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.
• 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 1/29

• Enzo at Mitaka 1/29 and most of 1/30, then vacation.
• Kozu-kun away.
• All others at Kamioka.
• Make in-air pico adapter cables.
• Test IM picos and BF yaw pico.
• Test FR.
• Calibrate LVDT.
• Get screws for ballast mass from Takahashi-san.
• Install ballast mass in BF.
• Set up for F0 test.
  • Lower IM crossbars in SR3 assembly frame.
  • Open curtain on SR3 crane slot.
  • Set up dummy load (weight carrier, rods etc).
• Do F0 test.
  • Bring in F0.
  • Hook up dummy load.
  • Adjust dummy load.

Plan for week of 2/5

• Enzo on vacation; all others at Kamioka.
• Build IRM around IM.
• Cable/test/adjust IM OSEMs.
• Time permitting, do TFs from IM OSEMs to themselves and to optical sensor.

Plan for week of 2/12

• Enzo on vacation; all others at Kamioka.

Vacation Info

• Enzo 1/30-2/19 (at Mitaka 1/29, part of 1/30)
• Kozu-kun 1/29-2/2