Differences between revisions 1 and 5 (spanning 4 versions)
⇤ ← Revision 1 as of 2016-01-08 05:13:34 →
Size: 6726
Editor: YoichiAso
Comment:
← Revision 5 as of 2016-01-08 05:23:41 → ⇥
Size: 6788
Editor: YoichiAso
Comment:
Deletions are marked like this. Additions are marked like this.
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  * Latest schedule chart
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  * Connector for the coil driver input is D9 whereas the output from the HP coil driver is D15.
    * Will discuss with AEL for the permanent solution at the next AEL meeting (1/12)		    * Connector for the coil driver input is D9 whereas the output from the HP coil driver is D15.
   * Will discuss with AEL for the permanent solution at the next AEL meeting (1/12)
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   * PR3: 0.786deg counter clockwise from the line connecting the centers of the PR3 and BS chambers.     * PR3: 0.786deg counter clockwise from the line connecting the centers of the PR3 and BS chambers.
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  * Need to send more PTFE cable to finish the remaining two -> Will do it first thing in the next year
   * Need to send the cables used for the test hanging once it is finished. -> Will send them once the test hanging is disassembled.		   * Need to send more PTFE cable to finish the remaining two -> Will do it first thing in the next year
  * Need to send the cables used for the test hanging once it is finished. -> Will send them once the test hanging is disassembled.
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   * Tue: 
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  * Takahashi: 
  * Shoda: 
  * Mark: 
  * Fabian: 
  * Okutomi: 
  * Fujii: 		   * Takahashi:
  * Shoda:
  * Mark:
  * Fabian:
  * Okutomi:
  * Fujii:
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  * Takahashi: 
  * Shoda: 
  * Mark: 		   * Takahashi:
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  * Mark:
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  * Okutomi: 
  * Fujii: 		   * Okutomi:
  * Fujii:
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  * Task list (Takahashi)   * [[attachment:Task for bKAGRA.xls|Task list]] (Takahashi)
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  * Electronics diagram and review
   * Aso will make a template drawing and send it to Takahashi -> TBD		   * Electronics diagram and review
   * [[attachment:20151225_081424000_iOS.png|A diagram from Shoda]]
   * Need to assign a person to make an overview diagram
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 * Installation procedure document
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  * If we can get help from ATC to measure the optimal load in Mitaka, it will be good.
   * Takahashi will make a plan for the optimal load check and ask ATC.-> not yet. Will make one in the first week of Jan.
   * If we can get help from ATC to measure the optimal load in Mitaka, it will be good.
  * Takahashi will make a plan for the optimal load check and ask ATC.-> not yet. Will make one in the first week of Jan.
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2015/1/15 (Fri) 13:30 -   2015/1/15 (Fri) 13:30 -

VIS Meeting on 2016/1/8

2015/12/25 13:30 -

Kamioka TV conference room + SeeVogh

Participants: Fabian, Fujii, Shoda, Aso, Hirata, Takahashi, Ishizaki, Ohishi, Tatsumi, Okutomi

Schedule

  • Schedule status (Aso)

PR

  • Test Hanging Status (Takahashi)
    • Transfer function measurements (Shoda)
    • Mirror orientation confirmation (Takahashi)
    • LVDT distributor problem
      • Connector for the coil driver input is D9 whereas the output from the HP coil driver is D15.
      • Will discuss with AEL for the permanent solution at the next AEL meeting (1/12)
    • The frame for the clean bag is bent. We cannot remove the nut. Probably we need to cut the rod once we take the suspension out of the chamber. Need to prepare a replacement rod (Aso)
  • PR2 Status (Mark, Fabian)
  • Location of the EQ stop pillars (Takahashi)
    • Locations were reported by Takahashi

      • Interference with OpLev (Akutsu) -> Status ?

  • Digital System (Okutomi, Fujii)
  • BF Optimal Weight (Takahashi)

    • Check the optimal load for the ETM BFs at the ATC -> Status

    • Balast mass design: Incorporating Fabian's model to the assembly model. Now making a drawing. Should ask for quotation to companies first thing in the next year (Hirata) -> Status

  • Traverser actuation check (Shoda)
  • Traverser stop mechanism
    • Parts were sent to Kamioka. Who will assemble it ?
  • Clean work procedure
    • Order clean wipes (Aso)

    • KAGRA should have a special meeting for clean requirements: Will propose another meeting. (Aso)

  • PR CAD model and assembly drawings (Hirata)
    • Aso calculated the rotation angle
      • PR3: 0.786deg counter clockwise from the line connecting the centers of the PR3 and BS chambers.
      • Will make a report soon.
  • Cable status (Takahashi)

    • Need to send more PTFE cable to finish the remaining two -> Will do it first thing in the next year

    • 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

    • 70% done -> Contact Liu-kun and Kawamura-san for another shift (Takahashi)

    • One cable found to be broken. Will send it back to the company -> not yet. Send it together with the other cable related items.

