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| Deletions are marked like this. | Additions are marked like this. |
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| ==== Report for week of 4/9 ==== * Mark glued prisms and magnet/standoff assemblies on the SR3. The SR3 needed to be raised in the box by 0.7 mm to make the prisms go on at the right height, which was done using M4 washers under the PEEK feet. * Mark glued ferromagnetic disks on the last 5 IM flags. This completes 2 sets, for SR3 and SRM. * Mark configured two pico motor drivers ordered by Takahashi-san as SR3-IM and SRM-BF. * Enzo and Kozu-kun finished preparing and calibrating the SF and BF for SR3 and almost entirely finished with those for SRM. * Hirata-san worked on building two IMs for SR3 and SRM. The SR3 one just needs to have flags attached and to be weighed; the SRM needs another few hours work. * Shoda-san worked on the design of the metal SRM, on the LBB ballast mass, and on the plans for testing the BS in bKAGRA Phase 1. |
==== Report for week of 5/28 ==== * Enzo tested the LVDT driver repaired by Tanaka-san - it was fine. * Fujii-kun and Enzo finished assembling a batch of 4 geophones and took test data. * Hirata-san modified some Promec masses (drilling out the threads on 2 of 4 holes) so we could use two layers of them inside the BF. * Hirata-san installed maraging rod receptacles in the LBB damper rings, and in the bottom of PIs #3 and #1 (for the SF damper rings). * After consulting with various people, Hirata-san installed the second half of the LBB top ring in the chamber, simply omitting the pillar and screw associated with the badly threaded hole. * Hirata-san took delivery of the screws for the LBB blade units, made up 9 blade units and installed 6 of them on PI #3 and #1 (for SR3 and SR2). * Hirata-san made up a set of PI cable clamps and installed them on PI #3 (for SR3). * Hirata-san removed the prototype blades from PI #3 to get ready for testing the final blades. * We located the #355 disk and #356 poles for the next level of the security structure up to the SF and installed the poles. * We installed ballast mass in the BF. After some trial and error we settled on 16 Promec masses (7.1 kg) inside the BF and 5 D1808104-4 and 3 D1808104-5 masses (540 g) on the cap. * Enzo and Fujii-kun did several rounds of TFs on the BF/... section of the suspension and debugged a problem with dewhitening filters not being installed in the OSEMINF filter bank. * Enzo installed damping filters for the IM OSEMs. |
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| ==== Plan for week of 4/16 ==== * Shoda-san at Mitaka * Tanioka-san at Kamioka Tue-Thu * Others at Kamioka full week |
==== Plan for week of 5/28 ==== * Mark, Enzo at Kamioka Mon-Fri. * Hirata-san at Kamioka Tue-Fri. (Mon is monthly Mitaka day.) * Matteo at Kamioka from Tue. He may help Type B to get experience. * Kozu-kun at Kamioka Mon only. (Rest of week is job interviews.) |
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| * Move SF and BF for SRM out of the way. * Check results of gluing. * Build 1xRM * Calibrate OSEMs. * Start SR3 Hang * Reset assembly frame crossbars to correct heights. * Center the optical table. * Align the assembly frame vertically. * Install IM ring and IM. * Hang optic. * Hang RM. * Cable RM OSEMs. |
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| ==== Plan for week of 4/23 ==== * Shoda-san at Mitaka * Fujii-san at Mitaka? * Mark, Enzo at Kamioka * Hirata-san at Mitaka * Tanioka-san at Mitaka? |
==== Plan for week of 6/4 ==== * Mark, Enzo, Hirata-san, Kozu-kun at Kamioka Tue-Fri. (Mon is NAOJ medical checkup.) |
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| * Clean parts (cable clamp bases, etc, etc). * Observe KAGRA Phase 1 operations, assist if problems arise. * Continue SR3 hang. |
* Cable and test BF cap picos. * Build up security structure to SF level. * Crane in SF and remove cap. * Hook BF and adjust total ballast. * Route cables through SF-BF flying saucer up to bottom of SF. * Adjust BF trim mass. * Readjust payload. * Take TFs. * Add budgeted ballast mass to SF and weigh SF/... section. * Cable, test SF LVDT and FR. * Characterize final F0 blades. |
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| ==== Plan for week of 4/30 ==== * Golden Week! |
==== Plan for week of 6/11 ==== * Mark Enzo, Hirata-san, Kozu-kun at Kamioka Tue-Fri (Mon is compensation day for f2f.) * -- * Rebuild F0 #3 for SR3. * Park F0 #1 (for SR2) in top of SR3 assembly frame. * Move F0 #3 behind SR3. * Make LBB blade sets (or at least 3 of 9). |
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| * [[KAGRA/Subgroups/VIS/TypeB/March2018]] * [[KAGRA/Subgroups/VIS/TypeB/April2018]] |
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| * Fabian vacation, 3/26-4/27 (then gone). |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
Type B (Mark)
Report for week of 5/28
- Enzo tested the LVDT driver repaired by Tanaka-san - it was fine.
- Fujii-kun and Enzo finished assembling a batch of 4 geophones and took test data.
- Hirata-san modified some Promec masses (drilling out the threads on 2 of 4 holes) so we could use two layers of them inside the BF.
- Hirata-san installed maraging rod receptacles in the LBB damper rings, and in the bottom of PIs #3 and #1 (for the SF damper rings).
- After consulting with various people, Hirata-san installed the second half of the LBB top ring in the chamber, simply omitting the pillar and screw associated with the badly threaded hole.
- Hirata-san took delivery of the screws for the LBB blade units, made up 9 blade units and installed 6 of them on PI #3 and #1 (for SR3 and SR2).
- Hirata-san made up a set of PI cable clamps and installed them on PI #3 (for SR3).
- Hirata-san removed the prototype blades from PI #3 to get ready for testing the final blades.
- We located the #355 disk and #356 poles for the next level of the security structure up to the SF and installed the poles.
- We installed ballast mass in the BF. After some trial and error we settled on 16 Promec masses (7.1 kg) inside the BF and 5 D1808104-4 and 3 D1808104-5 masses (540 g) on the cap.
- Enzo and Fujii-kun did several rounds of TFs on the BF/... section of the suspension and debugged a problem with dewhitening filters not being installed in the OSEMINF filter bank.
- Enzo installed damping filters for the IM OSEMs.
Plan for week of 5/28
- Mark, Enzo at Kamioka Mon-Fri.
- Hirata-san at Kamioka Tue-Fri. (Mon is monthly Mitaka day.)
- Matteo at Kamioka from Tue. He may help Type B to get experience.
- Kozu-kun at Kamioka Mon only. (Rest of week is job interviews.)
- --
Plan for week of 6/4
- Mark, Enzo, Hirata-san, Kozu-kun at Kamioka Tue-Fri. (Mon is NAOJ medical checkup.)
- --
- Cable and test BF cap picos.
- Build up security structure to SF level.
- Crane in SF and remove cap.
- Hook BF and adjust total ballast.
- Route cables through SF-BF flying saucer up to bottom of SF.
- Adjust BF trim mass.
- Readjust payload.
- Take TFs.
- Add budgeted ballast mass to SF and weigh SF/... section.
- Cable, test SF LVDT and FR.
- Characterize final F0 blades.
Plan for week of 6/11
- Mark Enzo, Hirata-san, Kozu-kun at Kamioka Tue-Fri (Mon is compensation day for f2f.)
- --
- Rebuild F0 #3 for SR3.
- Park F0 #1 (for SR2) in top of SR3 assembly frame.
- Move F0 #3 behind SR3.
- Make LBB blade sets (or at least 3 of 9).
To-Do Lists, Schedule