Differences between revisions 5 and 6
⇤ ← Revision 5 as of 2016-02-12 03:01:39 →
Size: 8404
Editor: YoichiAso
Comment:
← Revision 6 as of 2016-02-12 03:10:10 → ⇥
Size: 7218
Editor: YoichiAso
Comment:
Deletions are marked like this. Additions are marked like this.
Line 9: Line 9:
 * Schedule status (Aso) ([[attachment:05_VIS-20160205.pdf|Chart]])  * Schedule status (Aso) ([[https://www.dropbox.com/s/y586flgsr0usmvx/05_VIS-20160212.pdf?dl=0|Chart]])
Line 68: Line 68:
 * Rotation angle of the PR3 mirror<<BR>>  * Rotation angle of the PR3 mirror
Line 136: Line 136:
  *
  * Can we make the BS and SR prisms the same: [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=718|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) -> [[attachment:wire and groove position.pdf|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) -> [[https://www.dropbox.com/sh/f5lnexvb6k9bovo/AABEYf4_C19GXYEuJZZiy7cqa?dl=0|Result]]
    * Will talk to Fukushima-san again (Hirata)
    * Wider cuts will break the horizontal balance. '''Need to check how much compensation mass is reduced. '''		   * 5mm prism [[attachment:JGW-D1604796.pdf|drawing]]
  * Problem with the groove cutting company
 * Can we make SR wire breakers bigger ?<<BR>>
  * Check what happens if we widen the slit by 3.75mm and make a new M5 (Hirata) -> [[https://www.dropbox.com/sh/f5lnexvb6k9bovo/AABEYf4_C19GXYEuJZZiy7cqa?dl=0|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).
Line 147: Line 143:
  * 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 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		   * 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 is working on 2D drawings. Will finish on Monday.
 * Bread board spring (Takahashi): Will talk to Mark after the meeting.
Line 159: Line 153:
  * Need more frequent interaction with cryogenic people
  * Simulation task is needed. It should be the first priority
  * Blade design task is missing
Line 163: Line 154:
 * Fishing rod production status (Takahashi)
  * Ordered the material for the blades.
  * Stepping motors were ordered.
  * Mechanical parts remaining to be ordered -> ordered
Line 179: Line 166:
  * '''Tell Uraguchi-san about the above plan (Takahashi)'''   * Tell Uraguchi-san about the above plan (Takahashi)
Line 186: Line 173:
  * 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
Line 197: Line 178:
2015/2/12 (Fri) 13:30 -

The next F2F at Mitaka: 2/19		 2015/2/19 (Fri) 13:30 - @ Mitaka

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

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
  • #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
  • 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

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

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