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2015/12/11 13:30 - 2015/12/11 13:30 - 16:30
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Participants:

== Schedule ==
 Participants: Shoda, Fabian, Fujii, Mark, Ohishi, Joris, Takahashi, Aso, Hirata, Tatsumi, Raffaele, Okutomi

== Schedule ==
Line 11: Line 10:
  * Latest schedule chart   * [[attachment:05_VIS-20151211.pdf|Latest schedule chart]]
Line 15: Line 14:
  * LVDT driver
  * Picomotor connection
  * Fishing rod motor
   * Will use a non-vacuum compatible D-SUB for the hanging test. -> Status		   * Suspension was dumped into the chamber: the hook of a turn backle came off while slowly sitting the suspension into the chamber. The entire chain dropped by about 1cm. With this shock, at least 1 OSEM flag in IM was broken.
  * LVDT driver: The one used at first had a broken IC. Replaced with a new board and it worked. Need to set the gains properly. Will put information into the corresponding DCC documents.
  * Picomotor connection: Worked fine.
  * Fishing rod motor: Worked fine. Pin-extracter was delivered. So the damaged vacuum compatible cable can be fixed.
  * While lowering the jacks on the inner frame, some of them seemed to have galled.

 * How to sit the suspension to the inner frame ?
  * Lift up the suspension. Remove the galled jacks.
   * Inspect the removed jacks.
  * Put new jacks.
  * Try to sit the suspension usign turn backles.
   * Use 4 slings instead of 2.
   * Carefully level the top plate.
Line 21: Line 29:
  * Finding screws and parts.
  * Cleaned some parts.

  * What can we do before the PR2 arrives
   * RM assembly
   * Traverser assembly
   * Preparation of the flags
    * Sand the Ni-plating on the magnets before gluing to increase the adhesion ?
    * '''Need to order spare flag bases: 6 of them (Takahashi) '''
Line 23: Line 40:
  * '''Takahashi will tell Hirata the proper locations of the pillars. '''
Line 25: Line 43:
  * The model is almost completed.
  * Now the digital system is working. We were able to measure transfer functions.
Line 27: Line 47:
  * Check the optimal load for the ETM BFs at the ATC: Need to be done before the end of Jan. Arrange with ATC people (Takahashi)
   * Balast mass design		   * '''Check the optimal load for the ETM BFs at the ATC: Need to be done before the end of Jan. Arrange with ATC people (Takahashi) '''
  * '''Balast mass design: Takahashi will check the design during the weekend and give (not give) an approval before Monday. '''
  * Fabian will give the design to Hirata-san on Monday.
Line 31: Line 52:

 * Traverser stop mechanism (Shoda)
  * Procurement status (Takahashi): Told Uraguchi-san about our decision. Will order the parts soon. -> Status

 * Clean work procedure
  * KAGRA should have a special meeting for clean requirements (Aso will propose to Saito-san)
  		   * Now we may move the traverser in the air a little bit.
  * Will test it at some point.

 * Traverser stop mechanism
  * Procurement status (Takahashi): Parts were ordered. Should arrive in one week.

 * Clean work procedure
  * '''Need to check with Miyoki-san when the clean suits will be delivered (Aso). '''
  * '''Ask Hirose-san about better wiping cloths (Aso). '''
  * Other clean supplies: masks,
  * KAGRA should have a special meeting for clean requirements: Aso had a meeting with Saito-san and Hirose-san. But the meeting was interrupted by a car accident. '''Will propose another meeting (Aso)'''.
  * Blowing the suspension in the assembly frame -> Need to pre-arrange the schedule with other groups.
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  * Need to give the rotation angle of the traverser top plate (Aso)   * '''Need to give the rotation angle of the traverser top plate (Aso) '''
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  * Made a cable list -> Put a link to the excel file on Wiki. Takahashi will improve the table.   * All the cables except for two cables were delivered.
   * Need to send more PTFE cable to finish the remaining two.
   * Need to send the cables used for the test hanging once it is finshed.
  * Made a cable list -> Put a link to the excel file on Wiki. '''Takahashi will improve the table. '''

