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| 14:00 - 15:00 on SeeVogh | 14:00 - 15:00 on !SeeVogh |
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| Participants: | Participants: Arai, H. Yamamoto, Michimura, Somiya, Aso, Hirose, Miyakawa, Kokeyama |
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| * Installation of the detection optics * Digital system integration |
* Installation of the detection optics * Above two will be done in the week of 2/15 |
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| * Michimura-kun will make a document * Digital system integration and lock acquisition * Need to test the system beforehand: Will consult with Kokeyama-san * Aso will try to gather man power (mostly students) |
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| * RF PD (Aso, Doi) * Expected delivery 2/15 |
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| * RF PD (Aso, Doi) |
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| * RF low loss cables with N connectors: order status * Diff-to-single cables |
* RF flexible cables with N connectors: ordered * Spare RF flexible cables with SMA connectors: waiting for Ohashi's approval * Diff-to-single cables: to be made at the time of installation |
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| * Magnetometer requirement: According to Shimoda report (JGW-T1504459), the magnetic field fluctuation of 0.5 pT/rtHz @ 10 Hz creates the displacement noise of 1e-20 m/rtHz @ 10 Hz for bKAGRA ITM/ETM. If we keep the magnet size as current design (2mm dia, 2mm thick), the magnetic field fluctuation should be smaller than 7 pT/rtHz @ 10 Hz, considering the displacement noise requirement is 1.5e-19 m/rtHz @ 10 Hz. So, 7 pT/rtHz @ 10 Hz will be the requirement for the magnetometer noise (Bartington Mag-03 meets this requirement). However, considering the magnetic field measurement done by Virgo (30 pT/rtHz @ 10 Hz with equipments installed), we might have to change the magnet size to even smaller one. * Measurement in LIGO: About 10pT/rtHz in front of an electronics rack * MIF requirement: we want to see 7pT |
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ISC Meeting on 2016/1/25
14:00 - 15:00 on SeeVogh
Participants: Arai, H. Yamamoto, Michimura, Somiya, Aso, Hirose, Miyakawa, Kokeyama
- Schedule for iKAGRA (Aso)
- Installation of the analog electronics
- Installation of the detection optics
- Above two will be done in the week of 2/15
- Initial alignment procedure
- Michimura-kun will make a document
- Digital system integration and lock acquisition
- Need to test the system beforehand: Will consult with Kokeyama-san
- Aso will try to gather man power (mostly students)
- Electronics Preparation Status (Michimura, Aso)
- RF PD (Aso, Doi)
- Expected delivery 2/15
- Cable assembly
- RF flexible cables with N connectors: ordered
- Spare RF flexible cables with SMA connectors: waiting for Ohashi's approval
- Diff-to-single cables: to be made at the time of installation
- we have purchased all the other ISC cables
- RF PD (Aso, Doi)
- Magnet noise
- Magnetometer requirement(Michimura)
- Magnetometer requirement: According to Shimoda report (JGW-T1504459), the magnetic field fluctuation of 0.5 pT/rtHz @ 10 Hz creates the displacement noise of 1e-20 m/rtHz @ 10 Hz for bKAGRA ITM/ETM. If we keep the magnet size as current design (2mm dia, 2mm thick), the magnetic field fluctuation should be smaller than 7 pT/rtHz @ 10 Hz, considering the displacement noise requirement is 1.5e-19 m/rtHz @ 10 Hz. So, 7 pT/rtHz @ 10 Hz will be the requirement for the magnetometer noise (Bartington Mag-03 meets this requirement). However, considering the magnetic field measurement done by Virgo (30 pT/rtHz @ 10 Hz with equipments installed), we might have to change the magnet size to even smaller one.
- Measurement in LIGO: About 10pT/rtHz in front of an electronics rack
- MIF requirement: we want to see 7pT
- Magnetometer requirement(Michimura)
- FFT simulation (H. Yamamoto, Hirose)
- Next meting 2016/2/16?