Differences between revisions 2 and 3
Revision 2 as of 2016-02-12 02:38:23
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Editor: YoichiAso
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Revision 3 as of 2016-02-12 02:48:07
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Editor: YoichiAso
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Deletions are marked like this. Additions are marked like this.
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   * 2D Drawing
   * STEP
   * Assembly image
   * Assembly STEP
   *
   * [[https://www.dropbox.com/s/l8er09c3d7lmsgr/VP5904-A_Bag%20Frame%20Assy.pdf?dl=0|2D Drawing]]
   * [[https://www.dropbox.com/s/j8rcpvytin0qft6/Bag%20Frame.stp?dl=0|STEP]]
   * [[https://www.dropbox.com/s/llu99rjj0gnesz2/Bag%20Assy.png?dl=0|Assembly image]]
   * [[javascript:void(0);/*1455212393125*/|Assembly STEP]]
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  * Mostly completed.
  * Need to buy some screws-> ordered
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  * Plates to fix the connectors on the suspension frame were ordered. -> Delivered to Mitaka
  * Coil bobin: Delivery date-> Delivered to Kamioka
Line 39: Line 34:
 * Suspension Test (Ohishi)
 * Coil winding (Takahashi)
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  * Wire breakers do not fit the plastic container.
  * Asking for quotation for a larger size, but will take some time
  * Cutting slits on the side wall of the container is another possibility. In this case, wrap the thing with a plastic bag willl be necessary for preventing dusts from coming in.
  * '''Will consult with Hirose-san about this (Tatsumi).'''
 * Coil winding (Takahashi)
  * Will be done by Ando-lab students from 2/8
  * Winding machine test status ? (Takahashi) -> Setup the machine in the clean booth. Test winding OK.
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 * 2/8-2/12: Completion of the assembly. TF measurements
 * 2/12: Packing
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 * Travel (Week of 2/8)
  * Takahashi: Mon-Wed
  * Shoda:Mon-Fri
  * Mark:
  * Fabian:
  * Okutomi:Mon-Thu
  * Fujii:Mon-Fri
  * Ishizaki:
  * Hirata:
  * Ohishi:
Line 75: Line 52:

KAGRA F2F 2/21 - 23

 * Travel (Week of 2/22)
  * Takahashi:
  * Shoda:
  * Mark:
  * Fabian:
  * Okutomi:
  * Fujii:
  * Ishizaki:
  * Hirata:
  * Ohishi:

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.

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

KAGRA F2F 2/21 - 23

  • Travel (Week of 2/22)
    • Takahashi:
    • Shoda:
    • Mark:
    • Fabian:
    • Okutomi:
    • Fujii:
    • Ishizaki:
    • Hirata:
    • Ohishi:

Other Mechanical Issues

  • 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)
  • #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.
  • #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
  • #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
    • Had a review on PR3 on Thursday - minutes, Mark's klog

    • We still need an overview diagram-> Mark will show us a draft version in the next meeting.

  • Watch dog system (Tanaka)
    • Made a prototype circuit board for checking the PCB design before ordering
    • Getting quotations for electric components
    • Will get a quotation for PCB production soon (target date is Feb 15)
  • #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
    • Contacted the company LIGO used for the possibility of buying sapphire prisms (Mark)
    • They are happy to take an order. No Japanese agent. But international order can be taken.
    • Will ask for the lead time to the company (Mark) Drawing to be sent (LIGO drawing) -> Send the drawing to the companies immediately assuming SR uses 5mm

    • Can we make the BS and SR prisms the same: Mark/Hirata klog -> Seems possible to use the same size 5mm

  • Can we make SR wire breakers bigger ?
    • We need to decide on how much to widen. Check what happens if we use 5mm tall prism on CAD (Hirata) -> Result

      • Make the slit wider by 3mm will interfere with a M5 threaded hole
        • The hole is needed to keep the mechanical rigidity
        • Can make a new M5 hole somewhere near by ?
      • 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.

  • 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.

  • New accelerometer for IP (Joris)
    • Will give a talk at an NAOJ seminar in March-> Will tell him to contact Akutsu-kun-> done

  • #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)

    • Need more frequent interaction with cryogenic people
    • Simulation task is needed. It should be the first priority
    • Blade design task is missing
    • Prioritize the tasks and make a tentative schedule by the next meeting (Takahashi)

  • Fishing rod production status (Takahashi)
    • Ordered the material for the blades.
    • Stepping motors were ordered.
    • Mechanical parts remaining to be ordered -> ordered

  • #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

Other

  • Safety
    • No incident
  • Installation procedure document
    • Many people need to contribute to the document. However, we need one person responsible for the consistency of the document.
    • BS installation document: Mark will be the editor.
    • iKAGRA PR3 installation document: Shoda will be the editor
  • #GAS blade inspection by Virgo (Takahashi)
    • Shipped the blades. Will get results in 1-2 months.

Next meeting

2015/2/12 (Fri) 13:30 -

The next F2F at Mitaka: 2/19

KAGRA/Subgroups/VIS/VISMinutes20160212 (last edited 2016-02-13 06:23:04 by YoichiAso)