 * Cable check
  * 70% done.
  * One cable found to be broken. '''Will send it back to the company (Takahashi)'''.
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  * No application so far
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  * PR3 was transported to Kamioka
  		   * PR3 ones have no crack. PR3 was transported to Kamioka
  * Use SUS wire breakers for iKAGRA mirrors ?
   * PRC mirrors will not suffer from the thermal noise
   * For SRC mirrors, we should test the sapphire wire breakers more carefully
  * Removal of the wire breakers
   * '''Mark will ask LIGO people about the procedure '''
   * '''Contact manufacuturer (Tatsumi) '''
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  * '''Hirata will order 20m more wires. '''
  * Will wash Tungsten wires too, but not yet delivered.
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  * Most of the parts were delivered.
  * ATC engineers is test assembling the winches (mostly complete)		   * Question from Akutsu-kun
  * What is the weight each drum should support -> '''Shoda will calculate '''
  * What is the wire diameter to be tested? -> 650um: Takahashi ordered 600um and 650um already. Will give 1m to ATC for the test. '''Takahashi will order some extra for 650um. '''
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  * Design status (Fabian): Do it later.
  * Order status (Takahashi): Placed an order. Will check the delivery date -> confirm (Takahashi)
  * Need to buy screws for fixing the compensation masses. Takahashi will check the lengths of screws 
  * For the RM assembly in the test hanging, SUS screws were fine (no gulling). So we will use SUS screws.
 		   * '''Design status (Fabian): Do it later. '''
  * Order status (Takahashi): Delivered. Hirata washed and sent them to Kamioka.
  * Need to buy screws for fixing the compensation masses. '''Takahashi will check the lengths of screws. '''
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  * Out sourcing: Need to send the plates to the company -> Sent 6 sets on Tue. One set remaining at the site.   * Out sourcing: 6 sets delivered washed and sent to Kamioka. Now we have all needed.
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   * We have a lot of M5x20 BUMAX screws
   * Do we need to use longer ones ? -> '''Shoda will check with the actual test mass RM'''
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  * Confirmation of the surface finish   * What to do with the dirty RMs ?: '''Check with ATC if re-polishing the rough surface is possible or not (Takahashi) '''
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   * Peel off the first contact first -> Done
   * Cabling
   * OpLev preparation
   * Hammering test
   * Test of cleaning by blowing
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   * Do we need OpLev -> Yes
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   * Peel off the first contact first -> Done
   * Practice of the suspension cleaning using the air gun
   * Inner frame modal analysis with the suspension (Takahashi)
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  * some OSEM screws (to BUMAX)

 * Next week (from 12/7) plan 		  * 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

 * Next week (from 12/14) plan
Line 95: Line 143:
   * Mon:
   * Tue:
   * Wed:
   * Thu:
   * Fri:
  * PR2
   * Mon:
   * Tue:
   * Wed:
   * Thu:
   * Fri: 		   * Mon: Replace the jacks
   * Tue: Replace the jacks
   * Wed: Cleaning test, Hammering Test
   * Thu: Cabling
   * Fri: Release the EQ stops

  * PR2
   * Mon:
   * Tue: Assemble RM
   * Wed: Put IM
   * Thu: Assemble RM carrage
   * Fri: Preparation for traverser assembly
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  * Fabian: Tue-Fri
  * Okutomi: Tue-Fri
  * Fujii: Mon(aft)-Fri
  * Ishizaki: Tue-Fri
  * Hirata:
  * Ohishi: Tue-Fri

 * Travel (Week of 12/21)
  * Takahashi: Thu-Fri
  * Shoda: Mon-Fri
  * Mark: Mon-Tue
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  * Okutomi: Tue-Fri
  * Fujii:
  * Ishizaki: Tue-Fri
  * Hirata: 		   * Okutomi: Mon-Fri
  * Fujii: Mon-Fri
  * Ishizaki:
  * Hirata:
Line 118: Line 178:
 * Travel (Week of 12/21)
  * Takahashi:
  * Shoda:
  * Mark:
  * Fabian:
  * Okutomi:
  * Fujii:
  * Ishizaki:
  * Hirata:
  * Ohishi:
Line 130: Line 179:
 
Line 132: Line 181:
Line 134: Line 182:
  * We need to decide on the plan by the end of Dec.
 		   * We will do the BS first
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  * Roadmap discussion with Ando-san
  * List of tasks for: BS, Type-A, Type-Bp modification, IMMT		   * Roadmap discussion with Ando-san (Schedule Chart)
   * DGS request. They need 3 weeks of preparation time before suspension installation.
  * List of tasks for: BS, Type-A, Type-Bp modification, IMMT. '''Make a draft list (Takahashi). Set up a Wiki page (Aso)'''
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  * Will present at an AEL meeting.
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  * Waiting for shipping information:   * Waiting for shipping information: Go the shipping address. To be shipped soon.
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  * Production of the blades of the Type-A BF: We should check the consistency of the optimal load at the TAMA prototype experiment and G&M measurements (SF and TF) (Takahashi) -> Status   * Production of the blades of the Type-A BF: We should check the consistency of the optimal load at the TAMA prototype experiment and G&M measurements (SF and TF) (Takahashi) -
   * SF: G&M 164.7kg, TAMA: 165.3kg
   * TF: G&M 276kg, TAMA: 278kg
  * No obvious reason to distrust G&M's measurements
  * Should consider in-situ measurement procedure of the optimal load during the installation of Type-A
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  * A big near miss during the suspension installation into the chamber
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2015/12/18 (Fri) 13:30 - 

