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| * Hirata-san produced a near-final Inventor assembly of the BS on the assembly frame, for use in writing the assembly procedure. * Includes assembly frame modifications suggested by Mirapro, including feet, wheels, lifting eyes, thicker crossbars under BF, IM etc. * Includes final rail system except for interface plate to mirror box. * Includes full PI with ballast masses. * Includes cable clamps. * Includes correct versions of BF and SF. * Includes new BF pushrod parts to work around different placement of blade screws in new version of BF. * Includes cleanbag support bars. * Includes key parts of mirror box (enough to check for interference) - needs more work. * Does not include various invisible duplicate assemblies. * Got status from Miyakawa-san on electronics - there should be enough of the boxes AEL is supplying. * Cleanbag design was finalized; Aso-san is ordering: [[attachment:160419-ﾁｬﾝﾊﾞｰｶﾊﾞｰⅡ型.pdf]] * Quote for flags and prisms was received, but expensive - may drop rigid flag design. * The mirror box will require only very minor modifications for flags and prisms - Tatsumi-san will arrange immediately. * Fabian worked on understanding Sekiguchi-san's control design to help decide optimum wire thickness. * Mark worked on install procedure and schedule. * Takahashi-san enquired with NIKHEF about oscillator cards for LVDT chassis - lead time would be 3-4 months. * |
* Type B Past Week Summary * Fabian, Mark and Liu-kun did BS installation at Kamioka: * They replaced the thrust bearing in the BF with a stainless version. While replacing the picomotor spring, they found several issues with screws. * They removed the sheet metal cable clamp on the bottom of the BF and installed a redesigned one. * They installed the "flying saucer" cable clamp on the maraging rod between the IM and BF, and attached the cables. There was an issue with the cables from the bottom OSEMs, which are too short by about 300 mm. * They suspended the IM. Relative to the mass budget, about 700 g of trim mass had to be taken off to get good balance. There was also a problem with rubbing. It turned out that the keystone and the attached central PEEK coil former for the LVDT were at an angle, and the inside of the coil former was fouling on the outside of the pole piece for the magnets. It's not yet clear why the keystone was misaligned. * Hirata-san: * Made drawings of (revised) stub flag gluing jigs. * Worked on BS full-assembly drawings for Saito-sensei. * (For other groups) * Made a 3D model of maraging wires. * Finished making drawings of PRM inner frame. * Worked on re-setting up PC after crash. * 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) |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
- Type B Past Week Summary
- Fabian, Mark and Liu-kun did BS installation at Kamioka:
- They replaced the thrust bearing in the BF with a stainless version. While replacing the picomotor spring, they found several issues with screws.
- They removed the sheet metal cable clamp on the bottom of the BF and installed a redesigned one.
- They installed the "flying saucer" cable clamp on the maraging rod between the IM and BF, and attached the cables. There was an issue with the cables from the bottom OSEMs, which are too short by about 300 mm.
- They suspended the IM. Relative to the mass budget, about 700 g of trim mass had to be taken off to get good balance. There was also a problem with rubbing. It turned out that the keystone and the attached central PEEK coil former for the LVDT were at an angle, and the inside of the coil former was fouling on the outside of the pole piece for the magnets. It's not yet clear why the keystone was misaligned.
- Hirata-san:
- Made drawings of (revised) stub flag gluing jigs.
- Worked on BS full-assembly drawings for Saito-sensei.
- (For other groups)
- Made a 3D model of maraging wires.
- Finished making drawings of PRM inner frame.
- Worked on re-setting up PC after crash.
- Fabian, Mark and Liu-kun did BS installation at Kamioka:
- 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 E1504235, 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)
- Do Inventor assembly for SRx in chamber and on assembly frame (Hirata) - SR2/SR3 DONE, SRM ongoing.