Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

Type B (Mark)

Report for week of 1/29

• We moved the top filter intended for SR2 (#1) into the SR3 cleanbooth.

• Unfortunately we noticed one of the blades had many small X-shaped stress fractures on the top surface (klog 4058).

• We moved the top filter entered for SR3 (#3) into the SRM cleanbooth and inspected the blades. Two had one smallish stress fracture each and one had a huge fracture and looks close to failing (klog 4061).

• We referred the BS OL.

• We removed the BS tank lid and inspected the BS top filter blades. They seemed fine (klog 4073).

• Hirata-san received and washed some ferromagnetic disks for IM flags and other small parts.
• Hirata-san moved the BF with the tilted keystone (#1) out of the cleanbooth in preparation for rebuilding.
• Hirata-san placed the second order for payload parts, and an order for remachining of nuts for cable clamps on rods.
• Fabian measured the gain of the ADC system (homework from the Commissioning Workshop).

Plan for week of 2/5

• Enzo on vacation; all others at Kamioka.
• -
• Make in-air pico adapter cables.
• Calibrate LVDT.
• Test IM picos and BF yaw pico.
• Test FR.
• Install ballast mass in BF.
• Build IRM around IM.

Plan for week of 2/13

• No work Monday (建国記念の日の振替休日)
  

• Enzo on vacation
• Hirata-san at Mitaka Tue, Wed (to receive and wash parts).
• All others at Kamioka.
• -
• Cable/test/adjust IM OSEMs.
• Do TFs from IM OSEMs to IM OSEMs, OL pitch/yaw.

Plan for week of 2/19

• Lift BF/... section and check total mass and balance.
• Cable and test BF picos.
• Add section of SS up to SF ring.
• Bring in SF.
• Add Cu segments to SF cap.
• Hook BF/... section.
• Route cables up to under SF.
• Check/adjust total mass of BF/... section.

Vacation Info

• Enzo 1/30-2/19 (at Mitaka 1/29, part of 1/30).
• Fabian 4/2-4/27 vacation (then gone).