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| * Type B Past Week Summary * Fabian took photos of the cleanroom in the ATC to help decide whether it is a good place to assemble PIs for Type A/B. * Hirata-san wiped one set each of wires for the BS and RM (addition sets pending). * Hirata-san washed remachined locking parts for the IM and screws for jacks. * Hirata-san liaised with Ikenoue-san of ATC to get winch parts designed for the new wire thicknesses. * Hirata-san worked on the Inventor 3D assembly of the SR2. * The scale for checking the masses of the IM parts was received. * Fabian and Hirata-san identified an issue with the lock screws between the IM and IRM. The screws were too tight in the holes and adjusting the size with a die caused large flakes of the black coating to come off. (These screws were ordered before the current screw policy was instituted.) Hirata-san will order better screws from Misumi and have additional machining done on them. * Fabian tracked down the calibration factors for the geophones and generated a calibrated plot. * Type B ongoing issues * OSEMs * Akutsu-san is working to get wide-mouth OSEMs * Longer cables for BF->PI and SF->PI. * Connectors RECEIVED, cables being made. * SR machining test ongoing. * Lower breadboard stuff * Installation to be incorporated into the procedure document. Mark/Takahashi to discuss. * Breadboard springs (in manufacture, expected end of July) * 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]] * To-do list during Mark's vacation * Weigh IM/RM/IRM (Fabian, Hirata) - DONE but anomalies found. * Pack/ship IM/RM/IRM to Kamioka (Hirata/Fabian). * Analyze geophone data (Fabian/Shoda) - data taken by Shoda-san; Fabian to find calibration factors. * Remove glue from dummy BS face (Fabian) - partly done. * Reglue flags and prisms (Tatsumi, Fabian) * Clean wire for BS and RM (Hirata) - DONE * Get new winch parts for new wire diameters - design received from Ikenoue-san * Do fit/function test of winches (Fabian/Hirata) * Ship winches to Kamioka (Hirata/Fabian) * Work on BS simulation (Fabian) * Do Inventor assembly for SR2 in chamber and on assembly frame (Hirata) - ONGOING. * Write more of payload assembly procedure (Fabian) * Write more of main assembly procedure (Mark) * Longer term to-do list * Do BS Simulink model (Mark, Kokeyama) * Do 2D drawings of SR2 parts (Hirata) * Redesign SRx IM wire clamps for larger prisms, remachined RMs. * Order SRM/PRM parts (Hirata/Shoda) * Order SRx fasteners (Hirata) * Check SR RM machining test progress (Hirata) |
=== 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 because it was hard-wired to 2 mA. * Fabian finished adding the TM OSEM cables out to the rack and tested them. * We ran DC power and network to the second SRM stepper driver. We still need to get one more DC power cable to replace one we borrowed from SR3. We added the remaining steppers to the Python driver and MEDM screen. * 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, craned the PI into the assembly frame and joined it to the security structure. * 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. This leaves 1.2 kg reserve for cables and an F0 yaw stepper mechanism. * We reduced the trim mass on the BF to compensate for the mass of the TM OSEM cables. * We 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 ==== * [[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)]] ==== 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 because it was hard-wired to 2 mA.
- Fabian finished adding the TM OSEM cables out to the rack and tested them.
- We ran DC power and network to the second SRM stepper driver. We still need to get one more DC power cable to replace one we borrowed from SR3. We added the remaining steppers to the Python driver and MEDM screen.
- 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, craned the PI into the assembly frame and joined it to the security structure.
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. This leaves 1.2 kg reserve for cables and an F0 yaw stepper mechanism.
- We reduced the trim mass on the BF to compensate for the mass of the TM OSEM cables.
- We 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.