|
Size: 5968
Comment:
|
Size: 2348
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 5: | Line 5: |
| * Type B Past Week Summary * Fabian worked on IM and dummy BS assembly: [[https://photos.google.com/share/AF1QipMNVSExyP3TuyhK4s_VD-ARDlNoCPCf13ZDbHUlwOw14AKgj4XUe0vYg27dQ12icQ?key=SjJ0dXJ1bjN2OGVCN3d6RnoySEtFSjVJUmVwSlZR|photos1]], [[https://photos.google.com/share/AF1QipPQdoB5vYN1VcD32TkA4QSGldODvKRwiT5h-m122ahSpWmFyyrO5MX-9ajL1LeRIg?key=VFFuUVktcEtlMURQUldhZUlRcGFhbzNDeU5IN3NB|photos2]] * A hole in a picomotor holder was too small. ATC staff solved this isue quickly and Hirata-san cleaned the piece. * Some ballast discs for the dummy optic were dirty (seen by visual inspection). Hirata-san cleaned them. * Some arrows were cleaned from the mirrors for the dummy optic. * Hirata-san worked on checking Mirapro's assembly frame design - some minor issues with rail system found. * Hirata-san measured another filter. * Hirata-san washed a large batch of parts. * All parts for gluing of dummy BS are in hand. We arranged with Tatsumi-san to glue magnets at Mitaka on 6/6, glue flags at Kashiwa on 6/8, and inspect bonds and bring dummy BS back to Mitaka 6/13. * Mark worked on solutions to allow a [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/VIS/TypeB/dummyBS|larger mirror on dummy BS]]. After discussions with Simon and Akutsu-san we decided to go with a stainless steel plate solution. The gluing can go ahead and we can attach the plates later. * Mark worked on list of items for purchase in FY2016. * Mark worked on finding connectors for vacuum-compatible geophone adapters. * Mark worked more on [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4235|E1504235 BS Assembly Procedure]] ([[https://onedrive.live.com/redir?resid=D5CCFA70A378E0D0!195&authkey=!AM_usynuo9QI57g&ithint=folder,webloc|Draft on OneDrive]]) * '''Discussions ''' * Crane will not be available on 13-14 of June. * Review: '''fix the date (Mark) ''' * Measurement of iKAGRA BS position will be done in the second week of June. Then it will be taken out of the chamber after that (Ohishi) * IM, RM, IRM, dummy BS assembly * Fabian assembled the dummy BS and started on the IM. * Still need to find SDC-treated hook for maraging wire in IM. Still not found. Spare hook is being SDC-treated. Can be added later. * Will start assembly 5/30 * Wires * Fabian analysis RM wire thickness versus mode frequency: [[https://onedrive.live.com/redir?resid=1447B05D5B571A84!442&authkey=!AKrjBW2W8vMKyAY&ithint=file,pdf|link]], [[https://onedrive.live.com/redir?resid=1447B05D5B571A84!421&authkey=!ALZY-tFtMCYI9Pw&ithint=file,pdf|another link]],[[https://pfalig.bn1301.livefilestore.com/y3mT7oHnuBfD9_7Ata6H90opTVY5IIIm78MQ8Rl-lChfSUtGhGiEP-mlB1rQuzliimi-pmL1JfYTKCUY_Tgan0Bfa2jq5EeSXWiCracw_5ulsm2iuf6RHJcz0ot34DaeWqdUjFnU6fILnyau69WFkBmUcTwfGYBNwSrs27eyK-jc90/RM_wire.pdf?psid=1|yet another link]] (From last week: [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5106|T1605106]] /[[https://onedrive.live.com/view.aspx?resid=1447B05D5B571A84!354&ithint=file,docx&app=Word&authkey=!AO5CHNP3xlO5RjY|draft]]) * Can we make SR wire breakers bigger? * Fukushima-san has not yet started the work. He will start soon (as of 5/27). * Flags, Metal Prisms, Sapphire prisms RECEIVED * Mirror box and Flag/Prism gluing * All parts in hand. * Magnet gluing and check of parts at Mitaka, Monday 6/6. * Gluing at Kashiwa, Wednesday 6/8. * Inspection of bonds and return to Mitaka, 6/13. * An extra structure attached to the EQ stop to prevent tipping over of the BS - no action since last week. * Not enough crane height problem (Hirata, Saito) - no action since last week * Ballast masses for payload * Initial batch received - ordered extra smaller ones to allow for adjustments. * Lower breadboard stuff * Assembly procedure * '''Need to be incorporated into the procedure document. Discuss with Takahashi (Mark)''' * Breadboard springs (in manufacture, expected end of July) * Nail-head parts: quote from Mirapro received, not urgent, will be combined with assembly frame order. * BS Assembly Frame Design (Mark, Hirata) * Hirata-san found issues with rail system part - organizing fix. * Clean bag * Ordered - expected 6/8. * 2D and 3D CAD * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5035|E1605035 VIS Document and Drawing Tree (BS)]] * Electronics * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3600|JGW-D1503600 - BS Suspension Cabling]] * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5111|E1605111 BS Suspension Electronic Items List]] * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3901|D1503901 In-Vacuum Cable Detail]] * Item list and timetable was given to Miyakawa-san - some corrections received and added to schematic but not yet posted. * Status on AEL boxes OK according to Miyakawa-san. * Signal generator and cable to be used for BS test. May order NIKHEF cards later if concern about AC-driven units in racks. * Need to get new longer versions of some previously ordered BF-PI and SF-PI cables (Takahashi). * Need to check previously ordered TM-BF and IM-BF OSEM cables have been flipped (Takahashi). * Decided to hand-make cables for geophones because previously ordered cables have no conductor on pin 5. * Stepper drive box (requested by Sekiguchi-san [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3385|T1503385]]) is being designed, should be ready in time. * Mark looking for connectors for geophone adapters. * Procedure documents * Mark worked on BS Assembly Procedure [[https://onedrive.live.com/redir?resid=D5CCFA70A378E0D0!195&authkey=!AM_usynuo9QI57g&ithint=folder,webloc|E1504235 draft]] |
