Agenda/Minutes of the VIS Meeting on 2018/3/23

2018/3/23 13:30 - 14:10

Participants: Tanioka, Fujii, Aso, Eleonora, Mark, Hirata, Tanaka, Sato, Enzo, Shoda

Progress report

Schedule Chart

Type-A : (PDF/MPP)

Type-B: (PDF/MPP)

Type-A (Takahashi)

Past week report

[X-front]

• Installed the F1 into the clean booth. Opened the cap of F1. The fitting was very tight.
• Embedded the FR. Prepared for the wire with the small hexagons.
• Lifted down the EQ stop. The end plate for F2 was sit on the frame lock.
• Extended the EQ stop to the F1 stage.

[X-end]

• Removed the yoke of vertical actuator in the TF. Pushed down the keystone of TF.
• Connected the cables from the cryo-payload (CP) to the BF.
• Released the BF. Adjusted the position of EQ stop anchor.
• The CP was installed into the cryostat. The maraging wire was hooked to the CP.
• Released the CP. The height of mirror was lower than the design one by 8mm.
• Released the keystone of TF. Set the height of BF to 78mm.

Plan for coming weeks

[X-front]

• Mount the F1 on the EQ stop and hang the F2 from the F1.
• Tune the F1.
• Cable between the F2 and the F1.

[X-end]

• Check the cable connections.
• Adjust the weight of BF and TF.
• Close the chambers.

Type B (Mark)

Report for week of 3/19

• Fujii-kun successfully assembled and tested a geophone pod (klogs 4492, 4508).
• Hirata-san set up the dummy BS to soak off the sapphire prisms (ongoing).
• Shoda-san, Hirata-san and Enzo finished the assembly of 12 OSEMs. We still need to measure the maximum output (ongoing).
• We will send the OSEMs to Kamioka today.
• Enzo made 2 in-air picomotor cable.

Plan for week of 3/26

• Tanioka-kun joins.
• Mark vacation.
• Shoda-san at Mitaka
• Others at Kamioka
• --
• Lay SR3 in-air cabling (Enzo++).
• Finish tuning of BFs (Hirata-san++).
• SF check (Hirata-san++).
  • Check load capacity.
  • Check fit of caps.
  • Add cable clamps to bases.
  • Add cable clamps and Cu segments to caps (only if they fit well).
  • Cable LVDTs and steppers.

Plan for week of 4/2

• Mark at Mitaka Mon, Kamioka from Tue.
• Shoda-san at Mitaka
• Others at Kamioka
• --
• Glue SR3 (if available)
• Build 2xIM, 2xIRM (if parts available - due 3/30)

Plan for week of 4/9

• Shoda-san at Mitaka
• Others at Kamioka
• --
• Finish IMs and IRMs
• Build 1xRM

Plan for week of 4/16

• Start SR3 Hang?

Plan for week of 4/23

• F0 blade prototype test

Plan for week of 4/30

• Golden Week!

To-Do Lists, Schedule

• KAGRA/Subgroups/VIS/TypeB/March2018

• KAGRA/Subgroups/VIS/TypeB/April2018

• KAGRA/Subgroups/VIS/TypeB/ToDoBS

• KAGRA/Subgroups/VIS/TypeB/ToDoSR

• JGW-L1807779-v1 Type B Schedule (SR)

Control Issues

• BS
  • V3 OSEM does not seem to be working properly.
  • Enzo will check the cables and the satellite box if they are working fine.
• SR2
  • BIO is not working properly. WD reset pulses are not working. And some TEST/COIL switch pulse work strangely. More investigation required.
  • Enzo will check the BIO with the LED indicator board.

Vacation Info

• Mark at LVC, then vacation, 3/18 (Sun) - 4/1 (Sun)
• Fabian vacation, 3/26-4/27 (then gone).

Type-Bp (Shoda)

Past week report

Plan for coming weeks

OMMT & OSTM (Ohishi)

Past week report

Plan for coming weeks

Watchdog system (Tanaka)

Past week report

• Preparation for assembly of mass products.-->

  • Programming and Unit Testing(30 Items).-->30/30 Items completed.

• I started to assemble the apparatus.-->Completed.

• Final system test -->Completed.

• I plan to ship to Kamioka on 22nd(For equipments installation from 26th to the week).-->Completed.

• Other necessary preparations.

Plan for coming weeks

• Business trip plan

  • March 25(Toyama),26th-29th(Kamioka),30th(Preliminary day Toyama->Tokyo)

• Installation place-->PRM,PR3,PR2,BS,SR2(However,only to install. Launch is done on another occasion.)

Other site works

Safety

• Incidents: no incidet
• Safety bars around the SR2 assembly frame were set up by Furuta-san.
• Foreseen risks
  • Type-A: Crane work
  • Type-B: Crane work, working with springs
  • Type-Bp:

Discussion

Travel Plans

• Travel (Week of 3/26):
  • Takahashi: 3/26-30
  • Okutomi:
  • Sato: 3/26-30
  • Ishizaki: 3/26-30
  • Mark:
  • Hirata: 26-30
  • Enzo: 26-30
  • Shoda:
  • Ohishi:
  • Fujii: 26-30
  • Tanioka: 27-30
  • Tanaka: 26-29
  • Kozu (ICRR): 26-30
  • Arai (ICRR):
• Travel (Week of 4/2):
  • Takahashi: 4/2-6
  • Okutomi:
  • Sato: 4/2-6
  • Ishizaki: 4/2-6
  • Mark: 4/3-6
  • Hirata: 4/3-6
  • Enzo: 4/2-5
  • Shoda:
  • Ohishi:
  • Fujii: ?
  • Tanioka: 4/2-6
  • Tanaka:
  • Kozu (ICRR): 4/2-6?
  • Arai (ICRR):

Next meeting

On 2018/3/30(Fri)