Next F2F Meeting ?		 2015/12/18 (Fri) 13:30 -

Next F2F Meeting: Jan 8

VIS Meeting on 2015/12/11

2015/12/11 13:30 - 16:30

Kamioka NAOJ Room + SeeVogh

Participants: Shoda, Fabian, Fujii, Mark, Ohishi, Joris, Takahashi, Aso, Hirata, Tatsumi, Raffaele, Okutomi

Schedule

PR

  • Test Hanging Status (Takahashi)
    • Suspension was dumped into the chamber: the hook of a turn backle came off while slowly sitting the suspension into the chamber. The entire chain dropped by about 1cm. With this shock, at least 1 OSEM flag in IM was broken.
    • LVDT driver: The one used at first had a broken IC. Replaced with a new board and it worked. Need to set the gains properly. Will put information into the corresponding DCC documents.
    • Picomotor connection: Worked fine.
    • Fishing rod motor: Worked fine. Pin-extracter was delivered. So the damaged vacuum compatible cable can be fixed.
    • While lowering the jacks on the inner frame, some of them seemed to have galled.
  • How to sit the suspension to the inner frame ?
    • Lift up the suspension. Remove the galled jacks.
      • Inspect the removed jacks.
    • Put new jacks.
    • Try to sit the suspension usign turn backles.
      • Use 4 slings instead of 2.
      • Carefully level the top plate.
  • PR2 Status (Mark, Fabian)
    • Finding screws and parts.
    • Cleaned some parts.
    • What can we do before the PR2 arrives
      • RM assembly
      • Traverser assembly
      • Preparation of the flags
        • Sand the Ni-plating on the magnets before gluing to increase the adhesion ?

        • Need to order spare flag bases: 6 of them (Takahashi)

  • Location of the EQ stop pillars (Takahashi)

    • Takahashi will tell Hirata the proper locations of the pillars.

  • Digital System (Okutomi, Fujii)
    • The model is almost completed.
    • Now the digital system is working. We were able to measure transfer functions.
  • BF Optimal Weight (Takahashi)

    • Check the optimal load for the ETM BFs at the ATC: Need to be done before the end of Jan. Arrange with ATC people (Takahashi)

    • Balast mass design: Takahashi will check the design during the weekend and give (not give) an approval before Monday.

    • Fabian will give the design to Hirata-san on Monday.
  • Traverser actuation check (Shoda)
    • Now we may move the traverser in the air a little bit.
    • Will test it at some point.
  • Traverser stop mechanism
    • Procurement status (Takahashi): Parts were ordered. Should arrive in one week.
  • Clean work procedure

    • Need to check with Miyoki-san when the clean suits will be delivered (Aso).

    • Ask Hirose-san about better wiping cloths (Aso).

    • Other clean supplies: masks,

    • KAGRA should have a special meeting for clean requirements: Aso had a meeting with Saito-san and Hirose-san. But the meeting was interrupted by a car accident. Will propose another meeting (Aso).

    • Blowing the suspension in the assembly frame -> Need to pre-arrange the schedule with other groups.

  • PR CAD model and assembly drawings (Hirata)

    • Need to give the rotation angle of the traverser top plate (Aso)

  • Cable status (Takahashi)
    • All the cables except for two cables were delivered.
      • Need to send more PTFE cable to finish the remaining two.
      • Need to send the cables used for the test hanging once it is finshed.

    • Made a cable list -> Put a link to the excel file on Wiki. Takahashi will improve the table.

  • Cable check
    • 70% done.

    • One cable found to be broken. Will send it back to the company (Takahashi).

  • Call for shift for assembly help (Takahashi)
    • Made a call for shift for helping the installation works
    • No application so far
  • PR2 gluing schedule (Tatsumi)
    • PR2 wire breakers have cracks
    • PR3 ones have no crack. PR3 was transported to Kamioka
    • Use SUS wire breakers for iKAGRA mirrors ?
      • PRC mirrors will not suffer from the thermal noise
      • For SRC mirrors, we should test the sapphire wire breakers more carefully
    • Removal of the wire breakers

      • Mark will ask LIGO people about the procedure

      • Contact manufacuturer (Tatsumi)

  • Wire cleaning
    • Damaged one wire

    • Hirata will order 20m more wires.

