Differences between revisions 1 and 17 (spanning 16 versions)
⇤ ← Revision 1 as of 2021-07-21 09:02:23 →
Size: 7618
Editor: KousekiMiyo
Comment:
← Revision 17 as of 2021-07-31 14:13:00 → ⇥
Size: 7490
Editor: RyutaroTakahashi
Comment:
Deletions are marked like this. Additions are marked like this.
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Date: 2021/7/16 13:00-13:35 Date: 2021/7/30 13:00-13:50
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Participants: Takahashi, Node, Ikeda, Ushiba, Tomaru, Sato, Aso, Kimura, Miyo Participants: Takahashi, Ikeda, Kimura, Sato, Ushiba, Tomaru, Aso, Yokozawa, Hirata, Miyo, Node
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 * IX: Still some cabling from payload have problems. To the finalization.
 * EX: Aligned for the green beam again. To the finalization
 * IY: F1 was recovered. Adjustable range of F0 was extended ([[https://www.dropbox.com/s/a8p7m6luxz6ndwn/Height%20range%20rev.pdf?dl=0|Height range]]). Range of BF damper should be taken into account. The height adjustment was scheduled in the week of 7/26.
 * EY: Mirror cleaning was almost finished. The shipping will be in the next week (transported after holidays).		  * IX: In finalization. Problem on cables (unbalance, coupling?).
 * 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 ([[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. FC was extended to the magnet. Regluing might be needed. Installation will be started in the next week.
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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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 * Commissioning in air: on going in X-arm. Oplev calibration is necessary.  * Commissioning in air: on going in X-arm. Oplev calibration in IX will be finished on 8/2. That in EX will be done after the CAL alignment.
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 * PF actuator: After SC.
 * Separation of rack in 2F: It was finished on 7/16.
 * New vacuum pumps for V-chambers: Problem on the support for GVs.		  * PF actuator: At the in-vacuum commissioning.
 * New vacuum pumps for V-chambers: GVs were implemented on 7/28-29.
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 * Operators to ALIGN the suspensions are necessary.
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14:00-14:20 14:00-14:30
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Participants: Takahashi, Miyo, Terrence, Sato, Fabian, Aso, Tanaka, Ishizaki Participants: Takahashi, Hirata, Miyo, Sato, Fabian, Ishizaki, Sugiyama, Aso, Tanaka, Terrence
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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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 * IY: Recovered the F1, F2 FRs. Compressed the F0 blades more to extend the height range. Total adjustable range became +/- 10.6mm.
 * IX: Calibrated the BF damper. The LVDT driver was replaced to the low noise one.
 * The corrugate tube fixing jigs were replaced in IY, EY, and EX.		  * 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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 * This week we installed SR2 oplev hardware and routed the power cable from the rack to the SLED. Next week we'll align the optical components.
 * On the week before the ast one, we installed the SRM oplev optics, aligned the optical components and calibrated the QPD in terms of their displacements.
 * [Terrence] SRM optical lever was calibrated and diagonalized. But the noise floor is too high to render it useful for my purpose. [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=17499|klog 17499]].
 * I synthesized a sensor correction filter according to the seismometer noise and seismic noise in KAGRA. It resembles the LIGO filter but with lower noise amplification. (show notebook)
 * About SRM.
   * I was given a month to work on the SRM and unfortunately I can't finish everything that I wish to do. Today is the deadline so I will stop working on it, unless I am given more time to work on it.
   * It would be useless if I don't share my knowledge with commissioners. But I know you are all busy and you might already have your own plan on how to configure the suspensions. I don't want to force people to listen to my stuff. But, just in case if people want to know how I do particular things, I will be very happy to share.		 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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 * Power supply for IX and IY was changed. === Control ===
 * Updated on Oplev.
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=== Control ===
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 * Type-A team: Finalization of IX and EX.
 * Type-B team: Oplev alignment in SR2 and SRM.		  * Type-A team: ACC preparation.
 * Type-B team: Table height measurement in PRM/BS. OSEM offload in PR3. 
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BS Outer frame == Travel Plans ==
The week from 8/2
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 * The brace (support beam) for BS outer frame was not attached in O3. The brace itself is ready.
 * We have a structure analysis for the frame prototype (SR type), but not for the BS type.
 * I like to ask Sato-san the analysis for BS type to confirm the availability.		  * Takahashi: 8/2-6
 * Sato: 8/2-6
 * Hirata: 8/2-6
 * Yano: 8/2-6
 * Ishizaki: 8/6-9? (Shift)
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== Travel Plans ==
The week from 7/19

 * Takahashi: 7/19-21
 * Sato: 7/19-21
 * Hirata: 7/19-21
 * Yano: 7/19-21

The week from 7/26

 * Takahashi: 7/26-30
 * Hirata: 7/26-30
 * Yano: 7/26-30		 The week from 8/9
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 * 2021/7/30(FRI)  * 2021/8/6(FRI)

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 13:00-13:50

Participants: Takahashi, Ikeda, Kimura, Sato, Ushiba, Tomaru, Aso, Yokozawa, Hirata, Miyo, Node

Post O3 Upgrade portal

Schedule

  • IX: In finalization. Problem on cables (unbalance, coupling?).
  • 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. FC was extended to the magnet. Regluing might be needed. Installation will be started in the next week.

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 in IX will be finished on 8/2. That in EX will be done after the CAL alignment.
  • Commissioning in vacuum:
  • Overall commissioning:
  • Acceptance check: Every Friday.
  • PF actuator: At the in-vacuum commissioning.
  • New vacuum pumps for V-chambers: GVs were implemented on 7/28-29.

Discussion

  • Operators to ALIGN the suspensions are necessary.

VIS Meeting

14:00-14:30

Participants: Takahashi, Hirata, Miyo, Sato, Fabian, Ishizaki, Sugiyama, Aso, Tanaka, Terrence

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

  • Updated on Oplev.

Schedule

See Schedule

  • Type-A team: ACC preparation.
  • Type-B team: Table height measurement in PRM/BS. OSEM offload in PR3.

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)