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==== Past week report ==== ==== Report for week of 1/29 ====
 * We moved the top filter intended for SR2 (#1) into the SR3 cleanbooth.
 * Unfortunately we noticed one of the blades had many small X-shaped stress fractures on the top surface (klog [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=4058|4058]]).
 * We moved the top filter entered for SR3 (#3) into the SRM cleanbooth and inspected the blades. Two had one smallish stress fracture each and one had a huge fracture and looks close to failing (klog [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=4061|4061]]).
 * We referred the BS OL.
 * We removed the BS tank lid and inspected the BS top filter blades. They seemed fine (klog [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=4073|4073]]).
 * Hirata-san received and washed some ferromagnetic disks for IM flags and other small parts.
 * Hirata-san moved the BF with the tilted keystone (#1) out of the cleanbooth in preparation for rebuilding.
 * Hirata-san placed the second order for payload parts, and an order for remachining of nuts for cable clamps on rods.
 * Fabian measured the gain of the ADC system (homework from the Commissioning Workshop).
 
==== Plan for week of 2/5 ====
 * Enzo on vacation; all others at Kamioka.
 * -
 * Make in-air pico adapter cables.
 * Calibrate LVDT.
 * Test IM picos and BF yaw pico.
 * Test FR.
 * Install ballast mass in BF.
 * Build IRM around IM.
Line 8: Line 27:
 * Mark finished the OL calibration/diagonalization calculation and wrote it up as klog [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=3835|3835]] and [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7205| T1707205-v4]].
 * We glued the prisms and magnets on the SR2.
 * We got Miyo-kun to set up the SR2-IM pico driver and tested it and the picos that will be used in the IM.
 * We weighed the BF for the SR2.
 * Enzo put DIO cards in the IO chassis and cabled them to the coil drivers.
 * Enzo found more of the in-vacuum cables that will be needed for SR2. Only a few remain to be found.
 * Enzo and Shoda-san installed the vacuum-feedthroughs on the assembly frame and routed many of the in-air cables.
 * Hirata-san and Mark moved the PR/SR trolley system from SR3 to SR2, reconfigured the top of the assembly frame and checked the crossbar heights. (Everything was quite close to the drawing, but a few small adjustments up/down will be required.)
 * Fabian found an issue with the IM: we have two of the upper movable masses and no lower ones. Probably one of the PRs has been built with two lower masses. Unfortunately an upper mass has an extra hole in an inconvenient place and can't be used as a lower mass. Hirata-san ordered a suitable plug part from Misumi, and Fabian washed it and glued it in with EP30.
 * Fabian assembled the RM and test-assembled the IRM. (The IRM will have to be partly disassembled during installation.)
 * Shoda-san and Enzo got all the control loops working on the BS, and worked with Izumi-san to steer the beam down the Y-arm. They found the passive damping was not working very well, even after correcting a 1.5 mm height error in F0. We may need to lower the damper ring.
 * Shoda-san created a BS Guardian.
 * We got Yamamoto-san to connect up the SR2 rack and create an SR2 real-time model.		 ==== Plan for week of 2/13 ====
 * No work Monday (建国記念の日の振替休日)<<BR>>
 * Enzo on vacation
 * Hirata-san at Mitaka Tue, Wed (to receive and wash parts).
 * All others at Kamioka.
 * -
 * Cable/test/adjust IM OSEMs.
 * Do TFs from IM OSEMs to IM OSEMs, OL pitch/yaw.
Line 22: Line 36:
==== Plan for week of 12/18 ====
 * Shoda-san vacation
 * Mark, Fabian, Enzo, Kozu-kun at Kamioka Mon-Wed.
 * Assembly frame alignment and optical table centering.
 * Install IM ring interface blocks and IM ring.
 * Finish IM assembly and pico test.
 * Do inventory of ballast masses.
 * OL setup.
 * Install new jack receptacles (in SR3 area, second floor) on load gauge adapter (SR2 area, second floor).

==== Plan for week of 12/25 ====
 * Mark, Enzo, Fabian vacation
 * Shoda-san, Kozu-kun, Hirata-san at Kamioka Mon-Thu.
 * Hang SR and RM?		 ==== Plan for week of 2/19 ====
 * Lift BF/... section and check total mass and balance.
 * Cable and test BF picos.
 * Add section of SS up to SF ring.
 * Bring in SF.
 * Add Cu segments to SF cap.
 * Hook BF/... section.
 * Route cables up to under SF.
 * Check/adjust total mass of BF/... section.
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 * Mark 12/22-1/3
 * Enzo, 12/21-12/27 (but ''not'' 12/28)
 * Fabian 12/22-1/5
 * Hirata-san 12/21-22 (conference)
 * Shoda-san 12/18-21
  		  * Enzo 1/30-2/19 (at Mitaka 1/29, part of 1/30).
 * Fabian 4/2-4/27 vacation (then gone).

Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

Type B (Mark)

Report for week of 1/29

  • We moved the top filter intended for SR2 (#1) into the SR3 cleanbooth.

  • Unfortunately we noticed one of the blades had many small X-shaped stress fractures on the top surface (klog 4058).

  • We moved the top filter entered for SR3 (#3) into the SRM cleanbooth and inspected the blades. Two had one smallish stress fracture each and one had a huge fracture and looks close to failing (klog 4061).

  • We referred the BS OL.

  • We removed the BS tank lid and inspected the BS top filter blades. They seemed fine (klog 4073).

  • Hirata-san received and washed some ferromagnetic disks for IM flags and other small parts.
  • Hirata-san moved the BF with the tilted keystone (#1) out of the cleanbooth in preparation for rebuilding.
  • Hirata-san placed the second order for payload parts, and an order for remachining of nuts for cable clamps on rods.
  • Fabian measured the gain of the ADC system (homework from the Commissioning Workshop).

Plan for week of 2/5

  • Enzo on vacation; all others at Kamioka.
  • -
  • Make in-air pico adapter cables.
  • Calibrate LVDT.
  • Test IM picos and BF yaw pico.
  • Test FR.
  • Install ballast mass in BF.
  • Build IRM around IM.

Plan for week of 2/13

  • No work Monday (建国記念の日の振替休日)

  • Enzo on vacation
  • Hirata-san at Mitaka Tue, Wed (to receive and wash parts).
  • All others at Kamioka.
  • -
  • Cable/test/adjust IM OSEMs.
  • Do TFs from IM OSEMs to IM OSEMs, OL pitch/yaw.

Plan for week of 2/19

  • Lift BF/... section and check total mass and balance.
  • Cable and test BF picos.
  • Add section of SS up to SF ring.
  • Bring in SF.
  • Add Cu segments to SF cap.
  • Hook BF/... section.
  • Route cables up to under SF.
  • Check/adjust total mass of BF/... section.

Vacation Info

  • Enzo 1/30-2/19 (at Mitaka 1/29, part of 1/30).
  • Fabian 4/2-4/27 vacation (then gone).

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