Differences between revisions 290 and 341 (spanning 51 versions)
⇤ ← Revision 290 as of 2018-06-01 11:52:28 →
Size: 2751
Editor: MarkBarton
Comment:
← Revision 341 as of 2018-11-02 13:26:27 → ⇥
Size: 3493
Editor: MarkBarton
Comment:
Deletions are marked like this. Additions are marked like this.
Line 6: Line 6:
==== Report for week of 5/28 ====
 * Enzo tested the LVDT driver repaired by Tanaka-san - it was fine.
 * Fujii-kun and Enzo finished assembling a batch of 4 geophones and took test data.
 * Hirata-san modified some Promec masses (drilling out the threads on 2 of 4 holes) so we could use two layers of them inside the BF.
 * Hirata-san installed maraging rod receptacles in the LBB damper rings, and in the bottom of PIs #3 and #1 (for the SF damper rings).
 * After consulting with various people, Hirata-san installed the second half of the LBB top ring in the chamber, simply omitting the pillar and screw associated with the badly threaded hole.
 * Hirata-san took delivery of the screws for the LBB blade units, made up 9 blade units and installed 6 of them on PI #3 and #1 (for SR3 and SR2).
 * Hirata-san made up a set of PI cable clamps and installed them on PI #3 (for SR3).
 * Hirata-san removed the prototype blades from PI #3 to get ready for testing the final blades.
 * We located the #355 disk and #356 poles for the next level of the security structure up to the SF and installed the poles.
 * We installed ballast mass in the BF. After some trial and error we settled on 16 Promec masses (7.1 kg) inside the BF and 5 D1808104-4 and 3 D1808104-5 masses (540 g) on the cap.
 * Enzo and Fujii-kun did several rounds of TFs on the BF/... section of the suspension and debugged a problem with dewhitening filters not being installed in the OSEMINF filter bank.
 * Enzo installed damping filters for the IM OSEMs.

==== Plan for week of 6/4 ====
 * Mark, Enzo, Hirata-san, Kozu-kun at Kamioka Tue-Fri. (Mon is NAOJ medical checkup.)
 * --
 * Cable and test BF cap picos.
 * Crane in security structure disk at SF level.
 * Crane in SF and remove cap.
 * Hook BF and adjust total ballast.
 * Route cables through SF-BF flying saucer up to bottom of SF.
 * Adjust BF trim mass.
 * Readjust payload.
 * Take TFs.
 * Characterize final F0 blades.

==== Plan for week of 6/11 ====
 * Mark Enzo, Hirata-san, Kozu-kun at Kamioka Tue-Fri (Mon is compensation day for f2f.)
 * --
 * Any unfinished SR3 SF/... stuff.
 * Add budgeted ballast mass to SF and weigh SF/... section.
 * Cable, test SF LVDT and FR.
 * Rebuild F0 #3 for SR3.
 * Park F0 #1 (for SR2) in top of SR3 assembly frame.
 * Move F0 #3 behind SR3.
 ==== Report for week of 10/29 ====
 * SRM
  * Enzo repaired some broken cables and made some long cables from shorter ones. We ultrasonically cleaned them at Toyama U, with help from Yamamoto-san. Enzo then reinforced the joins with EP30 (two cables) or heat shrink.
  * Hirata-san finished tuning the PI. It is now complete except for some PEEK cable clamp pieces which are expected next Monday.
  * Hirata-san wiped writing marks off the F0 and SF yoke magnets, and off the PI.
  * Hirata-san found we were running out of magnets and ordered more - we have almost enough (short by one) for the SF damper, but will need more for the LBB damper.
  * Fabian cabled and tested the BF cap picos.
  * Fabian routed all the cables up to the underside of the SF. He cabled and tested the SF LVDT and stepper.
  * We added the SF cap and weighed the SF/... section. We appear to have a good amount of load capacity margin.
 * SR2
  * We opened the SR2 tank, borrowed a geophone for Fujii-kun's geophone test, and left the IP locked.
  * We gathered parts for the SR2 OL. We believe we have all the pieces we need except for an LED (the one originally allocated to SR2 is currently being used for pitch setting on SRM and we may need to steal it back). Akutsu-san wants to supervise us setting up the LED and receiver supports, so that will happen next week.
 * SR3
  * Terrence visited for another week and made more measurements on the OL. A report is forthcoming.
 * BS
  * We searched for the dog clamps that we had borrowed from AOS to serve as ballast for the BS LBB and returned them to the AOS pallet.
 * Electronics
  * Enzo analyzed the LPCD and worked out the resistors we need to get the drive current recommended for the IM-V OSEMs by Shoda-san.
Line 46: Line 27:
 * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7779|JGW-L1807779-v1 Type B Schedule (SR)]]  * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7779|JGW-L1807779 Type B Schedule (SR)]]
Line 48: Line 29:
==== Vacation Info ==== ==== Plan for week of 11/4 ====
 * Mark, Enzo, Hirata-san and Fabian at Kamioka Mon-Fri.
===== SRM =====
 * Main sequence
  * Add magnets to SF damper.
  * Install #353 poles
  * Move NB-03 jacks down.
  * Crane PI into AF.
  * Install F0-SF rod (#331) and flying saucer.
  * Route SF/... cables up to underside of F0.
  * Do vertical height budget.
  * Adjust SF trim mass for balance and keystone height.
  * Cable/test IP LVDTs.
  * Cable/test IP FRs.
 * LBB
  * Move KOACH filters
  * Put LBB damper rings in tank.
  * Set tank jacks to nominal height.

