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Editor: MarkBarton
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 * Type B Past Week Summary, weeks of 9/19 and 9/26
  * Fabian, Mark and Kuwahara-kun did BS installation at Kamioka:
   * The BS clean booth was modified 9/20-21 to allow crane access. The area was fairly clean when Fabian inspected it on 9/26, but there were lots of metal flakes stuck to tape holding foil over the slit in the top of the clean bag.
   * Mark created a new Type B rtcds model and MEDM screens for the BS, adapting the TypeBb/PR3.
   * Mark and Kokeyama-san debugged the new model, fixing several issues.
   * Kuwahara-kun derived OSEM2EUL and EUL2OSEM matrices.
   * Mark set up OSEMINF filters using measured OSEM calibration data to return outputs in µm.
   * Mark took free-swing data on the TM stage to get the pendulum mode frequencies for comparison to the SUMCON model.
   * Mark and Fabian debugged the coil output to the OSEMs. (At first the coil drive was not giving output because it did not have BIO inputs and so was reading the test input, not the main input. And for a while output failed because of a loose cable to the sat amp.)
   * Mark took fixed-sine TFs to check the polarity of the coil-magnet combinations.
  * Hirata-san:
   * Finished 3D CAD of SRM in tanks (but some work was lost due to a hard disk crash).
   * Did 3D and 2D for new maraging rods, stub flags for PR/SR (ditto re hard disk).
   * Measured/tested Type A BF #8 and started assembling #9.
 * 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 BS Simulink model (Mark, Kokeyama) - TM/IM/BF level DONE
  * 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) ===
==== Past week report ====
At Kamioka (Mark, Fabian, Enzo, Hirata-san):
Line 32: Line 9:
   * Enzo and Fabian routed all the SF/... cabling up past the SF and anchored it to the PI.
 * Enzo and Fabian moved the vacuum feedthroughs to new positions on the assembly frame corresponding more closely to the positions on the tank.
 * Hirata-san received the LBB blades back from additional machining, and he and Mark characterized them, and chose the 3 that were most closely matched. The total load capacity is 294 kg, which is rather larger than the 202 kg for the LBB and intermediate ring.
 * Mark measured all the coil resistances for the LVDTs and steppers on the PI to check everything was wired properly.
 * Hirata-san received the outrigger plates for the LBB black from additional machining to add helicoils but discovered that they were not M16 fine pitch but M16 regular. He sent them off again to be corrected.
 * Mark and Hirata-san inspected the vacuum tank and discovered that the top section is on backwards relative to the 3D CAD so that the jacks supporting the tank and the jacks supporting the PI via bellows are interchanged. We decided that, for the test hang, we would put the suspension in with a 135° anticlockwise rotation (instead of a 45° clockwise one). For the final hang, we will build the suspension with the BS/RM section backwards.
 * Fabian moved the F0 trim mass from on top of the F0 keystone and anchored it to the SF, keeping about 0.5 kg in reserve to allow for the weight of the SF-PI cables.
 * Enzo, Fabian and Hirata-san rearranged the in-air cabling for the OSEMs to match changes to the in-vacuum cables.

==== Plan for coming weeks ====
For more detail, see [[KAGRA/Subgroups/VIS/TypeB/ToDo]].

Week of 6/6:
 * Cabling:
  * Finish moving in-air cabling to match feedthrough positions.
  * Cable and test PI vertical LVDT.
  * Calibrate PI vertical LVDT.
  * Set yoke on PI vertical LVDT (if necessary).
  * Cable and test PI yaw stepper.
  * Cable and test PI vertical stepper.
  * Cable and test PI horizontal steppers.
  * Cable and test PI horizontal LVDTs.
  * Calibrate PI horizontal LVDTs.

Week of 6/12:
 * Remove -Y flange cover.
 * Wipe LBB.
 * Loosen or remove LBB hold-down bolts.
 * Attach LBB outriggers and rod receptacles.
 * Remove port covers where feedthroughs will go.
 * Crane into tank.

Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

Type B (Mark)

Past week report

At Kamioka (Mark, Fabian, Enzo, Hirata-san):

  • Enzo and Fabian routed all the SF/... cabling up past the SF and anchored it to the PI.
  • Enzo and Fabian moved the vacuum feedthroughs to new positions on the assembly frame corresponding more closely to the positions on the tank.
  • Hirata-san received the LBB blades back from additional machining, and he and Mark characterized them, and chose the 3 that were most closely matched. The total load capacity is 294 kg, which is rather larger than the 202 kg for the LBB and intermediate ring.
  • Mark measured all the coil resistances for the LVDTs and steppers on the PI to check everything was wired properly.
  • Hirata-san received the outrigger plates for the LBB black from additional machining to add helicoils but discovered that they were not M16 fine pitch but M16 regular. He sent them off again to be corrected.
  • Mark and Hirata-san inspected the vacuum tank and discovered that the top section is on backwards relative to the 3D CAD so that the jacks supporting the tank and the jacks supporting the PI via bellows are interchanged. We decided that, for the test hang, we would put the suspension in with a 135° anticlockwise rotation (instead of a 45° clockwise one). For the final hang, we will build the suspension with the BS/RM section backwards.
  • Fabian moved the F0 trim mass from on top of the F0 keystone and anchored it to the SF, keeping about 0.5 kg in reserve to allow for the weight of the SF-PI cables.
  • Enzo, Fabian and Hirata-san rearranged the in-air cabling for the OSEMs to match changes to the in-vacuum cables.

Plan for coming weeks

For more detail, see KAGRA/Subgroups/VIS/TypeB/ToDo.

Week of 6/6:

  • Cabling:
    • Finish moving in-air cabling to match feedthrough positions.
    • Cable and test PI vertical LVDT.
    • Calibrate PI vertical LVDT.
    • Set yoke on PI vertical LVDT (if necessary).
    • Cable and test PI yaw stepper.
    • Cable and test PI vertical stepper.
    • Cable and test PI horizontal steppers.
    • Cable and test PI horizontal LVDTs.
    • Calibrate PI horizontal LVDTs.

Week of 6/12:

  • Remove -Y flange cover.
  • Wipe LBB.
  • Loosen or remove LBB hold-down bolts.
  • Attach LBB outriggers and rod receptacles.
  • Remove port covers where feedthroughs will go.
  • Crane into tank.

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