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* Type B Past Week Summary * Mark worked on task lists and schedule. * Mark worked on an update of the BS Electronic Items doc ([[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5111|E1505111]]) and started a SRx Electronics Items doc ([[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5886|E1605886]]). * Mark did a summary spreadsheet of Takahashi-san's cable orders to see what needed to be ordered immediately (new BS TM OSEM cables; geophone adapters) and later (for SRx). * Mark worked on an update of the In-Vacuum Cable doc ([[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3901|E1503901]]), including information on final lengths that Fabian and Hirata-san had decided when making adapter cables. * Mark considered an alternative cabling scheme for the geophones (with a different adapter cable to put the signals and power on different lines and a matching unscrambler) but ended up concluding that the existing design would probably be OK. See [[attachment:00 Revised Geophone-v2.PDF]]. * Fabian worked on a redesign of the EQ stops for the BS (2 of 4 screws under the RM are opposite large holes and there are no screws to restrain the RM front/back at either top or bottom). * Hirata-san worked on PR/SR mirror box modifications with Shoda-san (on-going). * Hirata-san partially assembled a bottom filter for use in fit tests of the PRx BF recoil mass. |
=== Type B (Mark) === ==== Past week report ==== At Kamioka (Mark, Ohishi-san, Fabian, Enzo, Hirata-san, Yoshioka-kun, Kozu-kun): * We solved the problem with the OSEMs: cables had been plugged into the confusingly named "PD current monitor" outputs (actually LED current monitors), not the "OSEM outputs". * We solved a problem with the real-time model freezing which turned out to be the IO chassis having lost power. * We took some mass off the IM to allow for the weight of the cables, and readjusted it in pitch and roll. * We aligned the IRM to the IM and set the OSEMs to mid-range. * We added ballast to the BF. * We changed the receptacles for the SF-BF rod. The low receptacle did not fit properly into the BF keystone and Hirata-san had to file it. * We fixed a broken wire on the BF yaw pico, retested the pico and added the BF cap. * We cabled and tested the BF cap picos. * We lifted the BF and weighed and balanced it. * We installed the SF ring and brought in the SF. * We cabled the SF LVDT and did a quick test (not a full calibration). * We replaced non-vacuum compatible cables in the PI, removed various sticky labels and wiped it with ethanol. * We tried to hook the SF-BF rod but found the hole in the hex cable clamp was too small for the 8 mm rod head. We enlarged the hole but then found the PEEK pieces were too loose. We tried using foil, but then managed to lose a PEEK piece into the BF, so we will need to remove the cap of the BF to get it. |
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==== Plan for week of 8/28 ==== Kamioka: Mark (except Tue), Ohishi-san, Fabian (except Tue), Enzo (except Tue), Hirata-san, Yoshioka-kun (Fri), Kozu-kun (Thu, Fri). * Fix/adjust IRM OSEMs. * Add BF cap; cable and test BF-1 and BF-2 picos. * Lift and weigh BF/IRM/IM/RM/BS; adjust ballast mass. * Crane in SF. * Suspend BF/IRM/IM/RM/BS. ==== Plan for week of 9/4 ==== * Install SF cap; route cables. * Lift and weigh SF/BF/IRM/IM/RM/BS. * Adjust SF ballast. ==== Vacation Info ==== Mark: TBD Mid-Oct |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
Type B (Mark)
Past week report
At Kamioka (Mark, Ohishi-san, Fabian, Enzo, Hirata-san, Yoshioka-kun, Kozu-kun):
- We solved the problem with the OSEMs: cables had been plugged into the confusingly named "PD current monitor" outputs (actually LED current monitors), not the "OSEM outputs".
- We solved a problem with the real-time model freezing which turned out to be the IO chassis having lost power.
- We took some mass off the IM to allow for the weight of the cables, and readjusted it in pitch and roll.
- We aligned the IRM to the IM and set the OSEMs to mid-range.
- We added ballast to the BF.
- We changed the receptacles for the SF-BF rod. The low receptacle did not fit properly into the BF keystone and Hirata-san had to file it.
- We fixed a broken wire on the BF yaw pico, retested the pico and added the BF cap.
- We cabled and tested the BF cap picos.
- We lifted the BF and weighed and balanced it.
- We installed the SF ring and brought in the SF.
- We cabled the SF LVDT and did a quick test (not a full calibration).
- We replaced non-vacuum compatible cables in the PI, removed various sticky labels and wiped it with ethanol.
- We tried to hook the SF-BF rod but found the hole in the hex cable clamp was too small for the 8 mm rod head. We enlarged the hole but then found the PEEK pieces were too loose. We tried using foil, but then managed to lose a PEEK piece into the BF, so we will need to remove the cap of the BF to get it.
Plan for week of 8/28
Kamioka: Mark (except Tue), Ohishi-san, Fabian (except Tue), Enzo (except Tue), Hirata-san, Yoshioka-kun (Fri), Kozu-kun (Thu, Fri).
- Fix/adjust IRM OSEMs.
- Add BF cap; cable and test BF-1 and BF-2 picos.
- Lift and weigh BF/IRM/IM/RM/BS; adjust ballast mass.
- Crane in SF.
- Suspend BF/IRM/IM/RM/BS.
Plan for week of 9/4
- Install SF cap; route cables.
- Lift and weigh SF/BF/IRM/IM/RM/BS.
- Adjust SF ballast.
Vacation Info
Mark: TBD Mid-Oct