Weekly PEM meeting
- 2025/01/24(Fri) 17:00-
- Regular meeting
Zoom2 : https://zoom.us/j/6676627462
General announcement
- Author list 2024
- Thank you for your contribution
- Virgo ENV member visiting
- KAGRA 2/17 - 3/8
- Plan
- Noise hunting (PEM injection) toward the 10 Mpc would be first priority
- IFI characterization (not decided)
- OMC shround installation (not decided)
- Measurement of the coldbox in somewhere Japan
- O4a noise budget paper
- If you have a plan to write the paper using O4a data and PEM, please let me know.
- Start the investigation for the new subsystem, noise subtraction, under the SEO.
- Establish
Meeting and Conference issue
- TOBA and Gravity Gradient Workshop
- Now discussing among the member
- Candidate 3/14 - 15
- JPS meeting
- Online
- Ohashi
- Estimation of the microseismic motion at the KAGRA site using neural networks (II)
- Sato
- 重力波望遠鏡KAGRAにおける音響雑音
Other meetings url
If you have some presentation about PEM related, please contact to me.
Business travel
- To Kamioka
- Virgo member (2/17 - 3/8)
- Sato Niigata.U (2/12-21?)
- Aoyama group (2/24 - 2/28)
- From Kamioka
- Yokozawa (Tokyo 2/25,26)
- Yokozawa (Kashiwa, Tokyo 3/12-15)
General issue
- Commissioning
- PRFPMI
- cooling down is performing
- All suspensions achieved 88-89 K, keep this temperature
- Optical table treatment for high power operation done
- Installing the BS or reducer to avoid the PD saturation
- 10 W IFO lock (PRFPMI RF lock) performed ~ 5 min, need the tuning of the ASC with high power
- and we need to add the 1.7 Hz L damping, trial using the PF oplevs
- Noise budget performed (before cooling down)
- cooling down is performing
- PRFPMI
出張PEM injection (planning form)
Jurnal paper issue
- O4 PEM paper
- Start to investigate the topics
- Schumann Resonance paper
- Todo list work
- 1 Hz seismic motion paper
- Start the investigation
Preparation for O4b
- Coil preparation for magnetic injection
- Voltmeter preparation
- AC power monitor installation
- DC power monitor installation
Progress report
- Sato
- Acoustic injection analysis
- Ohashi
- Microseismic noise with machine learning
- Kume, Ueno
- Noise subtraction
- Nishizawa
- Water newtonian noise
- Magnetic field analysis
- Washimi
- Preparation of the injection tools
- Yokozawa
- Noise hunting