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| * Hirata-san: * Received many parts from i-ject for BFRM (took pictures and took them into ATC cleanroom). * got quotes for PRM/SRM payload from i-ject. * Checked quotes and asked for some modifications.) * Washed parts (parts for type-A, small hexagons, screws, etc\) * Wiped 9 piano wires and sent to Kamioka for PR. * pdated Fabian's EQstop parts for BS recoilmass and updated EQstop assy drawings. * Fabian * Worked out geometry for blade adjustment. * Designed additional ballast masses for BS BF (and SR). * Mark and Enzo (at Kamioka) * Did two rounds of adjustment of the blades with help from Takahashi-san (one for position, one for frequency) * Surveyed the position of the rod using the vertical mode of the bubble level. * Got apparent improvement as judged at the IRM-IM EQ stops (but still not perfect). * Did one more round of blade adjustments (without Takahashi-san) * Got good agreement with IRM-IM EQ stops, so put BF cap on and raised the whole system to check for balance. * Found balance still fairly bad: about the same on the -X,+Y diagonal and about half on the +X,+Y diagonal (70 and 30 mm worth of motion of a single trim mass respectively; previous a bit over 70 mm each). * From the imbalance torques, calculated the offset of rod as 2.3 mm in the direction 22 degrees to the +X side of -Y. * Calculated the blade adjustments required: {-0.325194, -1.79175, 2.11695} mm * Prepared to apply adjustments (removed cap etc). |
=== Type B (Mark) === ==== Past week report ==== At Kamioka (Mark, Fabian, Hirata-san, Yoshioka-kun): * We reconfigured the top of the assembly frame. * We cleaned the assembly frame, blowing dust out of the grooves and wiping all surfaces. * We recentered the optic table in the bottom of the frame and adjusted the frame until the top was centered over the optic table. We also recentered the trolleys. * We re-installed, centered and leveled the IM. * We solved two issues with the new wire clamps: * Some holes were not properly threaded - Hirata-san retapped them. * Some locating pins were loose - we glued them. * We mounted the BS mirror box on the trolley and brought it under the IM. * We installed the winch system and the 300 µm wires for the BS. * We set up the optical lever. * Hirata-san finished the new BF. We moved the old BF out of the cleanbooth and the new one in. ==== Plan for week of 8/7 ==== Site closure: Friday<<BR>> Vacation: Enzo (Mon), Fabian (Mon-Fri)<<BR>> Kamioka: Mark (Mon-Thu), Enzo (Tue-Thu), Yoshioka-kun (Tue, Wed), Ohishi (TBD).<<BR>> * Finish hanging BS * Hang RM. * Weigh/trim BS/RM/IM. * Suspend BS/RM/IM, add IRM. * Lay new in-air OSEM cables. Mitaka: Hirata-san (Mon-Fri)<<BR>> * SR stuff. ==== Plan for week of 8/14 ==== Site closure: Mon, Tue<<BR>> Vacation: Fabian (Mon-Fri) Kamioka: Mark (Wed-Fri), Enzo (Wed-Fri), Yoshioka-kun (Wed, Fri), Ohishi (TBD).<<BR>> Mitaka: Hirata-san (Mon-Fri)<<BR>> Vacation Info: Enzo: Sat 7/22 through Sun 8/6 Fabian: Fri 8/4 through Mon 8/21 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, Fabian, Hirata-san, Yoshioka-kun):
- We reconfigured the top of the assembly frame.
- We cleaned the assembly frame, blowing dust out of the grooves and wiping all surfaces.
- We recentered the optic table in the bottom of the frame and adjusted the frame until the top was centered over the optic table. We also recentered the trolleys.
- We re-installed, centered and leveled the IM.
- We solved two issues with the new wire clamps:
- Some holes were not properly threaded - Hirata-san retapped them.
- Some locating pins were loose - we glued them.
- We mounted the BS mirror box on the trolley and brought it under the IM.
- We installed the winch system and the 300 µm wires for the BS.
- We set up the optical lever.
- Hirata-san finished the new BF. We moved the old BF out of the cleanbooth and the new one in.
Plan for week of 8/7
Site closure: Friday
Vacation: Enzo (Mon), Fabian (Mon-Fri)
Kamioka: Mark (Mon-Thu), Enzo (Tue-Thu), Yoshioka-kun (Tue, Wed), Ohishi (TBD).
- Finish hanging BS
- Hang RM.
- Weigh/trim BS/RM/IM.
- Suspend BS/RM/IM, add IRM.
- Lay new in-air OSEM cables.
Mitaka: Hirata-san (Mon-Fri)
- SR stuff.
Plan for week of 8/14
Site closure: Mon, Tue
Vacation: Fabian (Mon-Fri) Kamioka: Mark (Wed-Fri), Enzo (Wed-Fri), Yoshioka-kun (Wed, Fri), Ohishi (TBD).
Mitaka: Hirata-san (Mon-Fri)
Vacation Info: Enzo: Sat 7/22 through Sun 8/6 Fabian: Fri 8/4 through Mon 8/21 Mark: TBD Mid-Oct