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Revision 324 as of 2018-09-13 15:33:31
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Editor: EnzoTapia
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Revision 325 as of 2018-09-13 15:39:54
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Editor: EnzoTapia
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Deletions are marked like this. Additions are marked like this.
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 * We checked all the motors, like:
       *the IM picos, BF picos.
 * We checked the BF Stepper (Fishing rod), SF Stepper (SF Fishing rod), F0 Stepper (F0 Fishing rod).
 * We debugged an issue with the IP LVDTs and discovered it was a broken interface card D1402829 in the LVDT driver. We made up a working chassis with the original two driver cards, so we didn't have to reset all the phases and gains.
 * We reset the IP FRs to midrange.
 * We added a basic set of arc weights and recentered the IP. We then adjusted the verticality of the security structure.
 * We relocked the IP temporarily, unlocked the SF/... section and aligned the IM OSEMs.
 * We powered down the BS, SR3 and SR2 electronics in preparation for the power outage.
 * We checked all the motors:
       * IM picos, BF picos.
       * BF Stepper (Fishing rod), SF Stepper (SF Fishing rod), F0 Stepper (F0 Fishing rod).
       * IP Steppers (Horizontal fishing rods).
 * We use the Steppers to set to nominal height the BF and SF, but for the SF we culd not move it too much and it is still too low.
 * We set up the temporary oplev for SR2.
 * We checked the pitch of the optics. The current pitch is:
 * We tried to check the TM actuators but there is a problem with the MEDM screens that we need to fix next week.
 * We measured TFs of the GAS filters and the 6 DoF of the IM. It seems to be healthy.
 * We set the F0 stepper to middle position.
 * ...

Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

Type B (Mark)

Report for week of 9/10

  • We finish the invacuum and in air cabling for SR2, but the in-vacuum cables for Geophones and F0 Yaw stepper motor are just temporary and will be replaced later once the suspension is inside the tank.
  • We checked all the motors:
    • IM picos, BF picos.
    • BF Stepper (Fishing rod), SF Stepper (SF Fishing rod), F0 Stepper (F0 Fishing rod).
    • IP Steppers (Horizontal fishing rods).
  • We use the Steppers to set to nominal height the BF and SF, but for the SF we culd not move it too much and it is still too low.
  • We set up the temporary oplev for SR2.
  • We checked the pitch of the optics. The current pitch is:
  • We tried to check the TM actuators but there is a problem with the MEDM screens that we need to fix next week.
  • We measured TFs of the GAS filters and the 6 DoF of the IM. It seems to be healthy.
  • We set the F0 stepper to middle position.
  • ...

Type B (Mark)

Report for week of 9/3

  • We did more in-vacuum and in-air cabling for SR2 and got nearly everything connected.
  • We debugged the IM OSEMs and fixed two broken in-vacuum cables and some mislabeled in-air cables.
  • We debugged an issue with the IP LVDTs and discovered it was a broken interface card D1402829 in the LVDT driver. We made up a working chassis with the original two driver cards, so we didn't have to reset all the phases and gains.
  • We reset the IP FRs to midrange.
  • We added a basic set of arc weights and recentered the IP. We then adjusted the verticality of the security structure.
  • We relocked the IP temporarily, unlocked the SF/... section and aligned the IM OSEMs.
  • We powered down the BS, SR3 and SR2 electronics in preparation for the power outage.

Plan for week of 9/10

  • Monday 9/10 is scheduled power outage.
  • Mark in US (job interview).
  • Hirata-san, Fabian, Kozu-kun, Panwei at Kamioka Tue-Fri.
  • Enzo at Kamioka Tue-Thu, then JPS Meeting Fri, then vacation.

Etc
  • Recover from power outage.

SR2
  • Calibrate F0 LVDTs.
  • Calibrate IP LVDTs.
  • Cable geophones and any other remaining PI items.
  • Finish in-air cabling (sort out and relabel rack and feedthrough ends of any repurposed cables).
  • Do basic go/no-go test of electronic items.
  • Check SF keystone height and offload with FR as necessary.
  • Adjust ballast/trim mass of SF, with reserve for yaw stepper.
  • Set SF damper magnet ring height.
  • Check/tweak optic pitch.
  • TFs.

Plan for week of 9/17

  • Monday 9/17 is holiday (Respect for the Aged Day).
  • Enzo on vacation.
  • Mark, Hirata-san, Fabian, Panwei at Kamioka Tue-Fri.

SR2
  • Crane SR2 into tank.
  • Move SR2 in-air cables.
  • Remove First Contact.
  • Unlock and realign suspension.

SRM
  • Set pitch of SRM and RM, tighten clamps, remove winch system.
  • Weigh IM/... section.
  • Build up SS to BF level.
  • Add BF.

Plan for week of 9/24

  • Monday 9/24 is holiday (Autumn Equinox).
  • Mark, Hirata-san, Fabian, Panwei at Kamioka Tue-Fri.
  • Suspend IM and tweak height/balance.

SRM
  • Cable/test BF.
  • Install IRM.
  • Install/cable/test IM OSEMs.

To-Do Lists, Schedule

Vacation Info

  • Mark: 9/10-14 (job interview in US).
  • Enzo: 9/14 JPS, 9/15 through 10/8 vacation in Chile.

KAGRA/Subgroups/VIS/TypeB/Minutes (last edited 2022-01-14 13:44:05 by fabian.arellano)