==== Plan for week of 11/11 ====
 * Mark, Enzo, Hirata-san and Fabian at Kamioka Mon-Fri.
===== SRM =====
 * Unlock IP and center roughly.
 * Calibrate IP LVDTs.
 * Check/adjust alignment of SS.
 * Add arc weights and geophones (or extra mass equivalent to geophones).
 * Cable/test geophones.
 * Improve centering/tuning of IP and SS alignment.

==== Plan for week of 11/18 ====
 * Friday 11/23 is Labor Thanksgiving Day.
 * Mark, Enzo, Hirata-san and Fabian at Kamioka Mon-Thu.
===== SRM =====
 * Unlock IP and center roughly.
 * Calibrate IP LVDTs.
 * Check/adjust alignment of SS.
 * Add arc weights and geophones (or extra mass equivalent to geophones).
 * Cable/test geophones.
 * Improve centering/tuning of IP and SS alignment.
 * Crane into tank.

Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

Type B (Mark)

Report for week of 10/29

  • SRM
    • Enzo repaired some broken cables and made some long cables from shorter ones. We ultrasonically cleaned them at Toyama U, with help from Yamamoto-san. Enzo then reinforced the joins with EP30 (two cables) or heat shrink.
    • Hirata-san finished tuning the PI. It is now complete except for some PEEK cable clamp pieces which are expected next Monday.
    • Hirata-san wiped writing marks off the F0 and SF yoke magnets, and off the PI.
    • Hirata-san found we were running out of magnets and ordered more - we have almost enough (short by one) for the SF damper, but will need more for the LBB damper.
    • Fabian cabled and tested the BF cap picos.
    • Fabian routed all the cables up to the underside of the SF. He cabled and tested the SF LVDT and stepper.
    • We added the SF cap and weighed the SF/... section. We appear to have a good amount of load capacity margin.
  • SR2
    • We opened the SR2 tank, borrowed a geophone for Fujii-kun's geophone test, and left the IP locked.
    • We gathered parts for the SR2 OL. We believe we have all the pieces we need except for an LED (the one originally allocated to SR2 is currently being used for pitch setting on SRM and we may need to steal it back). Akutsu-san wants to supervise us setting up the LED and receiver supports, so that will happen next week.
  • SR3
    • Terrence visited for another week and made more measurements on the OL. A report is forthcoming.
  • BS
    • We searched for the dog clamps that we had borrowed from AOS to serve as ballast for the BS LBB and returned them to the AOS pallet.
  • Electronics
    • Enzo analyzed the LPCD and worked out the resistors we need to get the drive current recommended for the IM-V OSEMs by Shoda-san.

To-Do Lists, Schedule

Plan for week of 11/4

  • Mark, Enzo, Hirata-san and Fabian at Kamioka Mon-Fri.

SRM
  • Main sequence
    • Add magnets to SF damper.
    • Install #353 poles
    • Move NB-03 jacks down.
    • Crane PI into AF.
    • Install F0-SF rod (#331) and flying saucer.
    • Route SF/... cables up to underside of F0.
    • Do vertical height budget.
    • Adjust SF trim mass for balance and keystone height.
    • Cable/test IP LVDTs.
    • Cable/test IP FRs.
  • LBB
    • Move KOACH filters
    • Put LBB damper rings in tank.
    • Set tank jacks to nominal height.

Plan for week of 11/11

  • Mark, Enzo, Hirata-san and Fabian at Kamioka Mon-Fri.

SRM
  • Unlock IP and center roughly.
  • Calibrate IP LVDTs.
  • Check/adjust alignment of SS.
  • Add arc weights and geophones (or extra mass equivalent to geophones).
  • Cable/test geophones.
  • Improve centering/tuning of IP and SS alignment.

Plan for week of 11/18

  • Friday 11/23 is Labor Thanksgiving Day.
  • Mark, Enzo, Hirata-san and Fabian at Kamioka Mon-Thu.

SRM
  • Unlock IP and center roughly.
  • Calibrate IP LVDTs.
  • Check/adjust alignment of SS.
  • Add arc weights and geophones (or extra mass equivalent to geophones).
  • Cable/test geophones.
  • Improve centering/tuning of IP and SS alignment.
  • Crane into tank.

KAGRA/Subgroups/VIS/TypeB/Minutes (last edited 2022-10-28 10:02:46 by fabian.arellano)