Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

Type B (Mark)

Report for week of 9/17

• Monday 9/17 was holiday.
• We optimized the trim mass on the SF to get more balance torque with less total mass. We now have a reserve of 480 g for the yaw pico.
• We set the SF damper gap to 6 mm.
• We set the SR2 pitch with the optic lever, aligned the IRM, and set all the OSEMs to have good clearance and midrange output.
• We locked the SR2 suspension, craned it into the tank and hooked the LBB damper rings (but not the LBB yet).
• With help from Ohishi-san, we removed the First Contact from SR2.
• Mark did an audit of all the electronics boxes and updated the item list and S-number file cards on JGWDoc.
• Mark added some thin arc weights to the inventory and finalized the number of various types to order (8*38 mm + 9*10 mm).
• Panwei copied control filters over from the SR3.

Plan for week of 9/24

• Monday 9/24 is holiday (Autumn Equinox).
• Mark, Hirata-san, Fabian, Panwei at Kamioka Tue-Fri.

SR2

• Move SR2 in-air cables.
• Unlock and realign suspension.

SRM

• Set pitch of SRM and RM, tighten clamps, remove winch system.
• Weigh IM/... section.
• Build up SS to BF level.
• Add BF.
• Suspend IM and tweak height/balance.

Plan for week of 10/1

• Mark, Hirata-san, Fabian, Panwei at Kamioka Mon-Fri.

SRM

• Cable/test BF.
• Install IRM.
• Install/cable/test IM OSEMs.

Plan for week of 10/8

• Monday 10/8 is Sports Day.
• Mark and Terrence (plus TBD) at Kamioka Mon-Fri.
• Hirata-san, Fabian and Panwei at Kamioka Tue-Fri.

SR2/SR3

• Terrence to set up LEN half of SR3 OL and, time permitting, TILT and LEN for SR2.

SRM

• Continue installation.

To-Do Lists, Schedule

• KAGRA/Subgroups/VIS/TypeB/ToDoBS

• KAGRA/Subgroups/VIS/TypeB/ToDoSR

• JGW-L1807779 Type B Schedule (SR)

Vacation/Visitor Info

• Enzo: 9/15 through 10/8 vacation in Chile.
• Terrence: 10/8-12, 10/29-11/2 at Kamioka.