Differences between revisions 78 and 322 (spanning 244 versions)
⇤ ← Revision 78 as of 2016-10-27 12:47:05 →
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Editor: MarkBarton
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← Revision 322 as of 2018-09-13 13:23:31 → ⇥
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Editor: EnzoTapia
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Deletions are marked like this. Additions are marked like this.
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 * Type B Past Week Summary
  * Fabian, Mark and Liu-kun did BS installation at Kamioka:
   * Replaced the thrust bearing in the BF with a stainless version. While replacing the picomotor spring, they found several issues with screws.
   * Removed the sheet metal cable clamp on the bottom of the BF and installed a redesigned one.
   * They installed the "flying saucer" cable clamp on the maraging rod between the IM and BF, and attached the cables. There was an issue with the cables from the bottom OSEMs, which are too short by about 300 mm.
   * Ruspended the IM. Relative to the mass budget, about 700 g of trim mass had to be taken off to get good balance. There was also a problem with rubbing. It turned out that the keystone and the attached central PEEK coil former for the LVDT were at an angle, and the inside of the coil former was fouling on the outside of the pole piece for the magnets. It's not yet clear why the keystone was misaligned.
  * Hirata-san:
   * Made drawings of (revised) stub flag gluing jigs.
   * Worked on BS full-assembly drawings for Saito-sensei.
   * (For other groups)
    * Made a 3D model of maraging wires.
    * Finished making drawings of PRM inner frame.
    * Worked on re-setting up PC after crash.
 * Longer term to-do list
  * Do Inventor assembly for SRx in chamber and on assembly frame (Hirata) - SR2/SR3 DONE, SRM ongoing.
   * Part "disk security" top has to be modified - screw positions do not match.
  * Write more of payload assembly procedure (Fabian) - ONGOING
  * Write more of BS Assembly Procedure [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4235| E1504235]], [[https://onedrive.live.com/redir?resid=D5CCFA70A378E0D0!195&authkey=!AM_usynuo9QI57g&ithint=folder,webloc|E1504235 draft]] (Mark) - ONGOING
  * Lower breadboard installation to be incorporated into the procedure document.
  * Work on BS simulation (Fabian)
  * Do 2D drawings of SR2 parts (Hirata)
  * Redesign SRx IM wire clamps for larger prisms, remachined RMs
  * Order SRM/PRM parts (Hirata/Shoda)
  * Order SRx fasteners (Hirata)		 === 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 temporary and will be replaced later, once the suspension is inside the tank.
 * 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.
Line 30: Line 15:
  === 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 ====
 * [[KAGRA/Subgroups/VIS/TypeB/ToDoBS]]
 * [[KAGRA/Subgroups/VIS/TypeB/ToDoSR]]
 * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7779|JGW-L1807779 Type B Schedule (SR)]]

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

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 temporary and will be replaced later, once the suspension is inside the tank.
  • 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.

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 2022-10-28 10:02:46 by fabian.arellano)