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| * [[javascript:void(0);/*1455212393125*/|Assembly STEP]] | * [[https://www.dropbox.com/s/zsrizfnzx9xuovp/Bag%20Assy.stp?dl=0|Assembly STEP]] |
VIS Meeting on 2016/2/12
2015/2/12 13:30 -15:00
Kamioka TV conference room + SeeVogh
Participants:
Schedule
Schedule status (Aso) (Chart)
PR3
- PR3 Installation Status (Takahashi)
- Wire breaker slit problem
#Traverser repair: Repair of the broken ones at Mitaka -> Uraguchi-san is working on it.
#Screws to fix the front and back rings the RM were too long, or the tapping in the holes were too short. Couldn't use M5x40. Ordered M5x35 with vent holes. -> Delivered. Remember to replace them
- The frame for the clean bag is bent.
- Reinformcement design by Mirapro
Plan for the next week
- Mon: Hang the mirror
- Tue: Hang RM, Cabling
- Wed: RM alignment, Signal check of OSEMs
- Thu: Set the top plate on the assembly frame
- Fri: Hang IM
iKAGRA ETM suspension
- Assembly of the suspension (Ohishi)
- Missing parts (Tatsumi, Takahashi)
Insulation tubes for picomotor connectors -> ordered
- Suspension Test (Ohishi)
- Coil winding (Takahashi)
- PRM transportation (Tatsumi)
Plan for the next week
Travel Plans
- Travel (Week of 2/15)
Takahashi:Mon-Thu
Shoda:Mon-Thu
- Mark:
- Fabian:
Okutomi:Mon-Thu
Fujii:Mon-Thu
- Ishizaki:
- Hirata:
- Ohishi:
- Sekiguchi: Mon-Thu
VIS F2F 2/19
KAGRA F2F 2/21 - 23
- Travel (Week of 2/22)
- Takahashi:
- Shoda:
- Mark:
- Fabian:
- Okutomi:
- Fujii:
- Ishizaki:
- Hirata:
- Ohishi:
Other Mechanical Issues
- Rotation angle of the PR3 mirror
- 0.786deg counter clockwise from the line connecting the centers of the PR3 and BS chambers.
0.619deg counter clockwise with respect to the chamber (schematic)
- #Wire winches
- Now in the ATC clean room.
- Asked Ikenue-san to repair it (Takahashi)
- #Clean work procedure
- Will be discussed at F2F.
- #BF Optimal Weight (Takahashi)
- #Balast masses: Delivered to Mitaka. Will send them to Kamioka (Hirata)
- #IM wire clamps
- #Need to send the wire clamps used for the test hanging to I-ject: it was sent to I-ject (Takahashi)
- #Traverser actuation check (Shoda)
- #Wire cleaning (Hirata)
Hirata will order 20m more wires. -> Delivered. Will wipe in the next week. -> Finished. Will send to Kamioka soon.
Will wash Tungsten wire delivery status -> Delivered. Will wipe in the next week -> Finished. Will send to Kamioka soon.
- #Production of additional PR winches (Akutsu)
Shipping status (Takahashi, Hirata) -> Wrapped. Will be shipped with IP in the next week.
- #OSEM assembly status (Akutsu)
- #List of what should be changed for PR3 hanging
- People should share ideas whenever they come up with missing thigns.
- Shoda made a spread sheet for keep tracking the ideas
https://docs.google.com/spreadsheets/d/1zZaLObWjDSEOTrr85Hz0ApXxEUChK3xJ_chk0f7r5nY/edit?usp=sharing
- All the items are now done or being taken care of
- #Missing items(to be purchased soon)
#Traverser motor driver (Shoda) -> Will discuss Uraguchi-san. Need a box for stepping motor driver. -> These are for PR2. Will be ordered sometime.
Electronics
- What are necessary in the next few weeks ?
- Nothing
- Electronics diagram and review
Mark's diagram
- Watch dog system (Tanaka)
- #LVDT distributor connector problem
Miyakawa-san circulated a design of the conversion cable (D9-D15): drawing
- #Digital System (Okutomi, Fujii)
- #Cable status (Takahashi)
Need to send more PTFE cable to finish the remaining two -> Will do it in the next week
Need to send the cables used for the test hanging once it is finished. -> Will send them once the test hanging is disassembled.
- #Cable check
- Liu-kun Zhao-kun finished checking all the cables. They found another broken cable.
- Will send the broken cables together with the other cable related items (Takahashi).
bKAGRA preparation
- Three big categories of the tasks
- Type-A: Leader = Takahashi: Task list, team members
- Type-B (BS and SRC): Leader = Mark: Task list, team members
- Type-Bp modification: Continue discussion (Aso, Raffaele)
Common Issues
BS and SR
Task listKAGRA/Subgroups/VIS/TypeB/TaskList
- Kick off meeting within February (Mark)
- BS prism preparation (Mark)
5mm prism drawing
- Problem with the groove cutting company
Can we make SR wire breakers bigger ?
Check what happens if we widen the slit by 3.75mm and make a new M5 (Hirata) -> Result
- Will talk to Fukushima-san again (Hirata)
- Wider cuts will break the horizontal balance. Need to check how much compensation mass is reduced (Hirata).
- Flag design (Mark)
Mark will sort out the ideas and organize a specialized meeting.-> will present an updated version in the next meeting.
IP base clamp (Fabian): Picture -> Reduce the number of clamps-> Hirata-san is working on 2D drawings. Will finish on Monday.
- Bread board spring (Takahashi): Will talk to Mark after the meeting.
- #BS Assembly Frame Design (Aso, Hirata)
- #BS gluing jigs (Tatsumi)
- #Not enough crane height problem (Hirata, Saito)
- #BS clean bag (Aso)
Type A
Task list (Takahashi)
Prioritize the tasks and make a tentative schedule by the next meeting (Takahashi)
- #Type-A Filters Optimal Load Measurements
#Takahashi will make a plan for the optimal load check and ask ATC.-> Check two filters per month from April 2016. -> Will be presented to the ATC steering committee.
- #How to manufacture the long maraging wires ?
- One prototype was machined by Ojima
Aoshima can do the heat treatment for the long rod. Will ask them soon (Takahashi) -> Still waiting for a quotation.
- How to test it ?
- We can use the prototype assembly frame in TAMA.
Type-Bp modification
- PRM traverser
- Postpone the production to the next FY until we know the details of the modification.
- Tell Uraguchi-san about the above plan (Takahashi)
- #PR2 Wire breaker problem
- Prism removal from PR2 (Hirose, Mark)
- Not yet ready
- Prism removal from PR2 (Hirose, Mark)
Other
- Safety
- #GAS blade inspection by Virgo (Takahashi)
- Shipped the blades. Will get results in 1-2 months.
Next meeting
2015/2/19 (Fri) 13:30 - @ Mitaka