VIS Type B Near Term To-Do List

Every Week

Design final BF/SF ballast mass assuming BF can be made to work without rebuild (Fabian).
Finish assembly drawing for LBB and LBB damper ring and post on JGWDoc (Hirata-san).
Do version of 3D CAD with test-hang arrangement of suspension and LBB damper stuff (Hirata-san).
Do version of 3D CAD with final-hang arrangement of suspension and LBB damper stuff (Hirata-san).

Push Hirose-san to set exact date.
Organize transport company for Kashiwa->Kamioka
Organize NAOJ vehicle for Mitaka->Kashiwa
- Akabou Yoshihara Delivery Service (赤帽よしはら運送) yoshihara@akabou.ne.jp (吉原様)
Collect all items required.
- Mirror box.
- Prisms.
- Stub flags.
- Magnets: SmCo, 2 mm diameter, 3 mm long
- Prism jigs
- Flag jigs
Glue magnets to flags, 2 N, 2 S.
Organize clean suits.
- Make a list of people's sizes:
  - Mark: LL, 29 cm
  - Fabian: L, 26.5 or 27 cm
  - Hirata: M, 25.5 cm
  - Enzo: L, 27 or 28 cm
- Get ones at Mitaka laundered?
- Get Mark/Enzo to bring from Kamioka?

BS PI Geo #0 ~ #2 BS PI LVDT #0 ~ #2 BS PI Stepper #0 ~ #2

Final ballast mass design/production for BF and SF (Fabian, Hirata-san).
Get final OSEM cables (six of 1.7 m, two of 2.2 m, two of 2.4 m; Sato-san).
Possible rebuild of BF and/or SF
- Set up build/test stand for filters.
- Get filter test weights.
- Find spare BF blade(s).
Prepare real BS:
- Coordinate with Hirose-san.
- Book transport of mirror (Kashiwa to KAGRA)
- Gather mirror box, gluing supplies, prisms, magnets, new flags, new flag jigs.
- Solve problem of lack of scribe line on one side of BS (Mark, Hirata-san).
- Organize cleanroom gear for Kashiwa trip(s).
- Put magnets in flags.
- Glue flags/prisms at Kashiwa.
Reclean stuff:
- PI (remove Kapton tape etc, etc).
- LLB damper stuff, especially Cu segments.
Try rearranging arc weights to make room for magic wand (3D CAD or actual weights; Fabian or Hirata).
If needed based on previous, order longer threaded rods for arc weights on PI (Hirata).
Calibrate PI vertical LVDT.
Set yoke on PI vertical LVDT (if necessary).
Calibrate PI horizontal LVDTs.
Unlock BF keystone and try running BF fishing rod to fix sag problem.

Get clean bag laundered.
Swap out temporary ballast mass in BF, SF.
Return/replace borrowed parts:
- Lock washers for LBB dampers
- Temporary ballast mass (dog clamps) in BF.
- Wide-mouth OSEMs from RM to Akutsu-san
Adjust height of crossbars below BF.
If possible, fix galled pole in BF level of EQ stop.
Swap in new F0-SF maraging rod (with 8-mm heads) and new receptacles to match.
Check inside SF for lost ruler.
Tighten PI yaw return spring.
Get Cu O-rings for feedthroughs.

Decide final in-vacuum and in-air cable routing (Enzo).
Calibrate all LVDTs (Enzo, Mark).
Remove cling wrap in BF and install vacuum-compatible heat shrink.
Remove cling wrap on connections for PI vertical stepper and install vacuum-compatible heat shrink (needs wider diameter heat shrink or smaller pins).
Rewire PI horizontal steppers with vacuum-compatible cable.
Adjust yoke on BF to put top of secondary at 6 mm above top of baseplate (or to give ≈0 counts at nominal height).

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.
Design and install GAS drift compensation filters.
Create a proper DAC Monitor MEDM screen.
Improve ADC Monitor MEDM screen.