|
Size: 2200
Comment:
|
Size: 3541
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 5: | Line 5: |
| * Type B Past Week Summary * There were multiple issues with the dummy BS flag/prism gluing [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=1830 |klog]]. The sapphire prisms will need to be removed and reapplied. Hirose-san is going to organize this. He wants to try the cup that had been made for the PR2 on the actual PR2 and then see if a new cup is needed for the BS (considering the different radius). * Hirata-san added the optical layout information to the BS Inventor assembly. He requested tank information from Mirapro so he can continue to do SR2/3/M. * Fabian finished the IM assembly and started on the IRM and RM. Some of the IRM panels had been improperly wrapped and really should be re-cleaned. The MPC (multi-purpose cube) on the RM will need some rework. * Mark scheduled a review for Thursday 6/16. * Type B ongoing issues * Wires * Need to decide RM wire thickness and order BS and RM wires. Lead time is a few days from Nilaco. * OSEMs * Feedthrough Adapters * Need large quantity of male and female D-Sub 9, IDC ribbon connectors - Takahashi-san is getting a quote. * Can we make SR wire breakers bigger? * Fukushima-san will start on machining test soon (as of 5/27). * Not enough crane height problem (Hirata, Saito) - no action since last week * Installation stuff * Crane scale - quote received * Work platforms - RECEIVED * Ballast masses for payload * Initial batch received - ordered extra smaller ones to allow for adjustments. * Lower breadboard stuff * Installation to be incorporated into the procedure document. Mark/Takahashi to discuss. * Breadboard springs (in manufacture, expected end of July) * Nail-head parts: quote from Mirapro received, not urgent, will be combined with assembly frame order. * Clean bag - RECEIVED. * Documents * BS Assembly Procedure [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4235| E1504235]], [[https://onedrive.live.com/redir?resid=D5CCFA70A378E0D0!195&authkey=!AM_usynuo9QI57g&ithint=folder,webloc|E1504235 draft]] |
=== Type B (Mark) === ==== Report for week of 7/2 ==== * We double-checked the bounce frequency and it was indeed around 0.5 Hz with the CuBe auxiliary spring installed. * We prepared (but did not yet install) 6 arc weights for tuning the IP. * We unlocked the security structure from the assembly frame, and raised the whole system on the top jacks. We then unlocked the IP and adjusted the leveling so the IP was centered. We then had to loosen two of the poles at the top level of the security structure to make it vertical again, because it turns out that the jack receptacles (which also serve as the IP leg bases) are welded at very uneven depths in the bottom surface of the PI, so the IP and the bottom surface can't be level at once. * We debugged an issue with the height of the payload. It turns out that due to a buildup of errors (especially an extra 3 mm between the SF and BF), the payload is some 5-6 mm low with the F0 keystone at CAD height. Since the frequency is roughly independent of height around 0.5 Hz, we decided to go with a higher F0 keystone. * Enzo and Eleonora routed all the SF/... cables up to the PI. * We found we needed 4.7 kg of extra mass to get the desired keystone height, so we decided to put the third Cu segment (3.3 kg) back on, purely as ballast. * We put some extra small masses on the SF cap to level it. The suspension is now fully ballasted and trimmed except for 1 Promec mass (455 g) standing in for the new PI yaw stepper motor assembly (estimated 330 g) which is yet to arrive. * We took all the SR sat amps back to Mozumi to get new capacitors installed, and grabbed three spares for use while that is being done. * We investigated and documented Tanaka-san's watchdog for the BS, to see if the BIO Converter chassis that it uses could also drive reset lines for stepper motor driver boxes. * Hirata-san and Terrence characterized the last 4 F0 blades. * Hirata-san and Terrence installed blades in the top filter for SR2 and tuned it to 0.5 Hz (with the CuBe auxiliary spring) over three rounds of compression. ==== Plan for week of 7/9 ==== * Mark, Enzo, Hirata-san, Kozu-kun, Terrence at Kamioka Mon-Fri. * -- ===== Main Sequence ===== * Check/restore alignment of payload, especially optic pitch. * Install and cable geophones. * Install arc weights. * Tune IP. * Install, cable PI yaw stepper. * Make three in-air stepper splitter cables for SR2, SR3 and SRM. * Calibrate PI LVDTs and FRs. * Cabling, testing, TFs. ===== F0/LBB Stuff ==== * Finalize PI #1 for SR2; crane into SR2 cleanbooth. * Remove SR3 tank lid, crane LBB rings to top of lower half of the tank, clamp in position. * Set tank jacks to nominal height. * Clear space for PI #2 (SRM) work. === Plan for week of 7/16 === ===== Main Sequence ===== * Lock suspension. * Crane into tank. * Unlock suspension. * Rearrange cables. * Test. ===== F0/LBB Stuff ===== * Install correct IP in PI #2. * Crane PI #2 to second floor. * Rebuild top filter of PI #2. ==== 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 7/2
We double-checked the bounce frequency and it was indeed around 0.5 Hz with the CuBe auxiliary spring installed.
