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Size: 1532
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Deletions are marked like this. | Additions are marked like this. |
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At Kamioka (Mark, Fabian, Enzo, Perry, Hirata-san): | |
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* Craned in the PI. * Assembled the thrust bearing holder that receives the PI-SF rod. (It originally had a burr that prevented the bearing from seating properly, and so required filing and re-cleaning.) * Hooked the SF and lowered the jacks under the SF to suspend the SF/... section. * The top filter rose when unlocked, and required about 1.8 kg to send it back down. Therefore we may be OK - the top filter seems to have about 8 kg more capacity than as measured by G&M. The hex cable clamp (≈0.25 kg) and the cables between the PI and SF still have to be added, but we can get an extra 3 kg by removing one of the three Cu damper segments (and rearranging the other two). * Built and installed three LBB blade units. * Kept debugging the SF LVDT. We repaired several broken wires, but it's still not behaving correctly. |
* Mark analyzed the QPD data from Friday 12/1 and derived matrices to diagonalize the QPD, and calibrate output in µrad. In the process an error in the IM OSEM diagonalization was discovered: the P and Y gains were low by a factor 2. * Mark re-zeroed the QPD after noting the micrometer readings so we can do TFs over the weekend. * We prepared for the SR2 gluing: * We aligned the SR2 in the box with the wedge on the correct side. * We checked that the remachined BS prism holders fit on the PR2 mirror box. * We checked that with Tatsumi-san's support ring, the prisms would go on at the right height. * We checked the new magnet jigs. * We glued ferromagnetic disks in a large number of IM flag tips and flag bases, and in the SR magnet jigs. * We also glued SR magnets in the magnet bases. |
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==== Plan for coming weeks ==== For more detail, see [[KAGRA/Subgroups/VIS/TypeB/ToDo]]. |
==== Plan for week of 12/11 * Mark, Fabian, Enzo, Kozu-kun (Mon-Thu only), Hirata-san, Shoda-san at Kamioka. * Mirror gluing. * IM assembly and pico test. * Assembly frame alignment and optical table centering. * Move trolley system from SR3. * OL setup. |
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Week of 5/1: * No activity (Golden Week). |
==== Plan for week of 12/18 ==== * Shoda-san vacation * Mark, Fabian, Enzo, Kozu-kun at Kamioka Mon-Wed. |
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Week of 5/8: * Work from Tuesday. * Remove PI temporarily. * Add magnets to upper SF damper ring. * Reinstall PI with damper ring. * Reinstall PI-SF rod, this time with hex cable clamp. * Install PI yaw stepper. * Wire up PI yaw and vertical steppers. * Route cables from SF to PI (may involve removing part of Cu damper). |
==== Vacation Info ==== * Mark 12/22-1/3 * Enzo, 12/21-12/27 (but ''not'' 12/28) * Fabian 12/22-1/5 * Hirata-san 12/21-22 (conference) * Shoda-san 12/18-21 |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
Type B (Mark)
Past week report
- Mark analyzed the QPD data from Friday 12/1 and derived matrices to diagonalize the QPD, and calibrate output in µrad. In the process an error in the IM OSEM diagonalization was discovered: the P and Y gains were low by a factor 2.
- Mark re-zeroed the QPD after noting the micrometer readings so we can do TFs over the weekend.
- We prepared for the SR2 gluing:
- We aligned the SR2 in the box with the wedge on the correct side.
- We checked that the remachined BS prism holders fit on the PR2 mirror box.
- We checked that with Tatsumi-san's support ring, the prisms would go on at the right height.
- We checked the new magnet jigs.
- We glued ferromagnetic disks in a large number of IM flag tips and flag bases, and in the SR magnet jigs.
- We also glued SR magnets in the magnet bases.
==== Plan for week of 12/11
- Mark, Fabian, Enzo, Kozu-kun (Mon-Thu only), Hirata-san, Shoda-san at Kamioka.
- Mirror gluing.
- IM assembly and pico test.
- Assembly frame alignment and optical table centering.
- Move trolley system from SR3.
- OL setup.
Plan for week of 12/18
- Shoda-san vacation
- Mark, Fabian, Enzo, Kozu-kun at Kamioka Mon-Wed.
Vacation Info
- Mark 12/22-1/3
Enzo, 12/21-12/27 (but not 12/28)
- Fabian 12/22-1/5
- Hirata-san 12/21-22 (conference)
- Shoda-san 12/18-21