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Size: 7757
Comment:
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Size: 5887
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
| Line 12: | Line 12: |
| * PR3 Installation Status (Takahashi)<<BR>> | * PR3 Installation Status (Takahashi) |
| Line 16: | Line 16: |
| * Crane may not be available on 2/25 for the crane upgrade to remote control. | * Pre-installation cleaning of the suspension * Vacuum cleaner ? * Wiper * Ethanol * Crane will not be available on 2/25 in the morning for the crane upgrade to remote control. |
| Line 54: | Line 58: |
| * 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 ([[https://www.dropbox.com/s/073wcbz652i016a/VM5920_KAGRA真空容器PR3_Type-Bp.pdf?dl=0|schematic]]) * Currently the mirror is rotated by 0.65deg (measured at the time of the test hanging). * This is well within the actuation range of the traverser. -> Will not make any further adjustment. * #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. |
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| Line 94: | Line 76: |
| * Electronics diagram and review | * Watch dog system (Tanaka) * #Electronics diagram and review |
| Line 97: | Line 81: |
| * Need to make Guradian script for PR3. Shoda + Fujii and Okutomi will write one after the mechanical installation is finished. * Watch dog system (Tanaka) * #LVDT distributor connector problem * Miyakawa-san circulated a design of the conversion cable (D9-D15): [[attachment:ESB-K003-G004-01A.pdf|drawing]] |
* #Need to make Guradian script for PR3. Shoda + Fujii and Okutomi will write one after the mechanical installation is finished. |
| Line 104: | Line 84: |
* #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). |
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| Line 140: | Line 111: |
| * Shorter flag is desirable ? * Mark will sort out the ideas and organize a specialized meeting.-> will present an updated version in the next meeting. * IP base clamp (Fabian): [[attachment:image.png|Picture]] -> Reduce the number of clamps-> Hirata-san finished 2D drawings. Trying to get quotation now. |
* [[attachment:kagraseis01414flagredesign.zip|Mark's drawings]] * BS dummy optics design (Fabian) * http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4811 * IP base clamp (Fabian): Reduce the number of clamps-> Hirata-san finished 2D drawings. Trying to get quotation now. |
| Line 161: | Line 133: |
| * 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) -> done * #PR2 Wire breaker problem |
* PR2 Wire breaker problem |
| Line 166: | Line 135: |
| * Not yet ready | * We need to send the spare mirror and the containers back to Kashiwa soon. |
| Line 176: | Line 145: |
| 2015/2/19 (Fri) 13:30 - @ Mitaka | 2015/2/26 (Fri) ? |
VIS Meeting on 2016/2/19
2015/2/19 13:30 -
Room 210
Participants:
Schedule
Schedule status (Aso) (Chart)
PR3
- PR3 Installation Status (Takahashi)
- Current status
- The frame for the clean bag is bent.
- Mirapro will come on 22nd to make changes.
- Pre-installation cleaning of the suspension
- Vacuum cleaner ?
- Wiper
- Ethanol
- Crane will not be available on 2/25 in the morning for the crane upgrade to remote control.
Plan for the next week
- Mon: F2F
- Tue: F2F
- Wed: Vacuum installation preparation
- Thu: Vacuum installation
- Fri: Post-vacuum installation work
iKAGRA ETM suspension
- Current status (Ohishi)
Travel Plans
- Travel (Week of 2/22)
Takahashi:Wed - Thu (Fri: Akeno for the acceptance of IP from NIKHEF)
Shoda:Wed - Fri
- Mark:
- Fabian:
Okutomi:Wed - Fri
Fujii:Wed - Fri
- Ishizaki:
- Hirata:
- Ohishi:
KAGRA F2F 2/21 - 23
- Travel (Week of 2/29)
- Takahashi:
- Shoda:
- Mark:
- Fabian:
- Okutomi:
- Fujii:
- Ishizaki:
- Hirata:
- Ohishi:
Other Mechanical Issues
- #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
- Watch dog system (Tanaka)
- #Electronics diagram and review
Mark: detailed schematics nearly ready to post - D1503615 (full PR3), D1604795 (iKAGRA PR3)
Mark: started overview schematic diagram,
- #Need to make Guradian script for PR3. Shoda + Fujii and Okutomi will write one after the mechanical installation is finished.
- #Digital System (Okutomi, Fujii)
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
Type-B
Task listKAGRA/Subgroups/VIS/TypeB/TaskList
- Kick off meeting within February (Mark)
- BS prism preparation (Mark)
5mm prism drawing
- Confirmed with Hirata-san that BS can use same 5 mm prism as SR (grooves, wire clearance all OK).
- Confirmed with Tatsumi-san that not a big deal to use smaller BS prism as long as secondary position not changed.
- Submitted 5 mm prism drawing to company that did LIGO HSTS prism (except grooves), waiting on response.
- Second company that did LIGO groove cutting not interested in quoting - exploring other US companies.
- Should contact Shinko-sha again (Takahashi)
- 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
- Two concerns
- The rework may bend the wing shaped parts.
- The P.C.D. of the new screw holes may not coincide exactly with the other existing holes
- Consult with Fukushima-san again. Takahashi will contact Fukushima-san
Do we need to widen the slits for PRC RMs ? -> Depends on how difficult it is to rework the RM.
Wider cuts will break the horizontal balance. Need to check how much compensation mass is reduced (Hirata) -> 2mm reduction will be necessary. We can do this.
- Two concerns
- Flag design (Mark)
- BS dummy optics design (Fabian)
IP base clamp (Fabian): Reduce the number of clamps-> Hirata-san finished 2D drawings. Trying to get quotation now.
- Bread board spring (Takahashi): Hirata-san is getting quotations.
- #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)
- #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
- PR2 Wire breaker problem
- Prism removal from PR2 (Hirose, Mark)
- We need to send the spare mirror and the containers back to Kashiwa soon.
- Prism removal from PR2 (Hirose, Mark)
Other
- Safety
- No incident
- #GAS blade inspection by Virgo (Takahashi)
- Shipped the blades. Will get results in 1-2 months.
Next meeting
2015/2/26 (Fri) ?