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* Activity report for weeks of 12/26 and 1/2 | === Type B (Mark) === ==== Past week report ==== At Kamioka (Mark, Fabian, Enzo, Perry, Hirata-san): |
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{{{ Dear Mark, |
* 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. |
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I did for Type-B as below, ・modified parts list and screw list for Payload. ・sent lists to i-ject and asked for quotes. (But we need to send latest list again.) ・made drawings for some jigs and some parts for payload. |
==== Plan for coming weeks ==== For more detail, see [[KAGRA/Subgroups/VIS/TypeB/ToDo]]. |
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For PR ・searched glueing jigs. ・washed and assembled recoilmass base for mirror hanging jigs, and sent them to Kamioka. ・washed additional masses for IM and sent them to Kamioka. |
Week of 5/1: * No activity (Golden Week). |
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For others ・washed IMMT plate and send them to Kamioka. Best regards, Hirata }}} {{{ Hello, Succinctly, it is as follows: 1. Mechanical design: a. Pull down system to fix the power recycling IM to the EQ stop. b. EQ stop for the BS recoil mass. 2. Checked assembly PR/SR drawings. There were few corrections/changes. 3. Checked fastener list. There were few corrections/changes. 4. Checked component list for the manufacture order. There were few corrections/changes. 5. I helped in searching for the PR mirror box missing pieces at Mitaka. Regards, Fabian }}} |
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). |
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, Perry, Hirata-san):
- 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.
Plan for coming weeks
For more detail, see KAGRA/Subgroups/VIS/TypeB/ToDo.
Week of 5/1:
- No activity (Golden Week).
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).