- We prepared (but did not yet install) 6 arc weights for tuning the IP.
- We unlocked the security structure from the assembly frame, and raised the whole system on the top jacks. We then unlocked the IP and adjusted the leveling so the IP was centered. We then had to loosen two of the poles at the top level of the security structure to make it vertical again, because it turns out that the jack receptacles (which also serve as the IP leg bases) are welded at very uneven depths in the bottom surface of the PI, so the IP and the bottom surface can't be level at once.
- We debugged an issue with the height of the payload. It turns out that due to a buildup of errors (especially an extra 3 mm between the SF and BF), the payload is some 5-6 mm low with the F0 keystone at CAD height. Since the frequency is roughly independent of height around 0.5 Hz, we decided to go with a higher F0 keystone.
- Enzo and Eleonora routed all the SF/... cables up to the PI.
- We found we needed 4.7 kg of extra mass to get the desired keystone height, so we decided to put the third Cu segment (3.3 kg) back on, purely as ballast.
- We put some extra small masses on the SF cap to level it. The suspension is now fully ballasted and trimmed except for 1 Promec mass (455 g) standing in for the new PI yaw stepper motor assembly (estimated 330 g) which is yet to arrive.
- We took all the SR sat amps back to Mozumi to get new capacitors installed, and grabbed three spares for use while that is being done.
- We investigated and documented Tanaka-san's watchdog for the BS, to see if the BIO Converter chassis that it uses could also drive reset lines for stepper motor driver boxes.
- Hirata-san and Terrence characterized the last 4 F0 blades.
Hirata-san and Terrence installed blades in the top filter for SR2 and tuned it to 0.5 Hz (with the CuBe auxiliary spring) over three rounds of compression.
Plan for week of 7/9
- Mark, Enzo, Hirata-san, Kozu-kun, Terrence at Kamioka Mon-Fri.
- --
Main Sequence
- Check/restore alignment of payload, especially optic pitch.
- Install and cable geophones.
- Install arc weights.
- Tune IP.
- Install, cable PI yaw stepper.
- Make three in-air stepper splitter cables for SR2, SR3 and SRM.
- Calibrate PI LVDTs and FRs.
- Cabling, testing, TFs.
===== F0/LBB Stuff ====
- Finalize PI #1 for SR2; crane into SR2 cleanbooth.
- Remove SR3 tank lid, crane LBB rings to top of lower half of the tank, clamp in position.
- Set tank jacks to nominal height.
- Clear space for PI #2 (SRM) work.
Plan for week of 7/16
Main Sequence
- Lock suspension.
- Crane into tank.
- Unlock suspension.
- Rearrange cables.
- Test.
F0/LBB Stuff
- Install correct IP in PI #2.
- Crane PI #2 to second floor.
- Rebuild top filter of PI #2.
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.