2 - CERN Accelerator School
2 - CERN Accelerator School
2 - CERN Accelerator School
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Transverse manipulation:<br />
novel multi-turn multi turn extraction –<br />
I<br />
The main ingredients of the novel extraction:<br />
The beam splitting is not performed using a<br />
mechanical device, thus avoiding losses. Indeed, the<br />
beam is separated in the transverse phase space<br />
using<br />
Nonlinear magnetic elements (sextupoles ad<br />
octupoles) to create stable islands. islands<br />
Slow (adiabatic ( adiabatic) ) tune-variation tune variation to cross an<br />
appropriate resonance.<br />
NB: third-order third third-order order extraction is is based on<br />
separatrices (see O. Brüning Br Brüning ning lecture)<br />
Massimo Giovannozzi CAS - 2-14 14 October 2005 31
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