Differences between revisions 149 and 165 (spanning 16 versions)
⇤ ← Revision 149 as of 2017-06-02 12:25:54 →
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Editor: MarkBarton
Comment:
← Revision 165 as of 2017-07-14 07:14:06 → ⇥
Size: 2069
Editor: MarkBarton
Comment:
Deletions are marked like this. Additions are marked like this.
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At Kamioka (Mark, Fabian, Enzo, Hirata-san): At Kamioka (Mark, Enzo, Yoshioka-kun):
 * We experimented with rearranging the arc weights to accommodate the magic wands and came up with a suitable scheme.
 * We used spare arc weights as extra ballast on the LBB to get it to float, and measured the height for a known load.
 * We put the blocks back under the LBB and unhooked it.
 * We moved the suspension from the tank back to the assembly frame.
 * We craned the LBB rings down onto the LBB but did not remove them yet. (This however is the last crane work in the tank until reinstallation, so the lid does not have to come off again and the pallet can be used for the PI.)
 * We put the crossbars back in the assembly frame underneath the SF and BF (and corrected an error in the height of the BF ones).
 * Enzo started setting up the SR3 rack (with help from Yamamoto-san).
 * We received the real BS optic and gluing tools, and glued the disks and rods into the modified magnet jigs. We also tried the re-made secondary prisms in the gluing jigs and made shims to hold them more securely.
Line 9: Line 17:
 * 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.		 At Mitaka (Fabian and Hirata-san):
 * Hirata-san shipped the optic and gluing tools to Kamioka.
 * Hirata-san did drawings and RFQs for IM/BF/SF ballast masses
 * Fabian worked on the SRx assembly frame.
Line 18: Line 22:
==== Plan for coming weeks ====
For more detail, see [[KAGRA/Subgroups/VIS/TypeB/ToDo]].		 ==== Plan for week of 7/18 ====
Full team at Kamioka from Tue-Fri, except Hirata-san (Tue-Wed only).
 * Glue prisms/magnets on BS.
 * Dismantle suspension.
 * Finish setting up filter service area (mostly already done by Mirapro).
 * Move BF to filter service area.
Line 21: Line 29:
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.		 ==== Plan for week of 7/24 ====
Full team at Kamioka from Mon-Fri, except Hirata-san (Tue-Fri) and Enzo (vacation).
 * Recheck alignment of assembly frame and centering of optical table.
 * Install IM, suspend BS and RM.
Line 33: Line 34:
Week of 6/12:
 * Remove -Y flange cover, replace with cloth cover (or foil).
 * Prepare LBB.
  * Wipe LBB.
  * Loosen or remove LBB hold-down bolts.
  * Attach LBB outriggers and rod receptacles.
  * Lay out slings for LBB damper rings.
 * Prepare LBB Cu ring.
  * Pass into tank.
  * Reassemble on top of slings.
 * Prepare LBB magnet ring.
  * Assemble temporarily.
  * Attach magnets with template.
  * Disassemble.
  * Pass into tank.
  * Reassemble on top of Cu ring.

 * Remove port covers where feedthroughs will go.
 * Crane into tank.		 Vacation Info:
Hirata-san: Thu 7/20 through Mon 7/24
Enzo: Sat 7/22 through Sun 8/6
Fabian: Fri 8/4 through Mon 8/21
Mark: TBD Mid-Oct

Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

Type B (Mark)

Past week report

At Kamioka (Mark, Enzo, Yoshioka-kun):

  • We experimented with rearranging the arc weights to accommodate the magic wands and came up with a suitable scheme.
  • We used spare arc weights as extra ballast on the LBB to get it to float, and measured the height for a known load.
  • We put the blocks back under the LBB and unhooked it.
  • We moved the suspension from the tank back to the assembly frame.
  • We craned the LBB rings down onto the LBB but did not remove them yet. (This however is the last crane work in the tank until reinstallation, so the lid does not have to come off again and the pallet can be used for the PI.)
  • We put the crossbars back in the assembly frame underneath the SF and BF (and corrected an error in the height of the BF ones).
  • Enzo started setting up the SR3 rack (with help from Yamamoto-san).
  • We received the real BS optic and gluing tools, and glued the disks and rods into the modified magnet jigs. We also tried the re-made secondary prisms in the gluing jigs and made shims to hold them more securely.

At Mitaka (Fabian and Hirata-san):

  • Hirata-san shipped the optic and gluing tools to Kamioka.
  • Hirata-san did drawings and RFQs for IM/BF/SF ballast masses
  • Fabian worked on the SRx assembly frame.

Plan for week of 7/18

Full team at Kamioka from Tue-Fri, except Hirata-san (Tue-Wed only).

  • Glue prisms/magnets on BS.
  • Dismantle suspension.
  • Finish setting up filter service area (mostly already done by Mirapro).
  • Move BF to filter service area.

Plan for week of 7/24

Full team at Kamioka from Mon-Fri, except Hirata-san (Tue-Fri) and Enzo (vacation).

  • Recheck alignment of assembly frame and centering of optical table.
  • Install IM, suspend BS and RM.

Vacation Info: Hirata-san: Thu 7/20 through Mon 7/24 Enzo: Sat 7/22 through Sun 8/6 Fabian: Fri 8/4 through Mon 8/21 Mark: TBD Mid-Oct

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