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実験データから自動でデータ解析する
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みんなのPython勉強会#74の懇親会LTで発表した内容です。
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実験データから自動でデータ解析する
1.
実験データから自動でデータ解析する 超伝導体の臨界電流値を自動で求める 2021/10/13 森田 太郎
2.
@jirorian_tele 自己紹介 • 博士課程3年 • Nb3Sn超伝導体を研究してます。 •
Python, Julia, matlab, go… 森田 太郎 (jirorian_tele) 2
3.
@jirorian_tele 超伝導体とは? • 電気抵抗がゼロ • ただし限られた条件下で •
臨界電流、臨界温度、臨界磁場 3 臨界電流を求めることが重要 Photo by:ITER Photo by: フジクラ
4.
@jirorian_tele 臨界電流を求める • I -
V 特性を測定する • 1 µVを電界基準 • 目測で1 µVのところで線を引く 4 5.5 A
5.
@jirorian_tele たくさんの実験データ • 1つずつのデータに対して線を引 いて求めるのはめんどくさい • 自動化しよう 5
6.
@jirorian_tele 実は既にある。がしかし… • データ全体 -
1 µV で0に一番近いデータをIcとしていた • データ数が少ない場合は正確ではない • ノイズの影響を受けやすい 6 従来法
7.
@jirorian_tele ニーズはあったけど・・ • プログラミングの機会が少ない業界(錬金術) • PCは計測器制御と論文執筆のみ •
Pythonをそもそも知らない • 環境構築とかわからない • 時間がない 7 ニーズはある。しかし… 誰もやらなかった (やりたくなかった)
8.
@jirorian_tele 今回のコード 1. スプライン補完: y_ fi t 2.
y_ fi t - 1 µv をsolverで解く 8 • 離散データを関数化 → 解を求める • 従来法のデータ数が少ない問題クリア • 従来法よりもノイズ影響が小さい メリット
9.
@jirorian_tele 得られたデータ • 60分 →
1秒 • 精度がよい 9
10.
@jirorian_tele Pythonはほんとにすごい • 強力な科学技術計算パッケージ群 • Numpy,
scipy, pandas, matplotlib • 行列計算、統計処理、データ補間などラクラク • Jupyter labでテストしながら気軽に書ける • API化とかもできる!(今回のコードも予定) • 科学技術計算専用言語ではない。組み合わせは無限 10
11.
ありがとうございました
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