Differences between revisions 4 and 14 (spanning 10 versions)
⇤ ← Revision 4 as of 2021-07-29 21:25:17 →
Size: 5384
Editor: RyutaroTakahashi
Comment:
← Revision 14 as of 2021-07-30 14:27:11 → ⇥
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Editor: fabian.arellano
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Deletions are marked like this. Additions are marked like this.
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Participants:  Participants:
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 * IY: Range of BF damper (+/-10mm) doesn't reduce the adjustable range of FRs ([[https://www.dropbox.com/s/a8p7m6luxz6ndwn/Height%20range%20rev.pdf?dl=0|Height range]]). The height adjustment was scheduled in this week.
 * EY: The mirror was shipped to Kamioka. Schedule of installation?		  * IY: Range of BF damper (+/-10mm) doesn't reduce the adjustable range by FRs ([[https://www.dropbox.com/s/a8p7m6luxz6ndwn/Height%20range%20rev.pdf?dl=0|Height range]], [[https://www.dropbox.com/s/1xek99k96jddo6z/BFdamperV.png?dl=0|BF damper]]). The height adjustment will be scheduled in the next week.
 * EY: The mirror was transported to Kamioka. Schedule of installation?
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 * Corrugate tube fixing jig: Replaced on 7/12-13.  * Corrugate tube fixing jig: Remained jigs were replaced in EY on 7/29.
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 * Separation of rack in 2F: It was finished on 7/16.
 * New vacuum pumps for V-chambers: Problem on the support for GVs.		  * New vacuum pumps for V-chambers: GVs were implemented on 7/28-29.
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Participants:  Participants:
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 * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=17540|17540]] EX is available again , __kouseki.miyo__ 
* [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=17540|17540]] EX is available again , __kouseki.miyo__
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 * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=17369|17369]] Added EPICS channel for VIS temperature adjustment , __satoru.ikeda__   * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=17369|17369]] Added EPICS channel for VIS temperature adjustment , __satoru.ikeda__
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 * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=17481|17481]] ITMX MNH1 cable repairement , __takafumi.ushiba__   * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=17481|17481]] ITMX MNH1 cable repairement , __takafumi.ushiba__
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 * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=17588|17588]] MN OpLev alignment for ITMX , __takafumi.ushiba__   * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=17588|17588]] MN OpLev alignment for ITMX , __takafumi.ushiba__
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 * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=17406|17406]] Setup of pre-isolator , __ryutaro.takahashi__   * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=17406|17406]] Setup of pre-isolator , __ryutaro.takahashi__
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 * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=17549|17549]] Oplev hardware , __fabian.arellano__   * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=17549|17549]] Oplev hardware , __fabian.arellano__
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 * Replaced the LVDT drivers for the BF damper in IX and EX.
 * Repaired the cables in IX.
 * Setup the limit switches in IX and EX.
 * Checked the cable connections in IY and EX.
 * Preparing for the accelerometers.
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SR3

 * We measured the height of the optical table and balanced it to make it horizontal.
  * We used the laser level and measured the height at each suspension point with respect to the vertical centre of the flange.
  * We redistributed the ballast mass on top to make it horizontal.
  * The table is about 1 mm above the nominal value of 380 mm.
  * The amount of ballast mass on top is 13.84 kg.
 * We examined the cleanliness of the mirror with the new super ultra bright LED flashlight:
  * It looks very clean!
  * There a very few dust particles far away from the centre, so they're not a problem.

BS

For the O3GK paper, I revisited the calculation of the effect of DAC and coil driver noise on DARM. Because no one measured the transfer function from individual coils to DARM we cannot propagate the noise directly. However, it is possibler to calculate upper limits using the transfer functions from L, P and Y of the mirrors.
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 * PR2: Hirata-san and Yano-san confirmed the optical table is 10 mm lower than nominal.
 * PR3: They measured the height of the optical table.
 * PR3: When testing Guardian, Miyo-kun shook the mirror accidentally and it moved -3 mrad in pitch. Fortunately, it was possible to recover it with the picomotor.
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 * Type-A team:
 * Type-B team: 		  * Type-A team: ACC preparation. Height adjustment in IY.
 * Type-B team:
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 * Takahashi: 8/2-6?
 * Sato: 8/2-6?		  * Takahashi: 8/2-6
 * Sato: 8/2-6

Contents

  1. Agenda/Minutes
  2. CRY+VIS Interface Meeting
    1. Schedule
    2. Status
    3. Discussion
  3. VIS Meeting
    1. Klog
    2. Summary Report
      1. Type-A
      2. Type-B
      3. Type-Bp
      4. Type-C
      5. Electronics
      6. Control
    3. Schedule
    4. Safety
    5. Discussion
    6. Travel Plans
    7. Next meeting

Agenda/Minutes

Zoom Meeting

CRY+VIS Interface Meeting

Date: 2021/7/30 13:00-

Participants:

Post O3 Upgrade portal

Schedule

  • IX: In finalization.
  • EX: In finalization. Cable (P7-3 pin#2) should be recovered.

  • IY: Range of BF damper (+/-10mm) doesn't reduce the adjustable range by FRs (Height range, BF damper). The height adjustment will be scheduled in the next week.

  • EY: The mirror was transported to Kamioka. Schedule of installation?