    • Will wash Tungsten wires too, but not yet delivered.
  • Production of additional PR winches (Akutsu)
    • Question from Akutsu-kun

    • What is the weight each drum should support -> Shoda will calculate

    • What is the wire diameter to be tested? -> 650um: Takahashi ordered 600um and 650um already. Will give 1m to ATC for the test. Takahashi will order some extra for 650um.

  • RM compensation mass

    • Design status (Fabian): Do it later.

    • Order status (Takahashi): Delivered. Hirata washed and sent them to Kamioka.

    • Need to buy screws for fixing the compensation masses. Takahashi will check the lengths of screws.

  • RM EQ stop screw position (Takahashi)
    • Out sourcing: 6 sets delivered washed and sent to Kamioka. Now we have all needed.
  • PR Optical Bench (Akutsu)
    • For PR2, we do need to raise the optical bench.
      • Delivery date for the screws: Dec. 21
      • PR2 vacuum installation will be Jan. 19
  • OSEM assembly status (Akutsu)

    • 7 OSEMs sent to Kamioka http://klog.icrr.u-tokyo.ac.jp/osl/?r=431

    • OSEM screw length issue
      • We have a lot of M5x20 BUMAX screws

      • Do we need to use longer ones ? -> Shoda will check with the actual test mass RM

  • RM production (Takahashi)

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

  • Test hanging vacuum installation
    • What needs to be done when the suspension is inside the chamber ?

      • Peel off the first contact first -> Done

      • Cabling

      • OpLev preparation

      • Hammering test
      • Test of cleaning by blowing
      • Transfer function measurement
      • Spectrum
      • Check the orientation of the mirror
      • Check the height with laser marker
  • List of what should be changed for PR3 hanging
  • Next week (from 12/14) plan
    • Test hanging
      • Mon: Replace the jacks
      • Tue: Replace the jacks
      • Wed: Cleaning test, Hammering Test
      • Thu: Cabling
      • Fri: Release the EQ stops
    • PR2
      • Mon:
      • Tue: Assemble RM
      • Wed: Put IM
      • Thu: Assemble RM carrage
      • Fri: Preparation for traverser assembly
  • Travel (Week of 12/14)
    • Takahashi: Mon-Thu
    • Shoda: Mon-Fri
    • Mark: Tue-Thu(AM)
    • Fabian: Tue-Fri
    • Okutomi: Tue-Fri
    • Fujii: Mon(aft)-Fri
    • Ishizaki: Tue-Fri
    • Hirata:
    • Ohishi: Tue-Fri
  • Travel (Week of 12/21)
    • Takahashi: Thu-Fri
    • Shoda: Mon-Fri
    • Mark: Mon-Tue
    • Fabian: Mon-Fri
    • Okutomi: Mon-Fri
    • Fujii: Mon-Fri
    • Ishizaki:
    • Hirata:
    • Ohishi:

* Joris: 12/7 - 12/18

BS

  • What to do with BS after iKAGRA (Aso)
    • We will do the BS first
  • 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)
  • BS clean bag (Aso)

ETM

  • ETM assembly frame (Aso)
    • Waiting for quotation from Mirapro (sent a reminder)
    • Optical table was ordered: delivery date 1/19

Other

  • bKAGRA preparation
    • Roadmap discussion with Ando-san (Schedule Chart)
      • DGS request. They need 3 weeks of preparation time before suspension installation.

    • List of tasks for: BS, Type-A, Type-Bp modification, IMMT. Make a draft list (Takahashi). Set up a Wiki page (Aso)

  • Watch dog system (Tanaka)
    • Will present at an AEL meeting.
  • GAS blade inspection by Virgo (Takahashi)
    • Waiting for shipping information: Go the shipping address. To be shipped soon.
  • Request to the ATC for the next year

    • Production of the blades of the Type-A BF: We should check the consistency of the optimal load at the TAMA prototype experiment and G&M measurements (SF and TF) (Takahashi) -

      • SF: G&M 164.7kg, TAMA: 165.3kg

      • TF: G&M 276kg, TAMA: 278kg

    • No obvious reason to distrust G&M's measurements

    • Should consider in-situ measurement procedure of the optimal load during the installation of Type-A
  • Safety at the site (Takahashi, Ishizaki)
    • A big near miss during the suspension installation into the chamber

Next meeting

2015/12/18 (Fri) 13:30 -

Next F2F Meeting: Jan 8

KAGRA/Subgroups/VIS/VISMinutes20151211 (last edited 2015-12-13 18:25:48 by YoichiAso)