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| Deletions are marked like this. | Additions are marked like this. |
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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): * We disconnected the in-vacuum and in-air cabling from the feedthroughs. * We removed crossbars below BF and SF. * We set the SF damper to 4 mm clearance. * We adjusted the jacks to nominal height. * We removed the geophones and PI yaw stepper for craning. * We craned the suspension into the tank, and hooked the LBB Cu ring. * We replaced the geophones etc. * We unlocked all but the IP and adjusted the jacks until the pendulum was centered in the security structure. * We unlocked the IP and adjusted to to center with the jacks and fishing rods. * We craned the vacuum tank lid+ring back on, and then removed just the lid (only). * We unclamped the LBB damper rings and removed the spacers. * We removed the blocks and shims supporting the LBB, inserted the long screw feet and hooked the LBB to the Cu damper ring. * We added 2*31.5 kg of ballast to the LBB, which got the blades to the point where firm pressure would depress the tips. * We reconnected the in-vacuum cabling. In ≈15 places we opted to omit the Type 1 cable and use a F-F gender bender. * We reconnected all but four of the in-air cables. |
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| ==== Plan for week of 6/26 ==== Mark and Enzo at Kamioka: * Double-check where gender-benders were used. * Finish connecting in-air cabling. * Debug all cabling. * Work with Simon to set up LSOL. Fabian at Mitaka: * Design final ballast masses for IM, BF and SF assuming no BF rebuild (needs to be adaptable). * Check all items for BS flag/prism gluing are available (prisms, flags, jigs, mirror box, glue, scale, mixing tools etc). Hirata-san at Mitaka: * Do new 3D CAD: * BS Test Hang build, with top of tank, full suspension, and LBB damper all reversed. * Final BS build, as above, but with everything BF down rotated back to original. * In-tank version. * On-assembly-frame version. (Adjust jack positions if possible, or leave for Mark to do.) * SR2 on BS assembly frame. (Adjust jack positions if possible, or leave for Mark to do.) |
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):
- We disconnected the in-vacuum and in-air cabling from the feedthroughs.
- We removed crossbars below BF and SF.
- We set the SF damper to 4 mm clearance.
- We adjusted the jacks to nominal height.
- We removed the geophones and PI yaw stepper for craning.
- We craned the suspension into the tank, and hooked the LBB Cu ring.
- We replaced the geophones etc.
- We unlocked all but the IP and adjusted the jacks until the pendulum was centered in the security structure.
- We unlocked the IP and adjusted to to center with the jacks and fishing rods.
- We craned the vacuum tank lid+ring back on, and then removed just the lid (only).
- We unclamped the LBB damper rings and removed the spacers.
- We removed the blocks and shims supporting the LBB, inserted the long screw feet and hooked the LBB to the Cu damper ring.
- We added 2*31.5 kg of ballast to the LBB, which got the blades to the point where firm pressure would depress the tips.
- We reconnected the in-vacuum cabling. In ≈15 places we opted to omit the Type 1 cable and use a F-F gender bender.
- We reconnected all but four of the in-air cables.
Plan for week of 6/26
Mark and Enzo at Kamioka:
- Double-check where gender-benders were used.
- Finish connecting in-air cabling.
- Debug all cabling.
- Work with Simon to set up LSOL.
Fabian at Mitaka:
- Design final ballast masses for IM, BF and SF assuming no BF rebuild (needs to be adaptable).
- Check all items for BS flag/prism gluing are available (prisms, flags, jigs, mirror box, glue, scale, mixing tools etc).
Hirata-san at Mitaka:
- Do new 3D CAD:
- BS Test Hang build, with top of tank, full suspension, and LBB damper all reversed.
- Final BS build, as above, but with everything BF down rotated back to original.
- In-tank version.
- On-assembly-frame version. (Adjust jack positions if possible, or leave for Mark to do.)
- SR2 on BS assembly frame. (Adjust jack positions if possible, or leave for Mark to do.)