VIS Type B To-Do List

Archived items are at ../ToDoOld.

Every Week

Coming Weeks

Every Week

Facilities

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

• Get stuff from ../WishList

2019-01-21

Etc

• Work with Akutsu-san to get additional two camera viewports (for SR2 and SRM).
• Open all dead geophones, replace preamps, test, seal, retest.
• Get rid of all cable reels.

BS (top priority)

• Install a working set of geophones, e.g., from SR3.
• Fix touching issue.
• Secure any keystone trim mass.
• Recenter the OL.

SR3 (priority 2)

• Survey optic height and raise suspension on jacks as necessary.
• Reinstall OL LED (original one borrowed for SR2 - probably use new one to be supplied by Simon), probably change collimator, and realign OL.
• Secure any keystone trim mass.

SR2

• Survey optic height and raise suspension on jacks as necessary.
• Remove tape, writing etc on PI and PI items.
• Secure any keystone trim mass.

SRM

• Raise suspension 3.5 mm on jacks.
• Check/improve payload alignment and IM OSEMs. Recheck optic pitch with OL as needed.\
• Adjust F0 keystone trim to give desired height and secure weights in place.
• Install geophones and arc weights.
• Center and tune IP.
• Hook LBB and add just enough ballast to have it bouncing.
• Wipe inside tank with Vectra-Alpha wipes and IPA.
• Set up TILT OL.

2019-01-28

BS

SRM

• Install camera viewport. (Mirapro will be available 1/28)
• Setup LEN OL.
• Add additional ballast to LBB to set desired height (only if someone will be putting stuff on it).
• Install Enomoto-kun's beam target plate (when available).

SR3

• Install camera viewport (already available).
• Add additional ballast to LBB to set desired height (only if someone will be putting stuff on it).
• Install camera.
• Run cables for camera.

SR2

• Add camera viewport (when available).
• Add new feedthrough to lower part of tank (with Izumi-san-tachi)?
• Install cable for MIF pico on LBB (with Izumi-san-tachi)?
• Add additional mass to LBB to have it at the desired height
• Install camera.
• Run cables for camera.

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

• Write generic Type B Guardian; make BS and SR3 inherit from it; make analog WD optional for now (all suspensions will get them eventually).
• (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

• Get picomotor drivers back on line.

• Debug BS BIO connections, especially PI IP.

Main Assembly Sequence

• Necessary for phase-I★★★

  • Modify IP LVDT damping filters to include set point.

  • TFs.

  • EXCHANGE YAW/VERT FRs at F0

• Necessary for phase-II★★
  • Debug BS geophones.
  • Flip circuit boards in BS geophones to make them the same as SRx.

  • Calibrate IP LVDT actuation against IP LVDT sensing. (Klog 3553? http://klog.icrr.u-tokyo.ac.jp/osl/?r=3553)

  • Design PI Sensor blending filter.
  • Tune the LVDT sensitivity
  • Measure IP period; adjust ballast mass.
• At some point (remotely)★
  • Improve OL offloading.
  • Improve GAS offloading.
  • Spectral analysis of Oplev.
  • Design, install angular lock servo using OL. (Almost done for phase-I)
  • Adjust gains and debug damping for IM OSEMs and GAS LVDTs. (Almost done for phase-I)
  • Subtract DC level of Geophones.
  • Spectra analysis of PI sensors (PI LVDTs and Geophones).
  • Calibrate IP LVDT sensing against IP LVDT actuation, IP FRs.
  • Set all EQ stops to TBD clearance.
  • Modify the model for IP coil driver control

Documentation and Operation Manual

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

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.
• Finish assembly drawing for LBB and LBB damper ring and post on JGWDoc (Hirata-san).
• Figure out how to make PI yaw adjustment reliable.

Minor Tasks

Mechanical

• Put pointy-tipped screw in RM trolley for BS

• Return/replace temporary ballast mass (dog clamps).

• Characterize replacement F0.

• Wipe/clean arc weights that were rained on.

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.