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| Deletions are marked like this. | Additions are marked like this. |
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| * Type B Past Week Summary * Mark and Fabian went to Kashiwa to clean up glue residue on the dummy BS and do a fit/function test of Tatsumi-san's modified tooling. * Most of the remaining glue came off with soaking in acetone, but there is still some in the machining grooves in the Al surface. Probably more work is required. * A set of cleanroom shoes borrowed from the ATC disintegrated when worn (the plastic had perished from age), which put small pieces of foam all over the floor in Hirose-san's cleanroom and required a lot of clean-up with a sticky roller! Cleanroom suits and shoes for use by Type B team at Mitaka/Kashiwa have been ordered, but will take another week to arrive. * The flag holding parts are now much easier to place and remove, much reducing the risk of breaking flags after gluing. * The sapphire and metal prisms from both the first BS gluing and the PR3 hanging test mirror were brought back to Mitaka for ultrasonic cleaning to remove glue, so they can be reused. * We arranged with Hirose-san to collect the dummy BS and mirror box next Thursday 8/4. (This is conditional on the new clean suits arriving.) Further work will be done at Mitaka. * Hirata-san arranged to borrow the NAOJ Hi-Ace van for the trip. * Hirata-san found the SR versions of the screws for immobilizing the IM and IRM. These fit much better than the BS ones (despite being the same design) and will be used for the BS. * Fabian worked on design of the extra 600 g of trim mass that will be needed for the IM. * Fabian updated the geophone noise plot with a more accurate calibration. |
* Type B Past Week Summary - week of 8/8 * Mark, Fabian and Hirata-san cleaned glue off the dummy BS, attached Akutsu-san's new SS mirror plates, reglued the flags and prisms, and removed the gluing hardware, so the dummy BS is ready for shipping. Tatsumi-san's refinements to the tooling (especially the new flag holders) worked very smoothly. We were more generous with the glue and much more careful with the alignment of the prisms to the barrel, both during rehearsal and the final gluing. * Mark wrote up the gluing procedure as a new document [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5505| E1605505]]. (The original plan was to do an addendum to Tatsumi-san's PR gluing procedure JGW-E1504248, but there was too much material.) * Hirata-san organized with Takahashi-san to get the BS payload masses shipped to Kamioka. They will go in an air-ride truck on Wed 8/17 together with a load of Type A stuff, and will arrive early on Thu 8/17. * Hirata-san shipped the collection of Type B fasteners to Kamioka, to arrive Mon 8/15. * Hirata-san measured another standard filter and cleaned various parts for people. * Hirata-san worked on the SR2 Inventor assembly. He spotted a problem with the orientation: given the position of the pistons in the SR2 tank (according to the assembly from Mirapro), mating the standard Type B SR chain and the chamber in the natural way puts the optic at 90° to what it needs to be. A similar problem was found in the Type B Test at Mitaka, and it was eventually worked around, but with some difficulty. Hirata-san will investigate the best way of making a correction. * Komori-kun, Kuwahara-kun and Akutsu-san calibrated an initial batch of 7 wide-mouthed OSEMs. * Fabian worked on the payload assembly procedure. * Type B Past Week Summary - week of 8/15 * Hirata-san shipped the fasteners to Kamioka, and they arrived Tuesday. * Hirata-san shipped a large load of Type A and Type B items, which Mark and Fabian received on Thursday 8/18. * Akutsu-san shipped the first 7 OSEMs. * Hirata-san and Ikenoue-san did a successful function test of the BS winches with the new clamp parts for the thicker wires. * Mark, Fabian and Zhao-kun did a major cleanup and reorganization of the BS clean booth at Kamioka, putting PR2 stuff in boxes, vacuuming and wiping, and making space. * Mark, Fabian and Zhao-kun set the crossbeams of the assembly frame to their correct positions and installed the EQ stop ring on top, ready to receive the IM. This is the first actual installation activity for Type B. * |
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| * OSEMs * Akutsu-san is working to get wide-mouth OSEMs ([[http://klog.icrr.u-tokyo.ac.jp/osl/?r=1853|2 assembled]]; first 4 expected to be assembled and washed by 8/8) * Longer cables for BF->PI and SF->PI. * Connectors RECEIVED, cables being made. * SR machining test ongoing. |
