Differences between revisions 26 and 50 (spanning 24 versions)
⇤ ← Revision 26 as of 2019-02-01 19:11:32 →
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← Revision 50 as of 2019-03-04 14:32:48 → ⇥
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Editor: MarkBarton
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Deletions are marked like this. Additions are marked like this.
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== Paper ==
 * --(Review Type Bp paper)--
 * --(Choose paper title)-- -> "Vibration isolation systems for the beam splitter and signal recycling mirrors of the KAGRA gravitational wave detector"?
 * --(Create JGWDoc number for paper)-- -> [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=9836|P1909836]]
 * --(Decide paper author list)-- -> KAGRA Author List 2019?
 * Write Type B paper abstract
 * Write paper outline
 * Write Type B paper Section 1 Introduction
 * Vibration isolation systems in KAGRA
  * Write Section 2.1 Overview
   * Steal or reproduce Type Bp Figure 1 (optic layout)
   * Steal or reproduce Type Bp paper Figure 2 (suspension comparison)
 * Write Section 2.2 Requirements for Type B
 * Write Section 3 Design of the Type-B suspension
  * Write Section 3.1 Mechanical
   * Choose photo of Type B suspension in mid-air
   * Make diagram of Type B in vacuum chamber
  * Write Section 3.2 Sensors and Actuators
  * Write Section 3.3 Control and Damping
   * Make controls diagram like Type Bp paper Figure 7
 * Write Section 4 Measured performance
  * Write Section 4.1 Damping Time
   * Make decay time plot like Type Bp paper Figure 8
  * Write Section 4.2 Residual Velocity
  * Write Section 4.3 Residual Angular Fluctuations
  * Write Section 4.4 Vibration Isolation Performance
 * Write Section 5 Summary
 * Write Section 6 Acknowledgments
 * Write References Section
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=== 2019-02-04 === === 2019-03-04 ===
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 * Get additional two camera viewports.
 * Get rid of all cable reels		  * Help Fujii-kun with PRx.

==== All ====
 * Test stepper remote enable system.
 * Choose optimum BIO Config board switch settings for all OLs. See [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=2081| D1302081]] for what each switch does. Four of them are gain stages (24 dB, 12 dB, 6 dB, 3 dB), and three are filters (all 1 Hz zero, 10 Hz pole). Please clarify the switch numbering and functions (switch "1" = circuit board B0 = group 1, filter A1; position 1 = enable?), make a cheat sheet and put a copy in each rack.
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 * Install BNC cables for stepper remote enable, and debug.
  * Offload large IM/IRM yaw to IP or F0 yaw.
 
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 * Check the IP stop height (if there's a excuse to open the tank).
 * Release LBB; add approximate final ballast.
 * Install GAS Filters control loops. '''(Enzo)'''
 * Install IM control loops. '''(Enzo)'''
 * Decide buoyancy correction and pre-apply as much as possible, leaving optic at nominal height.
 * Install BNC cables for stepper remote enable, and debug.
 * Install camera viewport.
 * Install camera.
 * Run cables for camera.
  * Redo control filters for new topology.
 * Damping time measurements.
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 * Release the optical table again.
 * Adjust LBB damper and rods to give correct height and gap at mid-range on the blades.
 * Add approximate final ballast.
 * Install camera viewport.
 * Install camera.
 * Run cables for camera.
 * Debug stepper remote enable.
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 * Decide buoyancy correction and pre-apply as much as possible, leaving optic at nominal height.
 * Setup camera (with Kokeyama-san).
 * Set up TILT OL.
 * Set up LEN OL.
 * Install Enomoto-kun's beam target plate (if/when available).
 * Adjust LBB damper and rods to give correct height and gap at mid-range on the blades.
 * Add approximate final ballast.
 * Wipe inside tank with Vectra-Alpha wipes and IPA.
 * Debug stepper remote enable.		  * Debug OL, especially whitening filter. Note that WF S1808108 has a mysterious note on its JGWDoc page suggesting it may have a fault.
 * Set up LEN OL (if/when 3D QPD stage arrives).
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== Tasks To Be Scheduled ==
==== BS ====
 * Tune BS LBB (adjust table height, damper height) - DON'T BOTHER (unless there's an excuse to open the lower half of the tank).
 * Replace BS F0 thrust bearing and yaw adjuster - BIG JOB, DON'T BOTHER (unless lack of yaw adjustment becomes a major problem).

