Agenda/Minutes of the VIS Meeting on 2018/1/19
2018/1/19 13:30 - 14:45
Participants:
Progress report
Schedule Chart
Type-A : (PDF/MPP)
- Type-A:
- Type-B:
Type-A (Takahashi)
Past week report
[Y-end]
- Connected the PT100 sensor for BF to the monitor system for CRY.
- Checked the yaw rotation in BF. No problem.
[X-front]
- Installed the main items (footholds, workbench, chairs, tools, etc.) into the clean booth.
- Attached the release sensors onto the end plate for DP with cabling.
- Started the assembly of side stopper. The parts for slider had a problem (too tight).
[SRM]
- Took out the IP and TF from each box.
- Found the blades (2 of 3) for TF were broken (completely cut off). The blades were removed.
- Combined the IP and the TF. Connected the IP legs with the TF plate.
- Cabled the vertical LVDT coils.
- Fixed the upper plate of LVDT-Actuator units onto the TF plate.
- Assembled the fishing rod of TF with cabling.
- Assembled the yaw rotary of receptacle in the TF.
- Packed the PI into the box.
Plan for coming weeks
- The evacuation of EYV chamber will be started in the 23th morning.
- Pre-assembly of BF damper.
- Assembly of DP stage.
Type B (Mark)
Report for week of 1/15
- We set up the QPD for the OL, initialized the OL and TM sections of the RTM, and did TFs from the TM OSEMs to the OL.
- Initially we had no coherence, but we debugged issues with the watchdog, LPCD, and DAC board and then got good TFs.
- We lifted the IM/RM/SR with the load gauge adapter and checked the weight, which was close to the mass budget.
- We installed the section of the AF above the IM, and the BF cross bars and jacks, and craned in the BF.
- We installed the BF-IRM rods, IRM, BF-IM rod, flying saucer and the cable clamps on the bottom of the BF.
- We hooked the IM section, but found it was heavy by several hundred grams. We also noticed the BF keystone had a noticeable tilt of about 1.2 mm (high on the +X side).
- We removed 738 g of trim mass and found that load rose and sat about 2 mm high. So the discrepancy is of order 500-600 g.
- Shoda-san, Enzo and Kozu-kun made and characterized a batch of OSEMs.
- Hirata-san finished drawings for the improved BS PI yaw/vertical adjustment, placed orders for damping ring receptacles and other items, and prepared the second SR BF in case we needed to swap it in.
Plan for week of 1/22
- Fix or swap BF.
- Route selected cables to flange.
- Test IM picos and BF yaw pico.
Plan for week of 1/29
- Enzo at Mitaka 1/29 and most of 1/30, then vacation.
- Kozu-kun away.
- All others at Kamioka.
- Build IRM around IM.
- Cable/test/adjust IM OSEMs.
- Time permitting, do TFs from IM OSEMs to themselves and to optical sensor.
Vacation Info
- Enzo 1/30-2/19 (at Mitaka 1/29, part of 1/30)
- Kozu-kun 1/29-2/2
Type-Bp (Shoda)
Past week report
Plan for coming weeks
OMMT & OSTM (Ohishi)
Past week report
- Hanging jig parts arrived from FCL. Some minor problems need to be fixed. Drawings will be delivered today.
- Visited machine shop of Toyama Univ. Asked them to make some mechanical parts.
Made a parts list and checked the status. Will update from time to time.
- Vertical vibration isolation bellows.
- Firstly contacted with Mirapro but they cannot make the ones we are now using. I'll contact with NIPPON VALQUA INDUSTRIES, LTD.
- Mirror status
- OMMTs will arrive soon. OSTM will be ordered next FY. Perhaps need half a year.
Plan for coming weeks
- Check hanging jig drawings.
- Assemble the hanging jig.
- Resume OSEM test.
Watchdog system (Tanaka)
Past week report
Plan for coming weeks
Other site works
- Jan. 25: Monthly inspection of the cranes (11:30 - 12:30)
- Feb 18: Black out of the Mozumi buildings
Safety
- Incidents:
- Foreseen risks
- Type-A:
- Type-B:
- Type-Bp:
Discussion
- Temperature sensors
Travel Plans
- Travel (Week of 1/22):
- Takahashi: 22 - 26
- Okutomi: 22 - 26
- Sato: 23 - 26
- Ishizaki: 23 - 26
- Mark: 22 - 26
- Fabian: 22 - 26
- Hirata: 25 - 26
- Enzo: 22 - 26
- Shoda: 22 - 26
- Ohishi:
- Fujii:
- Tanaka:
- Kozu (ICRR): 22 - 26
- Arai (ICRR): 22
- Travel (Week of 1/29):
- Takahashi: 29 - 2
- Okutomi: 29 - 2
- Sato: 29 - 2
- Ishizaki: 30 - 1
- Mark: 29 - 2
- Fabian: 29 - 2
- Hirata: 29 - 2
- Enzo:
- Shoda: 29 - 2
- Ohishi:
- Fujii:
- Tanaka:
- Kozu (ICRR):
- Arai (ICRR):
Next meeting
On 2018/1/26(Fri)