Agenda/Minutes of the VIS Meeting on 2016/6/24
2016/6/24 13:30 - 15:00 @ Room 210
Participants:
Progress report
Type-A (Takahashi)
- Simulation
Deadline is the end of June (Okutomi)
5 blades for BF -> "The filters in Virgo are different from the GAS filters (no compression). 3 + 2 combination is no problem." (by E. Majorana)
Type-B (Mark)
- Type B Past Week Summary
- Mark and Fabian worked at Kamioka:
- All the parts for the security structure were located. The clamp pieces for the IM are being taken back to Mitaka to have extra screw holes added.
- The BS/PR2/SR2 area was cleaned and tidied to allow floor removal and assembly frame construction.
- 21 "Type 1" cables (PI-Flange, Signal) and 15 "Type 5" cables (OSEM) were tested. They all passed. Sufficient tested "Type 2" cables (PI-Flange, Motor) were located in the PR3 area.
- Hirata-san worked on the Inventor assembly, adding views (originally defined by Mark) of the different phases of construction.
- Hirata-san shipped 7 SFs and some parts to Kamioka.
- Hirata-san made assembly drawings of the damper rings and cable clamps for SR.
- Hirata-san liaised with Mirapro about the frame assembly.
- Mark and Fabian worked at Kamioka:
- Type B ongoing issues
- Wires
- Need to decide RM wire thickness and order BS and RM wires. Lead time is a few days from Nilaco.
- OSEMs
- Akutsu-san is working to get wide-mouth OSEMs
Longer cables for BF->PI and SF->PI.
- Takahashi-san has ordered extra connectors (due any day) and will get a company to make the cables.
- Feedthrough Adapters
- Need large quantity of male and female D-Sub 9, IDC ribbon connectors - Takahashi-san is getting a quote.
- Can we make SR wire breakers bigger?
- Fukushima-san will start on machining test soon (as of 5/27).
- Installation stuff
- Crane scale - RECEIVED
- Ballast masses for payload
- Initial batch received - ordered extra smaller ones to allow for adjustments.
- Lower breadboard stuff
- Installation to be incorporated into the procedure document. Mark/Takahashi to discuss.
- Breadboard springs (in manufacture, expected end of July)
- Nail-head parts: quote from Mirapro received, not urgent, will be combined with assembly frame order.
- Documents
BS Assembly Procedure E1504235, E1504235 draft
- Wires
Type-Bp (Shoda)
Designed the additional masses for the IM JGWdoc(Shoda)
Created the 3D model of the vacuum tank with the PR suspensions also for PR2, 3, and M. Sectional View of PRs(Shoda)
- Checked if the suspension parts clip any beams. Found the POX and POY beams are clipped at the RM. (Shoda)
Ckecked also the OpLev beam path inside the chamber except for PR2. Found that we cannot have the OpLev beam spot at the center of the PR3 optic. SVN(Shoda)
Summarized the information of iKAGRA PR3 measurement. Report(Fujii)
- Now comparing the simulation and the measurement.
- Design for the modification of the optical bench suspension points is on going. (Shoda)
- We need the additional machining at the intermediate stage of the optical bench.
- Design for the installation jigs for the optical bench is on going. (Shoda)
- Detailed simulation for the modified Type-Bp is on going. (Fujii)
- Created the Type-Bp model in both the SUMCON and simulink.
- Checked the almost all the modes are damped within 1 min.
- Design for the control filters are on going.
- I asked Kasuya-san @ Somiya group to join the Type-Bp installation. And she agrees. How far she will be involved is under discussion.
IMMT (Ohishi)
- Put a report here
Watchdog system (Tanaka)
I'm working on experiment for stability of PhotoMos Relay.
- (I will be reported at the next meeting(Maybe..).
Safety
- Any issue ?
Issues
- LVDT for BF damping (Shoda, Raffaele)
- Will have a meeting with Virgo on 6/27 from 4PM
- Available size around the BFs (Shoda, Sato)
- Length to pitch coupling simulation (Okutomi)
- Dummy payloads for Type-A (Takahashi, Aso)
- Dummy payload interferometer: unlikely to happen
- Need to think about how to test the Type-A performance without Michelson.
Site work plan for the next week
Mon:Mark and Fabian for BS preparation.
- Tue: Mark and Fabian for BS preparation.
- Wed: Mark and Fabian for BS preparation.
- Thu: Mark and Fabian for BS preparation.
- Fri: Mark and Fabian for BS preparation.
Travel Plans
- Travel (Week of 6/27)
- Takahashi:
- Shoda:
Mark:27 - 7/1
- Fabian: 27 - 7/1
- Okutomi:
- Fujii: 27-29
- Ishizaki:
- Hirata:
- Ohishi:
- Sato:
- Travel (Week of 7/4):
- Takahashi: 5-7 (site check for the installation of Type-A)
- Shoda:
Mark:4-7? (preparation for BS installation)
Fabian:4-8? (preparation for BS installation)
- Okutomi:
- Fujii:
Ishizaki:5-7 (site check for the installation of Type-A)
- Hirata:
- Sato: 5-7 (site check for the installation of Type-A)
- Ohishi:
Mark is away: July 8-20
Next meeting
2016/7/1(Fri) 13:30 -
Next F2F 7/8