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* Type B Past Week Summary * Mark * Updated the BS circuit diagram [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3600|D1503600]]: * Added information on the binary IO. * Renamed channels to conform to Okutomi-kun's new scheme. * Made the ADC/DAC channel assignment consistent and more logical. * Updated the stepper motor sections with info about the new driver chassis. * Worked on schedule. * Updated the installation procedure with lessons learned from the last few weeks. * Downloaded Hirata-san's Inventor model of the BS in the tank and starting thinking about installation of the suspension and lower bread board. * Mark and Hirata-san worked on collecting parts and tools that will be needed for cabling of the BS next week. (11 special-purpose cables need to be made for the picos/steppers/OSEMs/LVDT on the RM/IRM/IM/BF and, time permitting, 2 more for the SF.) * Hirata-san * Updated the BS 3D Assembly with the new rods and receptacles. * Made 2D drawings of SR2 and SR3 (ongoing). * Made SRM 3D assembly (ongoing) * Asked for and got quotes for hexagon cable clamps. Takahashi-san ordered the PEEK components. Next week Hirata-san will look for parts that should already be at Kamioka. * Washed screws for hexagon cable clamps and shim rings for Fabian. |
=== Type B (Mark) === ==== Report for week of 7/23 ==== * We finished adding cable clamps to the SR2 PI and SF. * We craned in the SR2 PI and installed the PI-SF rod. As expected, there was not quite enough load capacity for even a 2 Cu-segment SF. * We changed the CuBe spring on the SR2 PI from an F2 type to an F1 and got about an extra 2 kg, which is plenty for 2 Cu segments. * We moved the feedthroughs from the SR3 assembly frame to the SR3 tank. Mirapro then moved the assembly frame to the SRM area. Mirapro also moved the duct on the +Y side of the SR3 tank to give us access to that side. * We laid a new set of SR3 in-air cables running directly to the tank. (We will repurpose the original set for SRM.) * We reconnected the SR3 cables on both sides of the feedthroughs. We had to adjust the routing of the in-vacuum ones several times to stop them touching the tank, but we finally found a good solution. * With help from Ohishi-san we removed the First Contact and then unlocked the whole suspension by stages. We need to check the optic pitch and do a little more mechanical adjustment but we were able to take TFs and implement IM and GAS control filters. * Hirata-san and Fujii-kun received most of the SRM metal mass parts, did inventory and practiced some of the key steps in the assembly, especially inserting the Sol-Black coated parts without touching the delicate surfaces. * Mark did inventory of the BIO stuff for the WD and of the OL parts. ==== Plan for week of 7/30 ==== * Mark, Enzo, Hirata-san, Fabian, Kozu-kun, Terrence, Panwei at Kamioka Mon-Fri. * Kozu-kun works at Mozumi Mon, Fri, and Thu afternoon. ===== SR3 ===== * Finalize optic pitch, OSEM alignment. * Hook LBB, add ballast mass, set up temporary OL (horizontal beam, pitch/yaw only). * Identify/acquire items required for final OL (steering mirrors, second QPD, lens, collimator). ===== SR2 ===== * Fix issue with PI/SS/chain alignment. * Put magnets on SR damper ring (2 Cu segment pattern). * Remove PI-SF rod temporarily, install Cu segments and damper ring. * Do vertical height budget; choose optimum F0 keystone height. * Add estimated final ballast mass. * Do PI cable routing. * Adjust ballast/trim mass, with reserve for cables. ===== SRM ===== * Set up filter tuning area. * Tune F0 for SRM. * Add LBB blade units, cable clamps etc. * Check PI coil connections, IP LVDT magnets. ==== To-Do Lists, Schedule ==== * [[KAGRA/Subgroups/VIS/TypeB/ToDoBS]] * [[KAGRA/Subgroups/VIS/TypeB/ToDoSR]] * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7779|JGW-L1807779 Type B Schedule (SR)]] ==== Vacation Info ==== * Terrence: 8/24-26 f2f, then returns to Hong Kong. * Enzo: 9/14 JPS, 9/15 through 10/8 vacation in Chile. |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
Type B (Mark)
Report for week of 7/23
- We finished adding cable clamps to the SR2 PI and SF.
- We craned in the SR2 PI and installed the PI-SF rod. As expected, there was not quite enough load capacity for even a 2 Cu-segment SF.
We changed the CuBe spring on the SR2 PI from an F2 type to an F1 and got about an extra 2 kg, which is plenty for 2 Cu segments.
- We moved the feedthroughs from the SR3 assembly frame to the SR3 tank. Mirapro then moved the assembly frame to the SRM area. Mirapro also moved the duct on the +Y side of the SR3 tank to give us access to that side.
- We laid a new set of SR3 in-air cables running directly to the tank. (We will repurpose the original set for SRM.)
- We reconnected the SR3 cables on both sides of the feedthroughs. We had to adjust the routing of the in-vacuum ones several times to stop them touching the tank, but we finally found a good solution.
- With help from Ohishi-san we removed the First Contact and then unlocked the whole suspension by stages. We need to check the optic pitch and do a little more mechanical adjustment but we were able to take TFs and implement IM and GAS control filters.
- Hirata-san and Fujii-kun received most of the SRM metal mass parts, did inventory and practiced some of the key steps in the assembly, especially inserting the Sol-Black coated parts without touching the delicate surfaces.
- Mark did inventory of the BIO stuff for the WD and of the OL parts.
Plan for week of 7/30
- Mark, Enzo, Hirata-san, Fabian, Kozu-kun, Terrence, Panwei at Kamioka Mon-Fri.
- Kozu-kun works at Mozumi Mon, Fri, and Thu afternoon.
SR3
- Finalize optic pitch, OSEM alignment.
- Hook LBB, add ballast mass, set up temporary OL (horizontal beam, pitch/yaw only).
- Identify/acquire items required for final OL (steering mirrors, second QPD, lens, collimator).
SR2
- Fix issue with PI/SS/chain alignment.
- Put magnets on SR damper ring (2 Cu segment pattern).
- Remove PI-SF rod temporarily, install Cu segments and damper ring.
- Do vertical height budget; choose optimum F0 keystone height.
- Add estimated final ballast mass.
- Do PI cable routing.
- Adjust ballast/trim mass, with reserve for cables.
SRM
- Set up filter tuning area.
- Tune F0 for SRM.
- Add LBB blade units, cable clamps etc.
- Check PI coil connections, IP LVDT magnets.
To-Do Lists, Schedule
Vacation Info
- Terrence: 8/24-26 f2f, then returns to Hong Kong.
- Enzo: 9/14 JPS, 9/15 through 10/8 vacation in Chile.