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Deletions are marked like this. | Additions are marked like this. |
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* Attendance: Miyakawa, Aso, Yokozawa, Ohishi, Kokeyama, Miyoki, Tahara, Enomoto, Stefan, Tomura, Ushiyama, Nakano * eZuce: Ushiba, Izumi, Inoue, Yamamoto(Toyama), Suzuki, Hirose, Shoda |
* Attendance: Miyakawa, Yokozawa, Stefan, Nakano, Yamamoto * eZuce: Shoda, Ushiba, Hirose, Eleonora, Izumi, Yamamoto(Toyama), Kokeyama, Miyoki |
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== Laser == | |
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* Transmissivity of Faraday Isolator suddenly reduced 60% to 40%. * Starding Fiber amp failed due to too low power at the sensor. * We will use spare at Mio labs. We can use current low power laser, so schedule won't be changed so much. |
== PMC == * Summary of PMC work by Stefan during his stay at KAGRA * Two PZT steering mirrors were installed yesterday for input beam to IMC. * Calibration to Hz will be done today. * Thermal drive is sill missing. * Needs fitness, noise budget or something. * Probably we do not need to change HV PZT driver by O3, but needs estimation. * PMC servo modifications -> Stefan * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=5155]] * FSS and PMC locked together -> Nakano, Stefan * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=5318]] * PMC autolocking sped up -> Stefan, Nakano * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=5320]] == Others == * Beam height brain storming -> next week? * ETMX and ITMX should be located at half low temperature stage and room temperature stage. It means that ~5mm off from the nominal position. Type A can compensate ~5mm. * --(Necessary number of High power coil driver -> Aso)-- |
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== IMMT == * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=5274]] * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=5287]] * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=5292]] * Changed titanium screws. * IMMT1 repare was done, with 1cm position accuracy. * 1cm is not enough(Izumi). * IMMT2 repare will be held 7/9~. |
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== PMC == * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=5295]] * Offset was implemented. * Whitening will be implemented by daughter board. * Needs gain at low frequency in digital loop. == Useful scripts for RT-models == * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=5282]] * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=5224]] == Others == * Next meeting: 6/26. |
* Next meeting: 7/3. |
Minute of KAGRA commissioning meeting
- Date: 2018/6/26 11AM~12PM
- Attendance: Miyakawa, Yokozawa, Stefan, Nakano, Yamamoto
- eZuce: Shoda, Ushiba, Hirose, Eleonora, Izumi, Yamamoto(Toyama), Kokeyama, Miyoki
PMC
- Summary of PMC work by Stefan during his stay at KAGRA
- Two PZT steering mirrors were installed yesterday for input beam to IMC.
- Calibration to Hz will be done today.
- Thermal drive is sill missing.
- Needs fitness, noise budget or something.
- Probably we do not need to change HV PZT driver by O3, but needs estimation.
PMC servo modifications -> Stefan
FSS and PMC locked together -> Nakano, Stefan
PMC autolocking sped up -> Stefan, Nakano
Others
Beam height brain storming -> next week?
- ETMX and ITMX should be located at half low temperature stage and room temperature stage. It means that ~5mm off from the nominal position. Type A can compensate ~5mm.
Necessary number of High power coil driver -> Aso
- Next meeting: 7/3.