• KAGRA
• Subgroups
• VIS
• VISMinutes20220610

Agenda/Minutes

Zoom Meeting

CRY+VIS Interface Meeting

Date: 2022/6/10 13:00-13:25

Participants: Takahashi, Yokozawa, Uchiyama, Ushiba, Ikeda, Aso, Sato, Miyoki, Akutsu, Kimura, Hirata

Post O3 Upgrade portal

Schedule

• IX:
• EX: Height adjustment of ETMX. Centering of QPD in TMSX.
• IY: Leak test in the next week.
• EY: Offload of GAS filters.
• Type-B: Replacement of H2 geophone in SR2. Stand-alone SM driver for SR3.
• Type-Bp: FC on PR3. Installation of traverser limit SW in PR3. For PR2 in 6/14-15. MSB to PR3 in 6/16-17.
• Type-C: Alignment of OMC. Recovery of OMMT2 suspension. Adjustment of H3 OSEM in OMMT1 after the final alignment (if possible).

Status

• Replacement of flip cables: EXT and BF temp.
• TM height setting: Following the cooling.
• Oplev: Investigating the relation between laser and temperature.
• ACC:
• Commissioning in air:
• Commissioning in vacuum: GR in Y-arm.
• Acceptance check:
• PF actuator: At the in-vacuum commissioning.
• New vacuum pumps for V-chambers: Fan was attached to IYV pump. Test in the next week.
• Heater control: Pending.
• TMS: QPD in EX.

Discussion

VIS Meeting

Date: 2022/6/10 14:00-14:15

Participants: Takahashi, Uchiyama, Ushiba, Fabian, Tanaka, Aso

Summary Report

Type-A

• Adjusted the height of ETMX.
• Offloaded the GAS filters in EY and IY.

Type-B

In SR2 we identified that geophone 2 had a problem, so we replaced it with a spare one. Takahashi-san gave me the information about calibration factors, but I still have to take a look at it.

Type-Bp

• We installed new cable clamps and limit switches in PR3.
• We locked the suspension for First Contact application.

Type-C

• Recovered the IM touching the magnets in OMMT2 suspension.
• Performed the health check of OMMT1, OMMT2, and OSTM after the OMC alignment. It is necessary to adjust the H3 OSEM in OMMT1.

Electronics

Control

Schedule

• Type-A:
• Type-B: Stand-alone SM driver for SR3, Geophone work in SR2.
• Type-Bp: MSB on PR3. Traverser limit SW in PR2.
• Type-C:

Safety

Discussion

Travel Plans

(Date in Kamioka)

The week from 6/13

• Takahashi: 6/14-17
• Sato: 6/14-17
• Hirata: 6/14-17

The week from 6/20

• Takahashi:
• Sato:
• Hirata:

Next meeting

• 2022/6/17(FRI)