==== SR2 ====
==== SR3 ====
==== SRM ====
 * Find two geophone cables used by Okutomi-san. (I looked in the second floor EXV room but didn't find them - Mark.)
 * Find one geophone cable ordered for SRM but missing.
 * Rearrange miswired geophone cable.
 * Rebuild defective geophone cable.
 * Put FC on SRM-W and install it in its holder with 1.4 mm shims ready for possible use.

=== Tunnel ===
 * Get at least one BIO Converter chassis fully connected (CONTEC BIO card, WD and stepper motor chassis) for implementation and test of stepper motor reset function.
 * Check SR2, SR3 TM coil gains for magnet polarity compensation.
 * Replace chipped magnets (12x12x12 mm) in SR3 IP, H1 and H2.

=== Mitaka or remotely ===
 * (Continue to) soak the sapphire prisms off the dummy BS for reuse on the SRM metal mass.
 * Install damping filters for SR2.
 * Review DAC channel requests.
 * Split SRx real-time models?

== ASAP ==
 === Real-Time Model/Guardian ===
 * See [[KAGRA/Subgroups/VIS/OpsManual/Simulink]]
 * Test Guardians.
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<<Anchor(RealBSHang)>>

== Tasks Not To Forget ==
=== Major Tasks ===
 * --(Move safety bars from BS AF area to SR2 area.)--
 * Update circuit diagram.
 * (Time permitting) Try adding mass to IP.
 * Update BS Install Procedure with screenshots from new on-assembly-frame 3D CAD.
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==== Electrical ==== == Electrical ==
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==== Real-time and SUMCON models ==== == Real-time and SUMCON models ==
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== One Day, If Ever Needed ==
==== BS ====
 * Tune BS LBB (adjust table height, damper height) - DON'T BOTHER (unless there's an excuse to open the lower half of the tank).
 * Replace BS F0 thrust bearing and yaw adjuster - BIG JOB, DON'T BOTHER (unless lack of yaw adjustment becomes a major problem).
 * (Continue to) soak the sapphire prisms off the dummy BS for reuse on the SRM metal mass.
==== SR3 ====
 * Replace chipped magnets (12x12x12 mm) in SR3 IP, H1 and H2.
==== SRM ====
 * Install Enomoto-kun's beam target plate (if/when available).
 * Find two geophone cables used by Okutomi-san. (I looked in the second floor EXV room but didn't find them - Mark.)
 * Find one geophone cable ordered for SRM but missing.
 * Rearrange miswired geophone cable.
 * Rebuild defective geophone cable.
 * Put FC on SRM-W and install it in its holder with 1.4 mm shims ready for possible use.

VIS Type B To-Do List

Archived items are at ../ToDoOld.

Every Week

Coming Weeks

Paper

  • Review Type Bp paper

  • Choose paper title -> "Vibration isolation systems for the beam splitter and signal recycling mirrors of the KAGRA gravitational wave detector"?

  • Create JGWDoc number for paper -> P1909836

  • Decide paper author list -> KAGRA Author List 2019?

  • Write Type B paper abstract
  • Write paper outline
  • Write Type B paper Section 1 Introduction
  • Vibration isolation systems in KAGRA
    • Write Section 2.1 Overview
      • Steal or reproduce Type Bp Figure 1 (optic layout)
      • Steal or reproduce Type Bp paper Figure 2 (suspension comparison)
  • Write Section 2.2 Requirements for Type B
  • Write Section 3 Design of the Type-B suspension
    • Write Section 3.1 Mechanical
      • Choose photo of Type B suspension in mid-air
      • Make diagram of Type B in vacuum chamber
    • Write Section 3.2 Sensors and Actuators
    • Write Section 3.3 Control and Damping
      • Make controls diagram like Type Bp paper Figure 7
  • Write Section 4 Measured performance
    • Write Section 4.1 Damping Time
      • Make decay time plot like Type Bp paper Figure 8
    • Write Section 4.2 Residual Velocity
    • Write Section 4.3 Residual Angular Fluctuations
    • Write Section 4.4 Vibration Isolation Performance
  • Write Section 5 Summary
  • Write Section 6 Acknowledgments
  • Write References Section

Every Week

Facilities

  • Vacuum and roll floor.
  • Wipe ladders.
  • Tidy tools, parts.

