Since 2001 considerable effort has been
devoted to the study of a possible replacement of the continuous-transfer
extraction mode from the PS to the SPS. Such an approach, called
Multi-Turn Extraction (MTE), is based on capture of the beam inside
stable islands of transverse phase space, generated by sextupoles
and octupoles, thanks to a properly chosen tune variation. Both numerical
simulations and measurements with beam were performed to understand
the properties of this new extraction mode.
The experimental study
was completed at the end of 2004 and by the end of 2005 a scheme
to implement this novel approach in the PS machine was defined
and its performance assessed. The MTE Project has the mandate to
and to commission the new extraction scheme.