|
Size: 3228
Comment:
|
Size: 3314
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 6: | Line 6: |
| ==== Report for week of 3/26 ==== | ==== Report for week of 10/29 ==== * SRM * Enzo realized that he could cover the next round of needed cables with more cable soldering and did another batch. Because Yamamoto-san's lab was running low on isopropanol, Hirata-san washed them with ethanol at Mozumi. * Enzo worked out the optimum output resistance for the LPCDs to substitute for HPCDs with the horizontal IM OSEMs. The value was quite close to that already chosen for modified LPCDs by the cryogenic group, so we're going to standardize. The modified LPCDs will have to be operated with the internal watchdog disabled for now. * Fabian finished adding the TM OSEM cables and tested them. * We reconfigured the top of the assembly frame in preparation for the PI (removing crossbars and moving jacks down). * Hirata-san put the magnets on the SF damper and we hooked it to the PI, attached the #353 poles and craned the PI into the assembly frame. * We installed the F0-SF rod and flying saucer and suspended the SF/... section. We had plenty of spare load capacity, so we changed the CuBe spring to a weaker one and put 2.3 kg of ballast on the SF cap. * We reduced the trim mass on the BF to compensate for the mass of the TM OSEM cables. * Measured all the bounce frequencies. * Hirata-san put magnets on the LBB damper magnet ring, put the pieces into the tank and assembled them into a sandwich ready for craning. * SR2 * Hirata-san unclamped the LBB damper rings and suspended the LBB. It still needs ballast mass and is currently sitting high, with the blades at their upper stops. |
| Line 8: | Line 20: |
| BFs: * BF No. 1: * Fujii-san finished tuning. Optimal load: 52.15[kg]. Resonance frequency: 0.37[Hz]. Optimal height: 64.7[mm]. * We wired the LVDT, Picomotor and Steppermotor. * We measured the keystone tilt at different points and the diferences are within 0.1[mm] * We added cable clamps to the base. * BF No.7: * Tanioka-san and Fujii-san replaced the blades corresponding to the BS for the SR type blades. * The yoke position was corrected. * The fishing rod was assembled. * Compression tuning is ongoing.?? SFs: * Hirata-san and Tanioka-san set up the frame to check the SFs. * SF (B2-5): * Hirata-san, Fujii-san and Tanioka-san checked the optimal load with and without cap. The optimal load changes about 250[g]. The cap didn't came out smoothly. * We measured the keystone tilt at different points, and the diferences are within 0.1[mm] (65.5, 65.5, 65.5, 65.4) * SF (B2-6): * Hirata-san, Fujii-san and Tanioka-san checked the optimal load with and without cap (On going?). * We measured the keystone tilt at different points, and the diferences are within 0.3[mm] (63.7, 63.5,63.8, 63.8) SR3/SRM: * Kozu-kun and Enzo finished the SR3 in-air cabling. * Enzo prepared the SR3 and SRM rack in parallel (On going). SR2: * Hirata-san tested the safety bars in the SR2 area. * We got new power supply for the SR2 Rack. Before, the power was coming from the BS rack. BS: * Kozu-kun and Enzo helped Enomoto-san troubleshooting the BS Oplev issue (On going). Shipping: * We received the LBB parts for SR2. * We received the Payload parts (IM and IRM) this morning. ==== Plan for week of 4/2 ==== * Mark at Mitaka Mon, Kamioka from Tue. * Shoda-san at Mitaka * Others at Kamioka * -- * Finish BFs tasks (cabling +calibration) * Finish SFs tasks (cabling +calibration) * Add cable clamps to bases. * Add cable clamps and Cu segments to caps (only if they fit well). * Build 2xIM, 2xIRM * Glue SR3 mirror? ==== Plan for week of 4/9 ==== * Shoda-san at Mitaka * Fujii-san at Mitaka * Tanioka-san at Mitaka? * Others at Kamioka * -- * Finish IMs and IRMs * Build 1xRM * Glue SR3 mirror? ==== Plan for week of 4/16 ==== * Shoda-san at Mitaka * Fujii-san at Mitaka * Tanioka-san at Mitaka? * Others at Kamioka * -- * Start SR3 Hang? ==== Plan for week of 4/23 ==== * Shoda-san at Mitaka * Fujii-san at Mitaka? * Tanioka-san at Mitaka? * Others at Kamioka * -- * F0 blade prototype test ==== Plan for week of 4/30 ==== * Golden Week! |
|
| Line 97: | Line 22: |
| * [[KAGRA/Subgroups/VIS/TypeB/March2018]] * [[KAGRA/Subgroups/VIS/TypeB/April2018]] |
|
| Line 101: | Line 24: |
| * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7779|JGW-L1807779-v1 Type B Schedule (SR)]] | * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7779|JGW-L1807779 Type B Schedule (SR)]] |
| Line 103: | Line 26: |
| ==== Vacation Info ==== * Mark at LVC, then vacation, 3/18 (Sun) - 4/1 (Sun) * Fabian vacation, 3/26-4/27 (then gone). |
==== Plan for week of 11/4 ==== * Mark, Enzo, Hirata-san and Fabian at Kamioka Mon-Fri. ===== SRM ===== * Main sequence * Add magnets to SF damper. * Install #353 poles * Move NB-03 jacks down. * Crane PI into AF. * Install F0-SF rod (#331) and flying saucer. * Route SF/... cables up to underside of F0. * Do vertical height budget. * Adjust SF trim mass for balance and keystone height. * Cable/test IP LVDTs. * Cable/test IP FRs. * LBB * Move KOACH filters * Put LBB damper rings in tank. * Set tank jacks to nominal height. ==== Plan for week of 11/11 ==== * Mark, Enzo, Hirata-san and Fabian at Kamioka Mon-Fri. ===== SRM ===== * Unlock IP and center roughly. * Calibrate IP LVDTs. * Check/adjust alignment of SS. * Add arc weights and geophones (or extra mass equivalent to geophones). * Cable/test geophones. * Improve centering/tuning of IP and SS alignment. ==== Plan for week of 11/18 ==== * Friday 11/23 is Labor Thanksgiving Day. * Mark, Enzo, Hirata-san and Fabian at Kamioka Mon-Thu. ===== SRM ===== * Unlock IP and center roughly. * Calibrate IP LVDTs. * Check/adjust alignment of SS. * Add arc weights and geophones (or extra mass equivalent to geophones). * Cable/test geophones. * Improve centering/tuning of IP and SS alignment. * Crane into tank. |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
Type B (Mark)
Report for week of 10/29
- SRM
- Enzo realized that he could cover the next round of needed cables with more cable soldering and did another batch. Because Yamamoto-san's lab was running low on isopropanol, Hirata-san washed them with ethanol at Mozumi.
- Enzo worked out the optimum output resistance for the LPCDs to substitute for HPCDs with the horizontal IM OSEMs. The value was quite close to that already chosen for modified LPCDs by the cryogenic group, so we're going to standardize. The modified LPCDs will have to be operated with the internal watchdog disabled for now.
- Fabian finished adding the TM OSEM cables and tested them.
- We reconfigured the top of the assembly frame in preparation for the PI (removing crossbars and moving jacks down).
- Hirata-san put the magnets on the SF damper and we hooked it to the PI, attached the #353 poles and craned the PI into the assembly frame.
We installed the F0-SF rod and flying saucer and suspended the SF/... section. We had plenty of spare load capacity, so we changed the CuBe spring to a weaker one and put 2.3 kg of ballast on the SF cap.
- We reduced the trim mass on the BF to compensate for the mass of the TM OSEM cables.
- Measured all the bounce frequencies.
- Hirata-san put magnets on the LBB damper magnet ring, put the pieces into the tank and assembled them into a sandwich ready for craning.
- SR2
- Hirata-san unclamped the LBB damper rings and suspended the LBB. It still needs ballast mass and is currently sitting high, with the blades at their upper stops.
To-Do Lists, Schedule
Plan for week of 11/4
- Mark, Enzo, Hirata-san and Fabian at Kamioka Mon-Fri.
SRM
- Main sequence
- Add magnets to SF damper.
- Install #353 poles
- Move NB-03 jacks down.
- Crane PI into AF.
- Install F0-SF rod (#331) and flying saucer.
- Route SF/... cables up to underside of F0.
- Do vertical height budget.
- Adjust SF trim mass for balance and keystone height.
- Cable/test IP LVDTs.
- Cable/test IP FRs.
- LBB
- Move KOACH filters
- Put LBB damper rings in tank.
- Set tank jacks to nominal height.
Plan for week of 11/11
- Mark, Enzo, Hirata-san and Fabian at Kamioka Mon-Fri.
SRM
- Unlock IP and center roughly.
- Calibrate IP LVDTs.
- Check/adjust alignment of SS.
- Add arc weights and geophones (or extra mass equivalent to geophones).
- Cable/test geophones.
- Improve centering/tuning of IP and SS alignment.
Plan for week of 11/18
- Friday 11/23 is Labor Thanksgiving Day.
- Mark, Enzo, Hirata-san and Fabian at Kamioka Mon-Thu.
SRM
- Unlock IP and center roughly.
- Calibrate IP LVDTs.
- Check/adjust alignment of SS.
- Add arc weights and geophones (or extra mass equivalent to geophones).
- Cable/test geophones.
- Improve centering/tuning of IP and SS alignment.
- Crane into tank.