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Date: 2022/6/3 13:00- Date: 2022/6/3 13:00-13:40
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Participants: Participants: Takahashi, Miyoki, Ikeda, Akutsu, Uchiyama, Hirata, Sato, Node, Ushiba, Yokozawa, Aso
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 * IX: MN Oplev Laser noise (Thermometer). Offload.  * IX: MN Oplev Laser noise (Preparing for temperature control). Offload.
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 * Type-B: Recovery from FC on BS (OSEM adjustment, Cable touching, 50mHz yaw motion). Stand-alone SM driver for SR3. Geophone #2 in SR2.
 * Type-Bp: Test of traverser limit SW in PRM. Installation of MSB to BS. Health check of PRs. FC on PR3 and traverser limit SW to PR3 in the next week.
 * Type-B: Recovery from FC on BS (OSEM adjustment, Cable touching, 50mHz yaw motion). Visual inspection of BS is necessary. Stand-alone SM driver for SR3. Geophone #2 in SR2.
 * Type-Bp: Test of traverser limit SW in PRM. Installation of MSB to BS. Health check of PRs. FC on PR3 and traverser limit SW to PR3 in the late next week.
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 * Commissioning in vacuum: Y-arm lock with Stefan in the next week.  * Commissioning in vacuum: Y-arm lock with Stefan and transmission of X-arm in the next week.

Agenda/Minutes

Zoom Meeting


CRY+VIS Interface Meeting

Date: 2022/6/3 13:00-13:40

Participants: Takahashi, Miyoki, Ikeda, Akutsu, Uchiyama, Hirata, Sato, Node, Ushiba, Yokozawa, Aso

Post O3 Upgrade portal

Schedule

  • IX: MN Oplev Laser noise (Preparing for temperature control). Offload.
  • EX: Recovery from cooling (Setpoint change, Offload, Health check).
  • IY: Leak test. Offload.
  • EY: Leak test.
  • Type-B: Recovery from FC on BS (OSEM adjustment, Cable touching, 50mHz yaw motion). Visual inspection of BS is necessary. Stand-alone SM driver for SR3. Geophone #2 in SR2.
  • Type-Bp: Test of traverser limit SW in PRM. Installation of MSB to BS. Health check of PRs. FC on PR3 and traverser limit SW to PR3 in the late next week.
  • Type-C: Alignment of OMC in the next week.

Status

  • Replacement of flip cables: EXT and BF temp.
  • TM height setting: Following the cooling.
  • Oplev: TM Oplev windshield in EX.
  • ACC:
  • Commissioning in air:
  • Commissioning in vacuum: Y-arm lock with Stefan and transmission of X-arm in the next week.
  • Acceptance check:
  • PF actuator: At the in-vacuum commissioning.
  • New vacuum pumps for V-chambers: Test in IYV.
  • Heater control: Pending.
  • TMS: QPD in EX.

Discussion


VIS Meeting

Date: 2022/6/3 14:00-

Participants:

Summary Report

Type-A

  • Offloaded the GAS filters in IX, EX, and IY.

Type-B

  • Beam Splitter: after First Contact work last week, the H2 OSEM readout was close to the end of its usable range.
    • We found a cable from one of the RM coils touching the security structure. We moved it and clamped it in a slightly different position.
    • Then we adjusted the pitch and yaw of the BS using the picomotor and F0 yaw stepper motor respectively.
    • We also inspected that nothing around the BF was touching the security structure. Ushiba-san also made a quick test moving up and down the F0 and checking the output of F1 and BF LVDTs.
    • Finally, we moved H2 and H3 OSEMs to more suitable positions.
    • We measured TFs and corroborated that the system is healthy.
  • In SR2, the geophones stopped working, so we checked. The problem was tracked down to the geophone #2 pins powering the preamplfier. There is a short circuit between pins 4 and 5. Next week we will check the in-vacuum cables and, depending on the result, we may want to change the preamplfier or the whole geophone with its pod.

Type-Bp

  • Health check of PR suspensions.

Type-C

Electronics

Control

Schedule

See Schedule

  • Type-A: Y-arm lock.
  • Type-B: Geophone in SR2.
  • Type-Bp: FC on PR3. Traverser limit SW in PR3.
  • Type-C: Alignmenet of OMC.

Safety

Discussion

Travel Plans

(Date in Kamioka)

The week from 6/6

  • Takahashi: 6/7-10
  • Sato: 6/6-10
  • Hirata: 6/6-10
  • Aso: 6/6-9

The week from 6/13

  • Takahashi:
  • Sato:
  • Hirata:

Next meeting

  • 2022/6/10(FRI)

KAGRA/Subgroups/VIS/VISMinutes20220603 (last edited 2022-06-03 14:24:05 by RyutaroTakahashi)