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Different facilities for hadrontherapy have been built or designed in the recent past and Italy is present in the field either with synchrotron-based and with cyclotron-based facilities. For both types of accelerators the availability of high brightness multiply charged ion beams is essential and R&D efforts in this subject are increasing. In order to cope the stringent requests of a hospital environmental at INFN-LNS a new ion source called AISHa is under realization exploiting all the knowledge acquired in last decades in the ion source design and realization. Therefore the AISHa source has been designed by keeping in mind the typical requirements of hospital-based facilities, where the minimization of the mean time between failures (MTBF) is a key point together with the maintenance operations, which should be fast and easy. Some critical parts of the body source, in particular the plasma chamber and the hexapole containment chamber, have been studied and optimized with the FEM software. In the paper the entire structure will be described, with a particular attention to thermo-mechanical simulations of the plasma chamber and the electrostatic and structural simulation of the hexapole containment chamber.

simulation, computation