Status

  • Corrugate tube fixing jig: Remained jigs were replaced in EY on 7/29.
  • TM height setting: ITMY.
  • Commissioning in air: on going in X-arm. Oplev calibration is necessary.
  • Commissioning in vacuum:
  • Overall commissioning:
  • Acceptance check: Every Friday.
  • PF actuator: After SC.
  • New vacuum pumps for V-chambers: GVs were implemented on 7/28-29.

Discussion

VIS Meeting

14:00-

Participants:

Klog

BS

  • (!) 17598 Re-cabling Dsub-15 pin for BS oplev , takaaki.yokozawa

EX

  • 17540 EX is available again , kouseki.miyo

    • 17555 Comment , kouseki.miyo

General

  • 17573 Suspension status after M4 earthquake in Hida , kouseki.miyo

  • 17582 Add [PICO] and [PICO OVERVIEW] menu to [sitemap]-[PICO] menu. , satoru.ikeda

  • 17369 Added EPICS channel for VIS temperature adjustment , satoru.ikeda

    • 17553 Comment , satoru.ikeda

IX

  • 17580 Alignment check of ITMX after the earthquake , takafumi.ushiba

  • 17588 MN OpLev alignment for ITMX , takafumi.ushiba

  • (!) 17608 Setup of limit switches , ryutaro.takahashi

  • 17481 ITMX MNH1 cable repairement , takafumi.ushiba

    • 17560 Comment , takafumi.ushiba

    • 17571 Comment , takafumi.ushiba

    • (!) 17607 Comment , ryutaro.takahashi

  • 17588 MN OpLev alignment for ITMX , takafumi.ushiba

    • 17589 Comment , takaaki.yokozawa

IY

  • 17587 Calibration of BF damper , ryutaro.takahashi

  • (!) 17602 Rebooter installation for pico motor drivers. (ITMY) , koji.nakagaki

  • 17406 Setup of pre-isolator , ryutaro.takahashi

    • 17552 Comment , ryutaro.takahashi

PRM

  • 17584 Rebooter installation and network changes for pico motor drivers. (PRM) , koji.nakagaki

SR2

  • 17549 Oplev hardware , fabian.arellano

  • (!) 17600 The oplev output viewport is dirty , fabian.arellano

  • 17549 Oplev hardware , fabian.arellano

    • 17583 Comment , fabian.arellano

    • (!) 17592 Comment , fabian.arellano

This is generated by python script in /users/Miyo/dropbox/Script/scrapping/main.py.

Summary Report

Type-A

  • Replaced the LVDT drivers for the BF damper in IX and EX.
  • Repaired the cables in IX.
  • Setup the limit switches in IX and EX.
  • Checked the cable connections in IY and EX.
  • Preparing for the accelerometers.

Type-B

SR3

  • We measured the height of the optical table and balanced it to make it horizontal.
    • We used the laser level and measured the height at each suspension point with respect to the vertical centre of the flange.
    • We redistributed the ballast mass on top to make it horizontal.
    • The table is about 1 mm above the nominal value of 380 mm.
    • The amount of ballast mass on top is 13.84 kg.
  • We examined the cleanliness of the mirror with the new super ultra bright LED flashlight:
    • It looks very clean!
    • There a very few dust particles far away from the centre, so they're not a problem.

BS

For the O3GK paper, I revisited the calculation of the effect of DAC and coil driver noise on DARM. Because no one measured the transfer function from individual coils to DARM we cannot propagate the noise directly. However, it is possibler to calculate upper limits using the transfer functions from L, P and Y of the mirrors.

Type-Bp

  • PR2: Hirata-san and Yano-san confirmed the optical table is 10 mm lower than nominal.
  • PR3: They measured the height of the optical table.
  • PR3: When testing Guardian, Miyo-kun shook the mirror accidentally and it moved -3 mrad in pitch. Fortunately, it was possible to recover it with the picomotor.

Type-C

Electronics

Control

Schedule

See Schedule

  • Type-A team: ACC preparation. Height adjustment in IY.
  • Type-B team:

Milestone

  • IMC suspensions are ready in air [40] will finish 2021/04/21.

  • PRs are ready in air [643] will finish 2021/07/09.

  • ETMX is ready in air [656] will finish 2021/08/25.

  • ITMX is ready in air [657] will finish 2021/08/31.

  • ETMY is ready in air [658] will finish 2021/09/16.

  • ITMY is ready in air [659] will finish 2021/11/08.

  • BS is ready in air [691] will finish 2021/11/24.

  • SRs are ready in air [663] will finish 2021/12/20.

  • Output suspensions are ready in air [695] will finish 2021/12/21.

  • TMSY is ready in air [708] will finish 2021/??/??.

  • TMSX is ready in air [684] will finish 2021/??/??.

2021/03/29 updated

Safety

Discussion

Travel Plans

The week from 8/2

  • Takahashi: 8/2-6
  • Sato: 8/2-6
  • Hirata: 8/2-6
  • Yano: 8/2-6
  • Ishizaki: 8/6-9? (Shift)

The week from 8/9

Next meeting

  • 2021/8/6(FRI)

KAGRA/Subgroups/VIS/VISMinutes20210730 (last edited 2021-07-31 14:16:45 by RyutaroTakahashi)