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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. * Mark installed a BIO card in the PR2 rack and added cables from the TM voltage and current monitors to as-yet unused IM OSEM inputs to check the calibration. * Fabian wrapped the assembly frame in cling wrap to see if it helped with wind during TFs. * 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) === ==== Report for week of 7/9 ==== * We cleaned up after the heavy rain. There was no significant damage but some cardboard boxes of parts got wet and the contents needed to be moved to other containers and the boxes discarded. Water collected on the SR2 crane slot cover and had to be vacuumed away before the cover could be opened. A new section of corrugated roof was installed to minimize the problem for the future. * Enzo and team got all of the in-vacuum and in-air cables for the SF/... and PI properly routed and tested except (so far) for the geophones. * Hirata-san and team finished tuning of the F0 for SR2 and moved the PI into the SR2 cleanbooth. It turns out to be about 8 kg weaker than for SR3, whereas the SR2 chain is only 3 kg lighter, so we will have to do some combination of decompression, removing Cu segments and using a stronger CuBe spring (e.g., a Type A F0 FR blade instead of the F2 one in SR3). We closed the floor in the SRM area for safety, but we will probably reopen it as soon as next week for the SRM F0 build. * Hirata-san opened the SR3 tank, craned the LBB damper ring sandwich up to the top of the tank and suspended it. * Enzo and team corrected a lot of flipped connections on the SR3 PI LVDTs (primary<->secondary on the horizontal, primary<->actuation on the F0). * We added the arc weights and geophones and re-centered the IP. It seems stable and very soft, which is good. |
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| ==== Plan for week of 7/9 ==== ==== Plan for week of 7/16 ==== * Monday 7/16 is Sea Day. * Mark, Enzo, Hirata-san, Kozu-kun, Terrence at Kamioka Tue-Fri. ===== Main Sequence ===== * Check/restore alignment of payload, especially optic pitch. * Testing, TFs. * Lock suspension. * Crane into tank. * Unlock suspension. * Rearrange cables. * Test. ===== F0/LBB Stuff ===== * Install correct IP in PI #2. * Crane PI #2 to second floor. * Rebuild top filter of PI #2. ==== To-Do Lists, Schedule ==== * [[KAGRA/Subgroups/VIS/TypeB/ToDoBS]] * [[KAGRA/Subgroups/VIS/TypeB/ToDoSR]] * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7779|JGW-L1807779 Type B Schedule (SR)]] ==== Vacation Info ==== * Terrence: 8/24-26 f2f, then returns to Hong Kong. * Enzo: 9/14 JPS, 9/15 through 10/8 vacation in Chile. |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
Type B (Mark)
Report for week of 7/9
- We cleaned up after the heavy rain. There was no significant damage but some cardboard boxes of parts got wet and the contents needed to be moved to other containers and the boxes discarded. Water collected on the SR2 crane slot cover and had to be vacuumed away before the cover could be opened. A new section of corrugated roof was installed to minimize the problem for the future.
- Enzo and team got all of the in-vacuum and in-air cables for the SF/... and PI properly routed and tested except (so far) for the geophones.
Hirata-san and team finished tuning of the F0 for SR2 and moved the PI into the SR2 cleanbooth. It turns out to be about 8 kg weaker than for SR3, whereas the SR2 chain is only 3 kg lighter, so we will have to do some combination of decompression, removing Cu segments and using a stronger CuBe spring (e.g., a Type A F0 FR blade instead of the F2 one in SR3). We closed the floor in the SRM area for safety, but we will probably reopen it as soon as next week for the SRM F0 build.
- Hirata-san opened the SR3 tank, craned the LBB damper ring sandwich up to the top of the tank and suspended it.
Enzo and team corrected a lot of flipped connections on the SR3 PI LVDTs (primary<->secondary on the horizontal, primary<->actuation on the F0).
- We added the arc weights and geophones and re-centered the IP. It seems stable and very soft, which is good.
Plan for week of 7/9
Plan for week of 7/16
- Monday 7/16 is Sea Day.
- Mark, Enzo, Hirata-san, Kozu-kun, Terrence at Kamioka Tue-Fri.
Main Sequence
- Check/restore alignment of payload, especially optic pitch.
- Testing, TFs.
- Lock suspension.
- Crane into tank.
- Unlock suspension.
- Rearrange cables.
- Test.
F0/LBB Stuff
- Install correct IP in PI #2.
- Crane PI #2 to second floor.
- Rebuild top filter of PI #2.
To-Do Lists, Schedule
Vacation Info
- Terrence: 8/24-26 f2f, then returns to Hong Kong.
- Enzo: 9/14 JPS, 9/15 through 10/8 vacation in Chile.