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Size: 2073
Comment:
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Size: 2498
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
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| * Attendance: Miyakawa, Uchiyama, Aso, Yamamoto, Yokozawa, Enomoto, Stefan * eZuce: Izumi, Nakano, Inoue, Yamamoto(Toyama), Suzuki, Miyoki, Ushiba, Eleonora, Shoda, Tegoshi |
* Attendance: Miyakawa, Aso, Yamamoto, Tomura, Enomoto * eZuce: Izumi, Inoue, Yamamoto(Toyama), Suzuki, Miyoki, Yokozawa, Ohashi, Izumi, Nakano, Stefan |
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| == ETMX status == * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=5224]] * ring on f0 got lower and on the f1 by a few mm. * f0 TF had no response. Line to coil was cut. It had been repaired before and it was used again. * It will be fixed around September as 1week work. Whole coil will be replaced. == X arm commissioning/preparation == * WFS target: 10nrad. * == Satellite box modification == * 100nF cap will be implemented to avoid an oscillation. It introduce 41Hz pole. |
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| == ETMX status == | |
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| == X arm commissioning/preparation == |
Minute of KAGRA commissioning meeting
- Date: 2018/6/12 11AM~12PM
- Attendance: Miyakawa, Aso, Yamamoto, Tomura, Enomoto
- eZuce: Izumi, Inoue, Yamamoto(Toyama), Suzuki, Miyoki, Yokozawa, Ohashi, Izumi, Nakano, Stefan
0. Schedule
- k1ix0 will be needed by September for NAB PD.
ETMX status
http://klog.icrr.u-tokyo.ac.jp/osl/?r=5224
- ring on f0 got lower and on the f1 by a few mm.
- f0 TF had no response. Line to coil was cut. It had been repaired before and it was used again.
- It will be fixed around September as 1week work. Whole coil will be replaced.
X arm commissioning/preparation
- WFS target: 10nrad.
Satellite box modification
- 100nF cap will be implemented to avoid an oscillation. It introduce 41Hz pole.
MC realignment
FSS BO
PMC installation, circuits, adding offset
IOO schedule
1. X arm commissioning
Do we need WFS?(Eleonora) -> Yes, with control system.(Izumi)
- Gouy phase measurement for green is also necessary. (Akutsu)
- Both mirrors are at the room temperature. (Uchiyama)
- Needs preparation list. (Aso)
- Loss measurement will performed mainly reflection light. (Izumi)
Simulation of loss? (Eleonora) -> Hirose, Hiro Yamamoto
Camera view? (Stefan) -> PCal camera, transmitted camera
Which port will be used for locking? (Miyakawa) -> REFL port
2. New 40 W laser
- RIN measurement
- Non-stational noise happens but it is not related water cooler.
- This RIN level cannot reach shotnoise level with the first ISS loop. Current noise is 2 orders lager than NPRO noise. Needs 2nd loop to reach design level.
- Beam profile
3. PMC electronic hack
- MATSUSADA HV driver has 10uV/rHz, quite high.
- Slow output can be used as offset, and 2nd EXC point will be used as input.
- LIGO is not using temperature controller. (Stefan)
Others
- Next meeting: 5/29.