=== Type B (Mark) === ==== Past week report ==== At Kamioka (Mark, Fabian, Enzo, Perry, Hirata-san): * We craned in the PI. * We assembled the thrust bearing holder that receives the PI-SF rod. (The recess for the bearing was very slightly too small and had a burr near a retaining screw hole that prevented the bearing from seating properly, and so it required filing and re-cleaning.) * We hooked the SF and lowered the jacks under the SF to suspend the SF/... section. * The top filter rose when unlocked, and required about 1.8 kg to send it back down. Therefore we may be OK - the top filter seems to have about 8 kg more capacity than as measured by G&M. The hex cable clamp (≈0.25 kg) and the cables between the PI and SF still have to be added, but we can get an extra 3 kg by removing one of the three Cu damper segments (and rearranging the other two). * Hirata-san built and installed three LBB blade units. * Enzo kept debugging the SF LVDT. We repaired several broken wires, but it's still not behaving correctly. We suspect the ordering of the three coils (input output and excitation) may not be right. If so, we should be able to fix it with an adapter cable without removing the SF cap. ==== Plan for coming weeks ==== For more detail, see [[KAGRA/Subgroups/VIS/TypeB/ToDo]]. Week of 5/1: * No activity (Golden Week). Week of 5/8: * Commence work Tuesday 5/9. * Remove PI temporarily. * Continue debugging SF LVDT (removing cap if necessary). * Investigate possible mis-alignment between the tips of the LBB blades and the holes for the rods going down to the damper ring. * Add magnets to upper SF damper ring. * Reinstall PI, this time with rods and damper ring. * Reinstall PI-SF rod, this time with hex cable clamp. * Install PI yaw stepper. * Wire up PI yaw stepper and vertical fishing-rod steppers. * Route cables from SF to PI (may involve removing part of Cu damper). Week of 5/15: * Enzo from Tuesday 5/16 (driving test), rest of team from Monday. * Prepare for PR2 bellows removal on 5/15 (move table with tools). * Wire up PI horizontal LVDTs and steppers. * Install geophones. * Unlock IP, re-level PI to center PI, add arc weights as required. |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
Type B (Mark)
Past week report
At Kamioka (Mark, Fabian, Enzo, Perry, Hirata-san):
- We craned in the PI.
- We assembled the thrust bearing holder that receives the PI-SF rod. (The recess for the bearing was very slightly too small and had a burr near a retaining screw hole that prevented the bearing from seating properly, and so it required filing and re-cleaning.)
- We hooked the SF and lowered the jacks under the SF to suspend the SF/... section.
The top filter rose when unlocked, and required about 1.8 kg to send it back down. Therefore we may be OK - the top filter seems to have about 8 kg more capacity than as measured by G&M. The hex cable clamp (≈0.25 kg) and the cables between the PI and SF still have to be added, but we can get an extra 3 kg by removing one of the three Cu damper segments (and rearranging the other two).
- Hirata-san built and installed three LBB blade units.
- Enzo kept debugging the SF LVDT. We repaired several broken wires, but it's still not behaving correctly. We suspect the ordering of the three coils (input output and excitation) may not be right. If so, we should be able to fix it with an adapter cable without removing the SF cap.
Plan for coming weeks
For more detail, see KAGRA/Subgroups/VIS/TypeB/ToDo.
Week of 5/1:
- No activity (Golden Week).
Week of 5/8:
- Commence work Tuesday 5/9.
- Remove PI temporarily.
- Continue debugging SF LVDT (removing cap if necessary).
- Investigate possible mis-alignment between the tips of the LBB blades and the holes for the rods going down to the damper ring.
- Add magnets to upper SF damper ring.
- Reinstall PI, this time with rods and damper ring.
- Reinstall PI-SF rod, this time with hex cable clamp.
- Install PI yaw stepper.
- Wire up PI yaw stepper and vertical fishing-rod steppers.
- Route cables from SF to PI (may involve removing part of Cu damper).
Week of 5/15:
- Enzo from Tuesday 5/16 (driving test), rest of team from Monday.
- Prepare for PR2 bellows removal on 5/15 (move table with tools).
- Wire up PI horizontal LVDTs and steppers.
- Install geophones.
- Unlock IP, re-level PI to center PI, add arc weights as required.