* Longer cables for BF->PI and SF->PI still not received, Takahashi-san to check status. |
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| * Breadboard springs (in manufacture, expected end of July) | |
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| * 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) |
* Longer term to-do list * Decide position of BS rack (in consultation with Miyakawa-san) - document in progress: [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5413| T1605413]] * Do Inventor assembly for SR2 in chamber and on assembly frame (Hirata) - ONGOING. * Write more of payload assembly procedure (Fabian) - ONGOING * Write more of main assembly procedure (Mark) - ONGOING |
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| * 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 |
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| * Redesign SRx IM wire clamps for larger prisms, remachined RMs. | * Redesign SRx IM wire clamps for larger prisms, remachined RMs |
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| * Check SR RM machining test progress (Hirata) |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
- Type B Past Week Summary - week of 8/8
- Mark, Fabian and Hirata-san cleaned glue off the dummy BS, attached Akutsu-san's new SS mirror plates, reglued the flags and prisms, and removed the gluing hardware, so the dummy BS is ready for shipping. Tatsumi-san's refinements to the tooling (especially the new flag holders) worked very smoothly. We were more generous with the glue and much more careful with the alignment of the prisms to the barrel, both during rehearsal and the final gluing.
Mark wrote up the gluing procedure as a new document E1605505. (The original plan was to do an addendum to Tatsumi-san's PR gluing procedure JGW-E1504248, but there was too much material.)
- Hirata-san organized with Takahashi-san to get the BS payload masses shipped to Kamioka. They will go in an air-ride truck on Wed 8/17 together with a load of Type A stuff, and will arrive early on Thu 8/17.
- Hirata-san shipped the collection of Type B fasteners to Kamioka, to arrive Mon 8/15.
- Hirata-san measured another standard filter and cleaned various parts for people.
- Hirata-san worked on the SR2 Inventor assembly. He spotted a problem with the orientation: given the position of the pistons in the SR2 tank (according to the assembly from Mirapro), mating the standard Type B SR chain and the chamber in the natural way puts the optic at 90° to what it needs to be. A similar problem was found in the Type B Test at Mitaka, and it was eventually worked around, but with some difficulty. Hirata-san will investigate the best way of making a correction.
- Komori-kun, Kuwahara-kun and Akutsu-san calibrated an initial batch of 7 wide-mouthed OSEMs.
- Fabian worked on the payload assembly procedure.
- Type B Past Week Summary - week of 8/15
- Hirata-san shipped the fasteners to Kamioka, and they arrived Tuesday.
- Hirata-san shipped a large load of Type A and Type B items, which Mark and Fabian received on Thursday 8/18.
- Akutsu-san shipped the first 7 OSEMs.
- Hirata-san and Ikenoue-san did a successful function test of the BS winches with the new clamp parts for the thicker wires.
- Mark, Fabian and Zhao-kun did a major cleanup and reorganization of the BS clean booth at Kamioka, putting PR2 stuff in boxes, vacuuming and wiping, and making space.
- Mark, Fabian and Zhao-kun set the crossbeams of the assembly frame to their correct positions and installed the EQ stop ring on top, ready to receive the IM. This is the first actual installation activity for Type B.
- Type B ongoing issues
Longer cables for BF->PI and SF->PI still not received, Takahashi-san to check status.
- Lower breadboard stuff
- Installation to be incorporated into the procedure document. Mark/Takahashi to discuss.
- Documents
BS Assembly Procedure E1504235, E1504235 draft
- Longer term to-do list
Decide position of BS rack (in consultation with Miyakawa-san) - document in progress: T1605413
- Do Inventor assembly for SR2 in chamber and on assembly frame (Hirata) - ONGOING.
- Write more of payload assembly procedure (Fabian) - ONGOING
- Write more of main assembly procedure (Mark) - ONGOING
- Work on BS simulation (Fabian)
- 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)