• KAGRA
• Commissioning
• Weekly
• 20180904
• Minute

Minute of KAGRA commissioning meeting

• Date: 2018/9/4 11AM~12PM
• Attendance: Miyakawa, Izumi, Yamamoto, Oshino, Aso
  • eZuce: Yokozawa, Suzuki, Ushiba

Night work

• It was quite smooth to transit laser hazard from moving to night mode.
• Woking time of from 3pm to 9pm was quite good for the amount of work.
• Position of IMMT1 was moved not only 2cm to X direction but also to the longitudinal direction.
• One of the pico motor on IMMT2 did not work.
• We need to relocate the QPD position for IMMT1 which crosses to Oplev light.
• Target in front of PR3 worked quite well.
• It was difficult to take a rest or dinner.
• One of the concern was that if something happens on IOO for example, IOO people are not there in the night time.
  • Troubles should be announced after the night work and they should be fixed in the morning work.
• Needs staff assignment for the night work.

Power outage

• Commissioning team will send e-mail by 9pm on Thursday whether they will work on Saturday or not.

ETMX

• Cross talk on ETMX is caused by grounding of High power coil driver.

Others

• Next meeting: 9/11.