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| = Minute of PEM meeting = ---- |
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| * Date: 2019/6/11 16:00-18:00(JST) * Attendance: Yokozawa, Washimi, Miyo, Kozakai, Oshino, Mori, Miyoki, Okawa, Fujikawa, TTanaka, Kaihotsu, Kokeyama * Expand meeting |
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| * PEM status (Yokozawa) (10min) [[attachment:PEM_meeting_190611.pdf|pdf]] * Virgo PEM measurements (Yokozawa) (10min)[[attachment:PEM_meeting_190611.pdf|pdf]] |
* PEM status (Yokozawa) (10min) * 2nd installation was almost finished, need the check of the chamber PEMs * Virgo PEM measurements (Yokozawa) (10min) * Sound decay measurement * IYC chamber characterization * Comparison between Virgo and KAGRA |
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| * Why EXC? Removed the cryopayload and prepared ADC. Additional measurement by IYC * FFU on/off * Around 1Hz from cooler, 20.45, 30.62, 60.94, ... No problem to KAGRA sensitivity * Evaluate the magnetic field by simulation after closing the chamber. * Acoustic measurement, 13-59Hz and more than 1kHz from cooloer. (also, about 10kHz with 2Hz frequency) * Coherence observed from only the fan * 2Hz did not appear at the chamber accelerometer * X-end PEM models * Before/After cooling down * 0.5 deg increasing by the ondotori * Thunderstorm was detected by magnetometer * |
Minute of PEM meeting
- Date: 2019/6/11 16:00-18:00(JST)
- Attendance: Yokozawa, Washimi, Miyo, Kozakai, Oshino, Mori, Miyoki, Okawa, Fujikawa, TTanaka, Kaihotsu, Kokeyama
- Expand meeting
=== Agenda ===
- PEM status (Yokozawa) (10min)
- 2nd installation was almost finished, need the check of the chamber PEMs
- Virgo PEM measurements (Yokozawa) (10min)
- Sound decay measurement
- IYC chamber characterization
- Comparison between Virgo and KAGRA
- Characterization of the EXC chamber (Washimi) (10min)
- Why EXC? Removed the cryopayload and prepared ADC. Additional measurement by IYC
- FFU on/off
- Around 1Hz from cooler, 20.45, 30.62, 60.94, ... No problem to KAGRA sensitivity
- Evaluate the magnetic field by simulation after closing the chamber.
- Acoustic measurement, 13-59Hz and more than 1kHz from cooloer. (also, about 10kHz with 2Hz frequency)
- Coherence observed from only the fan
- 2Hz did not appear at the chamber accelerometer
- X-end PEM models
- Before/After cooling down
- 0.5 deg increasing by the ondotori
- Thunderstorm was detected by magnetometer
- Power supply monitors (Washimi) (10min)
- Acoustic and magnetic field measurement (Kaihotsu) (10min)
- Current PEM measurements (Mori) (10min)
- Ground motion (Miyo) (10min)
- Sound injection (TTanaka) (10min)
- PEM injection plan (TTanaka) (10min)
- Kozapy+ (Kozakai) (20min)
Report from DetChar (Yamamoto, Kokeyama) (10min)
- Summary and future prospect (Yokozawa) (10min)