|
Size: 2556
Comment:
|
Size: 2669
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 7: | Line 7: |
| At Kamioka (Mark, Enzo, Simon, Type Bp team): * Mark remade the BF pico adapter cable which was poorly made and had also been damaged. * The Type Bp team tided up the BS rack and made new labels for many cables (thanks!). * Enzo connected up the in-air cables for the picos and steppers. * Mark and Enzo renumbered the PI LVDTs, geophones and LVDTs to make a consistent scheme working anticlockwise. * Enzo and Mark debugged all the cables. The only problem we couldn't solve was that the actuator coil for PI LVDT #0 is open-circuit at the connector on the LVDT. (It has been intermittent but worked before the craning.) We may have to redo the connector or replace the LVDT. Limited TFs will be possible in the next week. * Simon set up the LSOL and was easily able to get a return beam from the mirror on the dummy BS. * Shoda-san copied over the LSOL section of the PR3 real-time model into the BS model and made other improvements (thanks!). * Mark brought home |
At Kamioka (Mark, Enzo, Hirata-san, Yoshioka-kun): * We disassembled the suspension. * We removed all the cables and bagged and labelled them for reuse. * The PI is parked on the pallet. * The SF was initially parked between the frame and tank and then manhandled to one side. The same procedure was used for the SF ring. * The BF was parked between the assembly frame and tank. The BF ring was stored in the top of the structure. * We removed various useful and no-longer-needed items from the BF, including the lower rod receptacle, thrust bearing, fishing rod and temporary ballast masses. * We cut the wires and removed the RM and dummy BS on the RM trolley. * The wire clamps were moderately deeply scarred and could probably be reused, but we plan to use the new set, which will be available on Tuesday of next week. * We discovered that the problem with the old BF was due to the fishing rod, which had not had a pair of lock nuts and had been damaged by being drive too high, so that the springs hit the underside of the cap and were bent at the base. We will install lock nuts and set them to the correct height for the final installation. * The gluing of the BS primary prisms and magnets went well, but we had to reglue the secondary prisms because they stuck to the jigs and were pulled off when the jigs were retracted. The second try went well and the BS is ready for use. * Fabian and Hirata-san characterized 7 new BS BF blades. There was one outlier but the rest were in a tight group. * Hirata-san used 3 of the blades to build a new BF. * Miyo-kun and others from the Type Bp team did a lot of tidying up of the BS rack for us, and removed a lot of in-air cables running through the cleanbooth. When he returns, on 8/8, Enzo will coordinate relaying the cables in the cable trays (which were not installed when the initial cabling was done). |
| Line 17: | Line 22: |
| At Mitaka (Fabian, Hirata-san): * Fabian finished designing final trim masses for IM/BF/SF for the final hang of the BS and passed it to Hirata-san to make drawings and get quotes. * Hirata-san requested quotes for the replaceable-jaw version of the BS wire clamps. * Fabian and Hirata-san gathered needed items for the BS prism/flag gluing. * Hirata-san designed receptacles for the new rods with 8 mm heads and requested quotes. |
|
| Line 23: | Line 23: |
| ==== Plan for week of 7/3 ==== * Do prism/flag gluing on real BS at Kashiwa (whole team). * Do new 3D CAD (Hirata-san): * SR2 on BS assembly frame. (Adjust jack positions if possible, or leave for Fabian/Mark to do.) * Final BS build, SS/PI/SF as for Test Hang but with BF/IRM/IM/BS/RM down rotated back to original direction. * On-assembly-frame version. (Adjust jack positions if possible, or leave for Mark to do.) * In-tank version. * Solve arc weight versus magic wand problem. * Do mass budget for LBB - design ballast masses (Fabian) * Run TFs, make improvements to real-time model (Mark, Enzo). |
==== Plan for week of 7/31 ==== Full team at Kamioka from Mon-Fri, except Hirata-san (Tue-Thu) and Enzo (vacation). * Recheck alignment of assembly frame and centering of optical table. * Install IM, suspend BS and RM. * Remove LBB rings (time permitting). |
| Line 34: | Line 29: |
| ==== Plan for week of 7/10 ==== Mark and Enzo at Kamioka: * Fix broken LVDT actuator coil. * Learn how Miyo-kun's pico driver software works and make improvements. * Test picos and steppers more fully. * Finish tidying rack and labeling cables. Fabian and Hirata-san at Mitaka. * Design SR assembly frame. * Inventory for SR. |
==== Plan for week of 8/7 ==== Full team at Kamioka from Mon-Fri, except Fabian (Mon-Wed) and Enzo (Tue-Fri). * Weigh/trim BS/RM/IM. * Take out old BF; bring in rebuilt BF. * Suspend BS/RM/IM, add IRM. * Lay new in-air OSEM cables. Vacation Info: Enzo: Sat 7/22 through Sun 8/6 Fabian: Fri 8/4 through Mon 8/21 Mark: TBD Mid-Oct |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
Type B (Mark)
Past week report
At Kamioka (Mark, Enzo, Hirata-san, Yoshioka-kun):
- We disassembled the suspension.
- We removed all the cables and bagged and labelled them for reuse.
- The PI is parked on the pallet.
- The SF was initially parked between the frame and tank and then manhandled to one side. The same procedure was used for the SF ring.
- The BF was parked between the assembly frame and tank. The BF ring was stored in the top of the structure.
- We removed various useful and no-longer-needed items from the BF, including the lower rod receptacle, thrust bearing, fishing rod and temporary ballast masses.
- We cut the wires and removed the RM and dummy BS on the RM trolley.
- The wire clamps were moderately deeply scarred and could probably be reused, but we plan to use the new set, which will be available on Tuesday of next week.
- We discovered that the problem with the old BF was due to the fishing rod, which had not had a pair of lock nuts and had been damaged by being drive too high, so that the springs hit the underside of the cap and were bent at the base. We will install lock nuts and set them to the correct height for the final installation.
- The gluing of the BS primary prisms and magnets went well, but we had to reglue the secondary prisms because they stuck to the jigs and were pulled off when the jigs were retracted. The second try went well and the BS is ready for use.
- Fabian and Hirata-san characterized 7 new BS BF blades. There was one outlier but the rest were in a tight group.
- Hirata-san used 3 of the blades to build a new BF.
- Miyo-kun and others from the Type Bp team did a lot of tidying up of the BS rack for us, and removed a lot of in-air cables running through the cleanbooth. When he returns, on 8/8, Enzo will coordinate relaying the cables in the cable trays (which were not installed when the initial cabling was done).
Plan for week of 7/31
Full team at Kamioka from Mon-Fri, except Hirata-san (Tue-Thu) and Enzo (vacation).
- Recheck alignment of assembly frame and centering of optical table.
- Install IM, suspend BS and RM.
- Remove LBB rings (time permitting).
Plan for week of 8/7
Full team at Kamioka from Mon-Fri, except Fabian (Mon-Wed) and Enzo (Tue-Fri).
- Weigh/trim BS/RM/IM.
- Take out old BF; bring in rebuilt BF.
- Suspend BS/RM/IM, add IRM.
- Lay new in-air OSEM cables.
Vacation Info: Enzo: Sat 7/22 through Sun 8/6 Fabian: Fri 8/4 through Mon 8/21 Mark: TBD Mid-Oct