Differences between revisions 305 and 323 (spanning 18 versions)
⇤ ← Revision 305 as of 2018-07-27 14:19:43 →
Size: 2930
Editor: MarkBarton
Comment:
← Revision 323 as of 2018-09-13 15:33:24 → ⇥
Size: 3778
Editor: EnzoTapia
Comment:
Deletions are marked like this. Additions are marked like this.
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==== Report for week of 7/23 ====
 * We finished adding cable clamps to the SR2 PI and SF.
 * We craned in the SR2 PI and installed the PI-SF rod. As expected, there was not quite enough load capacity for even a 2 Cu-segment SF.
 * We changed the CuBe spring on the SR2 PI from an F2 type to an F1 and got about an extra 2 kg, which is plenty for 2 Cu segments.
 * We moved the feedthroughs from the SR3 assembly frame to the SR3 tank. Mirapro then moved the assembly frame to the SRM area. Mirapro also moved the duct on the +Y side of the SR3 tank to give us access to that side.
 * We laid a new set of SR3 in-air cables running directly to the tank. (We will repurpose the original set for SRM.)
 * We reconnected the SR3 cables on both sides of the feedthroughs. We had to adjust the routing of the in-vacuum ones several times to stop them touching the tank, but we finally found a good solution.
 * With help from Ohishi-san we removed the First Contact and then unlocked the whole suspension by stages. We need to check the optic pitch and do a little more mechanical adjustment but we were able to take TFs and implement IM and GAS control filters.
 * Hirata-san and Fujii-kun received most of the SRM metal mass parts, did inventory and practiced some of the key steps in the assembly, especially inserting the Sol-Black coated parts without touching the delicate surfaces.
 * Mark did inventory of the BIO stuff for the WD and of the OL parts.		 ==== 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, 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.
Line 17: Line 17:
==== Plan for week of 7/30 ====
 * Mark, Enzo, Hirata-san, Fabian, Kozu-kun, Terrence, Panwei at Kamioka Mon-Fri.
 * Kozu-kun works at Mozumi Mon, Fri, and Thu afternoon.		 === 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.
Line 21: Line 27:
===== SR3 =====
 * Finalize optic pitch, OSEM alignment.
 * Hook LBB, add ballast mass, set up temporary OL (horizontal beam, pitch/yaw only).
 * Identify/acquire items required for final OL (steering mirrors, second QPD, lens, collimator).		 ==== 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.
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===== SR2 =====
 * Fix issue with PI/SS/chain alignment.
 * Put magnets on SR damper ring (2 Cu segment pattern).
 * Remove PI-SF rod temporarily, install Cu segments and damper ring.
 * Do vertical height budget; choose optimum F0 keystone height.
 * Add estimated final ballast mass.
 * Do PI cable routing.
 * Adjust ballast/trim mass, with reserve for cables.
 		 ==== 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.
Line 36: Line 65:
 * Set up filter tuning area.
 * Tune F0 for SRM.
 * Add LBB blade units, cable clamps etc.
 * Check PI coil connections, IP LVDT magnets.		  * Cable/test BF.
 * Install IRM.
 * Install/cable/test IM OSEMs.
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 * Terrence: 8/24-26 f2f, then returns to Hong Kong.  * Mark: 9/10-14 (job interview in US).

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, 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.

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)