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 * Recalibrate OL with improved procedure.  * --Recalibrate OL with improved procedure.--

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

  • Vacuum and roll floor.
  • Wipe ladders.
  • Tidy tools, parts.
  • Get stuff from ../WishList

2019-03-18

Etc

  • Tidy up.
    • Throw out foil and other garbage.
    • Gather and clean tools.
    • Gather and organize unused parts and fasteners.
    • Pull out unused cables in cable tray near SR3.
    • Return all unused cables to tent.
    • Move charging station to more convenient location (e.g., near -X entrance).
  • Make cheat sheet for BIO Config cards and put one in each rack. See D1302081

BS

  • IMPORTANT!!!!!!!!!!!!!!!!!!! Check IP H2 connection!
  • Improve immobilization of OL breadboard.
  • Reinstall LEN OL.
  • Double-check calibration of IP H3 LVDT: is the offset of ≈-805 µm at mechanical zero from klog 8377 correct per previous klogs etc?

SR2

  • --Recalibrate OL with improved procedure.--
  • Do pitch/longitudinal decoupling. L2P filter
  • Tidy up cables in rear of SR2 rack.

SR3

  • Recalibrate OL with improved procedure.
  • Check pico cables (one may have been stolen for SRM).
  • Choose optimum BIO Config board switch settings.

SRM

  • Set up LEN OL.
  • Design/install control filters.
  • Set up SRM Guardian.
  • Check pico adapter cables.
  • Debug 240 Hz noise in LVDT.
  • Get thermometer for SRM booth.
  • Choose optimum BIO Config board switch settings.

Minor Tasks

Mechanical

  • Put pointy-tipped screw in RM trolley for BS

Electronics

  • Install Tanaka-san's LVDT sig gen cards (when available).
  • Test stepper remote enable system.
  • Put SR3 cleanbooth electronics in minirack.
  • Update BS Circuit diagram, D1503600
    • Note removal of LED/PD on TM OSEMs.

    • Add stepper remote enable system.
    • Include watchdog.
    • Include information on assignment of channels to feedthrough positions.
    • Reflect gender-changers and non-flipping feedthrough adapters.
    • Add default and as-built stepper channel assignments.
    • 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 controls design description (cf LIGO-T1100378).

  • Make table of ADC/DAC assignments and check for consistency with D1503600.
  • 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.

Guardian

Documentation and Operation Manual

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

OLs

  • Design/procure/install permanent hard protective boxes.

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).

SR3

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

SRM

  • Install Enomoto-kun's beam target plate (if/when available).
  • 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)