Complete simulation of the heavy ion linac PIAVE

PIAVE is the new injector under construction at LNL for the superconducting linac ALPI. The beam, generated by an ECR source, will be bunched by a three harmonic buncher and accelerated by a couple of superconducting RFQs, followed by eight QWR, for an equivalent voltage of 8 MV (U⁺²⁸ beam). We present here the complete simulation of the injector, where the same ensemble of particles is transported from the buncher up to ALPI. The code used are PARMTEQM, PARMILA and specific software has been written to transport the particles in the field distribution (calculated by MAFIA) of the transition between the two RFQs and in the QWRs accelerating gaps. The performances of this design, especially for what longitudinal emittance is concerned, are discussed in this paper