• Corpus ID: 10199682

Linear collider test facility: ATF2 final focus active stabilisation pertinence

@inproceedings{Bolzon2009LinearCT,
  title={Linear collider test facility: ATF2 final focus active stabilisation pertinence},
  author={B. Bolzon and A. Jeremie and Andrei Seryi and Ph. Bambade and Yves R{\'e}nier},
  year={2009}
}
Beam motion at the Interaction Point (IP) of ATF2 has to be less than 10nm relative to the instrumentation used for measurements. Due to ground motion (GM), the beam can pass off-axis through the quadrupoles of the beam line and hence be deflected. It was shown in previous studies that good spatial coherence of the GM over a few meters makes the relative motion of the Final Doublets (FD) small enough for the tolerance not to be exceeded. However, since the coherence drops rapidly with distance… 

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