Lucia (control)
- Type-B: Enzo
- ASJ
- VIS: Fujii
- JPS
- Preparation for the weekly maintenance
- Type-A: Lucia
- Type-B: Mark
- Type-Bp: Fujii
Travel Plans
- Travel (Week of 11/5):
- Takahashi:
- Okutomi:
- Sato: 7-9
- Lucia: 5-9
- Fabian: 5-9
- Mark: 5-9
- Hirata: 5-9
- Enzo: 5-9
- Shoda:
- Ohishi:
- Fujii: 5-9
- Tanioka:
- Tanaka:
- Kozu (ICRR):
- Arai (ICRR):
- Travel (Week of 11/12):
- Takahashi:
- Okutomi:
- Sato:
- Lucia: 12-16
Fabian:12-16
- Mark: 12-16
- Hirata: 12-16
Enzo:12-16
- Shoda:
- Ohishi:
- Fujii: 13-16
- Tanioka:
- Tanaka:
- Kozu (ICRR):
- Arai (ICRR):
Next meeting
On 2018/11/9(Fri)