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| Deletions are marked like this. | Additions are marked like this. |
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| * Mark and Fabian worked at Kamioka with Fujii-san: * We attempted to measure the tilt sensitivity of the accelerometers by adding shims under the legs but gave up when we discovered that picking up and putting down the accelerometer perturbs the zero point even without shims. We will probably need a special tilt stage to do this properly. * We took some frequency and Q measurements. The results were amplitude dependent. Joris thinks that this is due to not operating the accelerometers close enough to zero DC output. * We set up for a test of the geophone noise. One geophone is reading half the output of the others - one of the adapter cables is broken. |
* Fabian, Mark, Yokogawa-kun and Kuwahara-kun did BS installation at Kamioka: * Calculated BS pitch correction ([[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5630|JGW-T1605630]]) * Hung dummy optic and set pitch. * Prepared RM for hanging (adding OSEMs etc). One OSEM (#24) had wobbly leads and was brought back to Mitaka for rework. * Placed vacuum feedthroughs on assembly frame and cleaned initial batch (4) of D-Sub cables. * Decided position of BS rack with Miyakawa-san. * Measured various maraging rods and the rod holders on the SF. * Placed safety rails, rearranged floor panels, cleaned new floor panels, and otherwise improved safety. |
| Line 11: | Line 15: |
| * Received extra compensation masses and washed them. * Received PI guides, assembled them and shipped them to Kamioka. * Received backup set of pillar for security structure (with M10 instead of M12 holes at top). * Removed adhesive from base of BS flags in preparation for regluing. * Did assembly drawings for cable clamps and other add-on parts for BF and SF. |
* Made new 3D models of the maraging rods for PRx and SRx * Made new collet design for PRx and SRx (3D and 2D). * Made new IM flag design for PRx and SRx (3D and 2D). * Washed lots of Type A BF parts and OSEM parts. * Cleaned the BS BF-IM maraging rod and organized the rest of the stock of rods. * Measured some BF part dimensions. * Pre-assembled parts for BFs. |
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| * Wires * Need to decide RM wire thickness and order BS and RM wires. Lead time is a few days from Nilaco. * OSEMs * Akutsu-san is working to get wide-mouth OSEMs * Longer cables for BF->PI and SF->PI. * Connectors RECEIVED, cables being made. * Feedthrough Adapters * Connectors RECEIVED. * SR machining test ONGOING. * Installation stuff * "Ceiling" work in BS clean booth (removal of second floor section) scheduled for Fri 7/1. * Assembly frame construction scheduled for 7/4 * Ballast masses for payload * Initial batch received - ordered extra smaller ones to allow for adjustments. * Lower breadboard stuff * Installation to be incorporated into the procedure document. Mark/Takahashi to discuss. * Breadboard springs (in manufacture, expected end of July) * Nail-head parts - ordered with assembly frame, will arrive next week. * 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]] |
* Longer term to-do list * Do Inventor assembly for SR2 in chamber and on assembly frame (Hirata) - NEARLY DONE. * Part "disk security" top has to be modified - screw positions do not match. * Write more of payload assembly procedure (Fabian) - ONGOING * Write more of 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]] (Mark) - ONGOING * Lower breadboard installation to be incorporated into the procedure document. * 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) |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
- Type B Past Week Summary
- Fabian, Mark, Yokogawa-kun and Kuwahara-kun did BS installation at Kamioka:
Calculated BS pitch correction (JGW-T1605630)
- Hung dummy optic and set pitch.
- Prepared RM for hanging (adding OSEMs etc). One OSEM (#24) had wobbly leads and was brought back to Mitaka for rework.
- Placed vacuum feedthroughs on assembly frame and cleaned initial batch (4) of D-Sub cables.
- Decided position of BS rack with Miyakawa-san.
- Measured various maraging rods and the rod holders on the SF.
- Placed safety rails, rearranged floor panels, cleaned new floor panels, and otherwise improved safety.
- Hirata-san:
- Made new 3D models of the maraging rods for PRx and SRx
- Made new collet design for PRx and SRx (3D and 2D).
- Made new IM flag design for PRx and SRx (3D and 2D).
- Washed lots of Type A BF parts and OSEM parts.
- Cleaned the BS BF-IM maraging rod and organized the rest of the stock of rods.
- Measured some BF part dimensions.
- Pre-assembled parts for BFs.
- Fabian, Mark, Yokogawa-kun and Kuwahara-kun did BS installation at Kamioka:
- Type B ongoing issues
- Longer term to-do list
- Do Inventor assembly for SR2 in chamber and on assembly frame (Hirata) - NEARLY DONE.
- Part "disk security" top has to be modified - screw positions do not match.
- Write more of payload assembly procedure (Fabian) - ONGOING
Write more of BS Assembly Procedure E1504235, E1504235 draft (Mark) - ONGOING
- Lower breadboard installation to be incorporated into the procedure document.
- 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)
- Do Inventor assembly for SR2 in chamber and on assembly frame (Hirata) - NEARLY DONE.