  • Get stuff from ../WishList

2019-03-04

Etc

  • Help Fujii-kun with PRx.

All

  • Test stepper remote enable system.

  • Choose optimum BIO Config board switch settings for all OLs. See D1302081 for what each switch does. Four of them are gain stages (24 dB, 12 dB, 6 dB, 3 dB), and three are filters (all 1 Hz zero, 10 Hz pole). Please clarify the switch numbering and functions (switch "1" = circuit board B0 = group 1, filter A1; position 1 = enable?), make a cheat sheet and put a copy in each rack.

BS

  • Offload large IM/IRM yaw to IP or F0 yaw.

SR2

  • Redo control filters for new topology.
  • Damping time measurements.

SR3

SRM

  • Debug OL, especially whitening filter. Note that WF S1808108 has a mysterious note on its JGWDoc page suggesting it may have a fault.
  • Set up LEN OL (if/when 3D QPD stage arrives).

Real-Time Model/Guardian

Documentation and Operation Manual

  • Add useful info from Enzo's notebook to BSData.

Minor Tasks

Mechanical

  • Put pointy-tipped screw in RM trolley for BS

Electrical

  • Update BS Circuit diagram, D1503600

    • Note removal of LED/PD on TM OSEMs.

    • Organize stepper reset system and watchdog BIO.
    • Include information on assignment of channels to feedthrough positions.
    • Reflect gender-changers and non-flipping feedthrough adapters.
    • Reflect actual cable lengths.
    • Include LVDT pin size (1 mm).
    • Include Stepper pin size (1.6 mm).

    • Undo renumbering of IP items.

    • Page 10: "DIO Card # 0" should be "DIO Card # 1"

    • Include OutConfigBoards on OL page (Sheet 18).

    • Update HPCD section to reflect:

      • All three GAS channels are on HPCD #1 and DIO Card #2, CNB cables, Sheet 13.

      • Three IP channels are on HPCD #0 and DIO Card #2, CNA cables, Sheet 15.

Real-time and SUMCON models

  • Create SUMCON models for full BS and major installation milestones.

  • Create controls design description (cf LIGO-T1100378).

  • Make table of ADC/DAC assignments and check for consistency with D1503600 and k1visbs (Enzo, Mark)
  • Understand/document/debug Kokeyama-san's DIO stuff.
  • Measure LPCD and HPCD output filter response.
  • Design and install software compensation filters for LPCD and HPCD output filters.

One Day, If Ever Needed

BS

  • Tune BS LBB (adjust table height, damper height) - DON'T BOTHER (unless there's an excuse to open the lower half of the tank).
  • Replace BS F0 thrust bearing and yaw adjuster - BIG JOB, DON'T BOTHER (unless lack of yaw adjustment becomes a major problem).
  • (Continue to) soak the sapphire prisms off the dummy BS for reuse on the SRM metal mass.

SR3

  • Replace chipped magnets (12x12x12 mm) in SR3 IP, H1 and H2.

SRM

  • Install Enomoto-kun's beam target plate (if/when available).
  • Find two geophone cables used by Okutomi-san. (I looked in the second floor EXV room but didn't find them - Mark.)
  • Find one geophone cable ordered for SRM but missing.
  • Rearrange miswired geophone cable.
  • Rebuild defective geophone cable.
  • Put FC on SRM-W and install it in its holder with 1.4 mm shims ready for possible use.

KAGRA/Subgroups/VIS/TypeB/ToDo (last edited 2019-12-18 12:38:30 by fabian.arellano)