Differences between revisions 1 and 10 (spanning 9 versions)
⇤ ← Revision 1 as of 2021-12-23 21:13:58 →
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Editor: RyutaroTakahashi
Comment:
← Revision 10 as of 2021-12-24 12:49:06 → ⇥
Size: 2858
Editor: RyutaroTakahashi
Comment:
Deletions are marked like this. Additions are marked like this.
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 * ACC: Assembly for EY is under way.  * ACC: Experiments in IX/EX. Assembly for EY.
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Participants:

== Summary Report ==
=== Type-A ===
 * Monitored and offloaded the displacement of the IXV during the pump down.
 * Investigating the glitch of F3 signals in IX.
 
==== ETMY ====
 * Coil direction check for IP, GAS, and BF.
   * IP H1 H2 and H3 coils are all inverted. [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=19295|https://klog.icrr.u-tokyo.ac.jp/osl/?r=19295]]
   * F2, F3, BF GAS coils are inverted. [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=19303|https://klog.icrr.u-tokyo.ac.jp/osl/?r=19303]]
   * BF V1, V3, H2 coils are inverted. [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=19309|https://klog.icrr.u-tokyo.ac.jp/osl/?r=19309]]
   * Is there any reason why some of them are inverted? The coil output gains are now kind of messy.
 * IP LVDT sensing and actuation diagonalization. [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=19301|https://klog.icrr.u-tokyo.ac.jp/osl/?r=19301]], [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=19302|https://klog.icrr.u-tokyo.ac.jp/osl/?r=19302]]
 * Some questions
   * BF LVDT readouts are very large, they read a few thousand um/urad. Are they calibrated?
   * Some GAS filters are some thousand microns away from the setpoint. Can I simply use the stepper motors to offload them? Is there anything I should pay attention to?
   * What is the oscillation/pump at 20 mHz? It appears in many DoFs, e.g. IP L, BF L. (except GAS DoFs).
.
=== Type-B ===
=== Type-Bp ===
=== Type-C ===
=== Electronics ===
=== Control ===
== Schedule ==
See [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/VIS/Schedule|Schedule]]

 * Type-A team: ACC in EY, Heter test in IXV/EXV
 * Type-B team:

== Safety ==
== Discussion ==
== Travel Plans ==
(Date in Kamioka)

The week from 12/27

(Holidays in 12/29-1/3)

The week from 1/4

 * Takahashi: 1/5-7
 * Sato: 1/5-7
 * Hirata: 1/5-7

== Next meeting ==
 * 2022/1/7(FRI)

Contents

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

Agenda/Minutes

Zoom Meeting

CRY+VIS Interface Meeting

Date: 2021/12/24 13:00-

Participants:

Post O3 Upgrade portal

Schedule

  • IX: Pump down on 12/23. Glich in the F3 signals.
  • EX: In vacuum.
  • IY:
  • EY: Recovery of the BF problem.

Status

  • Replacement of flip cables:
  • TM height setting: ITMY.
  • Oplev: Setup of the TM Oplev in IY after the TM alignment.
  • ACC: Experiments in IX/EX. Assembly for EY.
  • Commissioning in air: Return of GRY.
  • Commissioning in vacuum: Pump down of IXC/IXV on 12/23.
  • Overall commissioning:
  • Acceptance check:
  • PF actuator: At the in-vacuum commissioning.
  • New vacuum pumps for V-chambers:
  • Heater control:
  • Power source for Oplev:

Discussion

VIS Meeting

Date: 2021/12/24 14:00-

Participants:

Summary Report

Type-A

  • Monitored and offloaded the displacement of the IXV during the pump down.
  • Investigating the glitch of F3 signals in IX.

ETMY

.

Type-B

Type-Bp

Type-C

Electronics

Control

Schedule

See Schedule

  • Type-A team: ACC in EY, Heter test in IXV/EXV
  • Type-B team:

Safety

Discussion

Travel Plans

(Date in Kamioka)

The week from 12/27

(Holidays in 12/29-1/3)

The week from 1/4

  • Takahashi: 1/5-7
  • Sato: 1/5-7
  • Hirata: 1/5-7

Next meeting

  • 2022/1/7(FRI)

KAGRA/Subgroups/VIS/VISMinutes20211224 (last edited 2021-12-24 14:30:35 by RyutaroTakahashi)