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| * Electronics * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3600| D1503600-v9 BS Suspension Cabling]] * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5111| E1605111-v1 BS Suspension Electronic Items List]] * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3901| D1503901-v2 In-Vacuum Cable Detail]] * Need to hand-make geophone cables * Need to make longer versions of BF-PI and SF-PI cables (3.7 m and 2.5 m) * Need to check OSEM cables have same flip for flexicircuit as for PRx. * Asked Miyakawa-san for status on AEL items, especially stepper driver. * Compensation masses for RM/IRM ordered, expected 4/29 * Hirata-san drew up flags |
=== Type B (Mark) === ==== Past week report ==== At Kamioka (Mark, Fabian, Enzo, Hirata-san): * We improvised a solution for ballast mass on the BF, using some heavy dog clamps meant for pedestals, washed and wrapped in foil. We we use them for the duration of the BS Test Hang and then swap them out for custom masses. * We rearranged the BS rack, closing the gaps between boxes (per request of Miyakawa-san. We also renumbered some boxes, connectors and cables so as to use zero-based numbering (#0, #1, #2,...) throughout. * We routed the OSEM cables into the external cable rack (rather than through the PR2 area). * We connected up the BF LVDT, and BF fishing rod stepper motor. * We installed a signal generator for the LVDT. * We connected the super motor driver box to the Internet and attempted to set it up, but with no success so far. * We found the final picomotor driver (we have been using the one from TAMA in the clean booth). * We found many items that we will need soon, including the copper ring for the SF. * We found issues with the digital system (the computer driving the rack had been changed from k1pr2 to k1bs, which causes problems) and worked with DGS to fix them. It now mostly works but the real-time model crashes from time to time. |
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| ==== Plan for coming weeks ==== * Everyone (Mark, Fabian, Enzo, Hirata-san) next week at Kamioka |
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, Hirata-san):
- We improvised a solution for ballast mass on the BF, using some heavy dog clamps meant for pedestals, washed and wrapped in foil. We we use them for the duration of the BS Test Hang and then swap them out for custom masses.
- We rearranged the BS rack, closing the gaps between boxes (per request of Miyakawa-san. We also renumbered some boxes, connectors and cables so as to use zero-based numbering (#0, #1, #2,...) throughout.
- We routed the OSEM cables into the external cable rack (rather than through the PR2 area).
- We connected up the BF LVDT, and BF fishing rod stepper motor.
- We installed a signal generator for the LVDT.
- We connected the super motor driver box to the Internet and attempted to set it up, but with no success so far.
- We found the final picomotor driver (we have been using the one from TAMA in the clean booth).
- We found many items that we will need soon, including the copper ring for the SF.
- We found issues with the digital system (the computer driving the rack had been changed from k1pr2 to k1bs, which causes problems) and worked with DGS to fix them. It now mostly works but the real-time model crashes from time to time.
Plan for coming weeks
- Everyone (Mark, Fabian, Enzo, Hirata-san) next week at Kamioka