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| ## page was renamed from noisebudget *[[http://gw.icrr.u-tokyo.ac.jp:8888/clio_blog/2008/11/081109rf-intensity-noise-080626.html|(2008/12/19 by 我妻)]] |
= CLIO常温 noise budget = {{attachment:CLIO_NoiseBudget_081219+.png}} |
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| [[target|{{attachment:CLIO_NoiseBudget_081219_1.png}}]] [[attachment:CLIO_NoiseBudget_081219.png]] |
(2008/12/19 by 我妻) (2009/3/21 : RF Intensity noise reviced（実測データで書き換え）) |
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| *周波数雑音: inline armのerror信号を1e12[V/m], cavity pole 248Hzで換算してプロット。換算係数は100kHz付近のスペクトル形状が変位雑音と一致するように選んだ。8kHz以上で感度を制限。 | [[attachment:CLIO_NoiseBudget_081219+.pdf]] |
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| *[[CLIO/data/IntensityNoise|Intensity noise]] | [[attachment:CLIO_NoiseBudget_081219_C+.pdf]] (5Hz ～ 3kHz) |
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| *ショット雑音・検出系雑音: inline/perpendのPDのgdet, idetより復調出力に現れるショット雑音電圧・検出系雑音電圧を計算し、これを干渉計の応答および上記周波数雑音の応答で換算。500Hz~8kHzで感度を制限。(若干perp shot noiseは若干推定にズレがあるようだが) | == noise source 解説 == *[[CLIO/NoiseBudgets/seismic|地面振動雑音]] |
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| *[[CLIO/data/RFIntensityNoise|RF intensity noise]] *[[FeedbackFilter|フィルタ雑音]]: [[http://gw.icrr.u-tokyo.ac.jp:8888/clio_blog/2008/10/mass-filter-circuit-noise.html|前出]]のフィルタの入力換算雑音vnを補正。error basedの感度、feedback basedの感度でフィルタ雑音の現れ方が変わる。ライン以外では今は問題なし。 *feedback basedの場合: dx_filerr = vn / H (Hは干渉計の応答) *error basedの場合: dx_filfb = vn G / H (Gはopenloop伝達関数) ---- *[[CLIO/req/noisebudgetLowPrediction|Noise budget:低温、予測]] |
*[[CLIO/NoiseBudgets/ThermalNoises|振り子の熱雑音]] *[[CLIO/NoiseBudgets/ThermalNoises|鏡の熱雑音]] *[[CLIO/NoiseBudgets/ShotDetectorNoise|ショット雑音・検出系雑音]] |
CLIO常温 noise budget
- (2008/12/19 by 我妻)
(2009/3/21 : RF Intensity noise reviced（実測データで書き換え）)