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

• 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.
• 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.