367
Comment:
|
1667
|
Deletions are marked like this. | Additions are marked like this. |
Line 5: | Line 5: |
* Activity report for week of 12/19 * Mark and Fabian checked Hirata-san's drawings and parts/fastener lists for the SRM/PRM order. * [[KAGRA/Subgroups/VIS/VISMinutes/20161216#BFIssue|BF issue]] * Aso-san and Mark decided to have the BS bottom filter |
=== Type B (Mark) === ==== Past week report ==== At Kamioka (Mark, Fabian, Enzo, Perry, Hirata-san): * Realized that the SF/BF/... section doesn't need 6 kg added, it needs 6 kg ''removed'', but none to remove. The 20 kg extra in the BF to match the SF GAS filter makes the whole chain overload the PI GAS filter. * Lifted the SF/BF/... section to check for net weight and balance. Was 307 kg (cf. G&M's measurement of 301 kf in 2012 for the F0). Can be balanced with only 63 g extra. * Went to build up the LBB blade units but discovered that the holes in the base of the blades are two small (are Ø11 mm; should be Ø12 MM). 3D CAD was correct - error was in the 2D drawing. Shipped the blades away for modification. * Tested the SF LVDT actuation and worked on debugging it. Still not working. * Prepared the PI for being lifted, and the top of the assembly frame for receiving it. * Searched for and found the old PI-SF rod. * Did safety improvements after Enzo hit his head on a flange bolt: reversed all the bolts on the ±X sides of the BS and put caution tape on them. * Debugged Kokeyama-san's changes to the real-time model for the DIO, and started on TFs to check the output filter compensation is working. ==== Plan for coming weeks ==== For more detail, see [[KAGRA/Subgroups/VIS/TypeB/ToDo]]. Week of 4/24 (four-day week): * Crane in PI. * Connect SF/BF... section and see if we're indeed overweight and by exactly how much. * Finish debugging SF LVDT actuation. Week of 5/1: * No activity (Golden Week). |
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):
Realized that the SF/BF/... section doesn't need 6 kg added, it needs 6 kg removed, but none to remove. The 20 kg extra in the BF to match the SF GAS filter makes the whole chain overload the PI GAS filter.
Lifted the SF/BF/... section to check for net weight and balance. Was 307 kg (cf. G&M's measurement of 301 kf in 2012 for the F0). Can be balanced with only 63 g extra.
- Went to build up the LBB blade units but discovered that the holes in the base of the blades are two small (are Ø11 mm; should be Ø12 MM). 3D CAD was correct - error was in the 2D drawing. Shipped the blades away for modification.
- Tested the SF LVDT actuation and worked on debugging it. Still not working.
- Prepared the PI for being lifted, and the top of the assembly frame for receiving it.
- Searched for and found the old PI-SF rod.
- Did safety improvements after Enzo hit his head on a flange bolt: reversed all the bolts on the ±X sides of the BS and put caution tape on them.
- Debugged Kokeyama-san's changes to the real-time model for the DIO, and started on TFs to check the output filter compensation is working.
Plan for coming weeks
For more detail, see KAGRA/Subgroups/VIS/TypeB/ToDo.
Week of 4/24 (four-day week):
- Crane in PI.
- Connect SF/BF... section and see if we're indeed overweight and by exactly how much.
- Finish debugging SF LVDT actuation.
Week of 5/1:
- No activity (Golden Week).