  • Call for shift for assembly help (Takahashi)

    • Made a call for shift for helping the installation works -> Contact people who did VIS shifts in the past.

  • PR2 wire breaker problem (Mark, Tatsumi)
    • Prism removal status (Mark)
    • SUS wire breaker order status (Takahashi).
      • For BS prisms, should we ask the company which made LIGO prisms ?
        • We should first ask LIGO about the company (Mark ?)
        • Compare the size of the prisms of LIGO and KAGRA (Mark ?)
      • Can we make SR wire breakers bigger ? Check with the CAD model (Hirata)
  • Wire cleaning (Hirata)

    • Hirata will order 20m more wires. -> Delivered. Will wipe in the next week. -> Working on it. Will finish it on 1/4.

    • Will wash Tungsten wire delivery status -> Delivered. Will wipe in the next week -> Working on it. Will finish it on 1/4.

  • Production of additional PR winches (Akutsu)
    • Shipping status (Takahashi, Hirata)
  • OSEM assembly status (Akutsu)
  • RM production (Takahashi)

    • What to do with the dirty RMs ?: Check with ATC if re-polishing the rough surface is possible or not (Takahashi) -> status

  • List of what should be changed for PR3 hanging

  • Missing items(to be purchased soon)

    • Picomotor drivers (Takahashi) -> Got a quotation. Will order soon.

    • Signal generators for LVDTs (Aso) -> Ordered. Will be delivered very soon.

    • Serial-Ethernet converter: 7 more (Shoda) -> Ishizaki-san ordered them. Delivery 1/14.

    • Traverser motor driver (Shoda) -> Will discuss Uraguchi-san. Need a box for stepping motor driver.

    • Turn backles (bigger and eye). Smaller shackles. (Aso) -> Ishizaki-san ordered. Delivery may be 1/18

  • Next week (from 1/12) plan
    • Test hanging
      • Mon: holiday
      • Tue:
      • Wed:
      • Thu:
      • Fri:
    • PR2
      • Mon:
      • Tue:
      • Wed:
      • Thu:
      • Fri:
  • Travel (Week of 1/12)
    • Takahashi:
    • Shoda:
    • Mark:
    • Fabian:
    • Okutomi:
    • Fujii:
    • Ishizaki:
    • Hirata:
    • Ohishi:
  • Travel (Week of 1/18)
    • Takahashi:
    • Shoda:
    • Mark:
    • Fabian:
    • Okutomi:
    • Fujii:
    • Ishizaki:
    • Hirata:
    • Ohishi:

* Joris: 1/11-1/29

* 1/18 Sekiguchi-kun's PhD defense

BS

  • BS Assembly Frame Design (Aso, Hirata)
  • BS flag design (Mark, Fabian)
  • BS gluing jigs (Tatsumi)
  • Not enough crane height problem (Hirata, Saito)
  • IP base clamp (Fabian)
  • Bread board spring (Takahashi)
    • Need a review: Show the design at the next F2F VIS meeting (Takahashi)
  • BS clean bag (Aso)

ETM

  • Preparation tasks
    • Prepare missing parts
      • Check what are missing
      • Get quotation
      • Order the missing parts
      • Wind coil wires
      • Check coils
    • Disassemble the suspensions at Mitaka
    • Wash the suspension parts
    • Send the parts to Kamioka
    • Assemble the suspensions at Kamioka
      • Transfer function check ?
    • Send PRMs to Kamioka
      • Drag wipe at Mitaka
      • First contact ?
      • Container ?

Other

  • bKAGRA preparation
  • Electronics
    • Electronics diagram and review
    • What are necessary in the next few weeks ?
  • Installation procedure document
  • Watch dog system (Tanaka)
    • Will present at an AEL meeting on 1/12
  • GAS blade inspection by Virgo (Takahashi)
    • Shipped the blades. Will get results in 1-2 months.
  • Type-A Filters Optimal Load Measurements
    • If we can get help from ATC to measure the optimal load in Mitaka, it will be good.

    • Takahashi will make a plan for the optimal load check and ask ATC.-> not yet. Will make one in the first week of Jan.

    • 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) -> Asking for quotation.

      • How to test it ?

        • Use the unused assembly frame for Type-B ? -> Takahashi will make a plan.

  • Safety at the site (Takahashi, Ishizaki)

Next meeting

2015/1/15 (Fri) 13:30 -

KAGRA/Subgroups/VIS/VISMinutes20160108 (last edited 2016-01-10 06:51:57 by YoichiAso)