Attachment '20130730_detchar_minutes.txt'

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   1                              DetChar MTG
   2                              ===========
   3 
   4 Author: Takahiro Yamamoto
   5 Date: 2013/07/30
   6 
   7 
   8 出席者
   9 端山, 西澤, 大原, 横澤, 譲原, 山本
  10 Table of Contents
  11 =================
  12 1 Summary
  13 2 Agenda
  14     2.1 KAGRA f2fについて[端山]
  15     2.2 ニュートニアンノイズについて[端山]
  16     2.3 体制の再設定[端山]
  17     2.4 観測時のシフト体制[端山]
  18 
  19 
  20 1 Summary 
  21 ----------
  22   - KAGRA f2fについて: 横澤, 譲原, 山本で分担
  23   - ニュートニアンノイズについて: KAGRA siteにおける影響を見積もる必要有り
  24   - 体制の再設定: 一部グループのリーダーが決定
  25         Line Monitor: 伊藤
  26         Glitch Monitor: 新潟大?
  27         Noise Budget: 端山, 宮川, 麻生
  28   - 観測時のシフト体制: TAMA, CLIOでの経験者から意見を集約
  29 
  30 2 Agenda 
  31 ---------
  32 
  33 2.1 KAGRA f2fについて[端山] 
  34 ============================
  35    - DetChar報告は横澤, 譲原, 山本で分担
  36    - 相関磁場については3日目に西澤さん
  37 
  38 2.2 ニュートニアンノイズについて[端山] 
  39 =======================================
  40    - aLIGOで10-20Hzで支配的になる可能性
  41    - 参考:Drigger, et. al.(2012) [http://arxiv-web3.library.cornell.edu/abs/1207.0275]
  42    - 大きさはどうやって見積もったのか[西澤]
  43      - 1つのテストマスを用意し、振動を測定
  44    - 雑音源はファンなど
  45    - 彼らはtransfer functionの測定をしているのか[西澤]
  46      - よくわからない
  47      - 伝達関数が分かれば大きな問題にはならないのでは[西澤]
  48    - この結果をKAGRAに適用かは不明
  49    - KAGRAとしては
  50      - 山の収縮
  51      - わき水による地面振動/音響振動
  52    - 山の収縮は高周波側にでるのか[西澤]
  53      - 今のところわからない
  54      - 気圧変化なら低周波側なので問題無いのでは[西澤]
  55      - なんらかのアップコンバートされて観測帯域に入るのでは
  56      - 過去に中村さんが調べていた
  57    - 坑内で水の湧き出る音が常に聞こえている(辰巳さんの報告)
  58    - KAGRA観測時にわき水がどうなっているかは分からない
  59 
  60 2.3 体制の再設定[端山] 
  61 =======================
  62    - 各モニタを開発する小グループに分かれて作業する
  63    - 小グループの段階で実験の人間としっかりコンタクトを取る
  64    - 2-3週間おきに各小グループの報告を行う
  65    - Line Monitorについては伊藤さんがリーダーの方向で話が進んでいる
  66    - Glitch Monitorを新潟大で出来ないか
  67      - 現状マンパワーが足りていないので保留[大原]
  68    - Noise Budgetは端山, 宮川, 麻生が中心で進める
  69    - Multi-Channel Analysisは韓国グループと共同で進める
  70 
  71 2.4 観測時のシフト体制[端山] 
  72 =============================
  73    - 観測体制でのDetCharタスク
  74      - 辰巳さん, 安東さん, 三代木さんらTAMA, CLIOでの経験者からの意見を集約

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