ALICEでのお祝いの様子 Geneva, 23 November 2009. Today the LHC circulated two beams simultaneously for the first time, allowing the operators to test the synchronization of the beams and giving the experiments their first chance to look for proton-proton collisions. Two circulating beams bring first collisions in the LHC 日本時間11/23(月)深夜、LHCにおける最初の衝突実験が行われた。その2日ほど前に、陽子ビームがLHCを周回し、14ヶ月ぶりに元気な姿をみせた。そして今度の衝突でさらに
![はじめての衝突 :動き出すLHC - Active Galactic : 11次元と自然科学と拷問的日常](https://cdn-ak-scissors.b.st-hatena.com/image/square/c40a14054ee1d117771ce9e60b9f8732e3bfe337/height=288;version=1;width=512/https%3A%2F%2Fcdn-ak.f.st-hatena.com%2Fimages%2Ffotolife%2Fa%2Factive_galactic%2F20091125%2F20091125055214.png)