NEW PRESTRIPPING SECTION OF THE MILAC LINEAR ACCELERATOR DESIGNED FOR ACCELERATING A HIGH CURRENT BEAM OF LIGHT IONS

The results on development and construction of the prestripping section (A/q=4) for multicharge ion linear accelerator (MILAC) designed for acceleration of He + ion beam from 30 keV/u to 975 keV/u are presented. In the accelerating interdigital IH structure He + ion beam were accelerated using the method of alternating phase focusing with stepped changing the synchronous phase along the focusing period. In order to increase the beam capture into the mode of acceleration, the growing field was used in the initial part of the structure. The elements of the accelerating structure and dynamics of the ion beam were calculated. The maximum calculated current being accelerated was 12 mA with the injection current of 60 mA. All the systems of the accelerating structure were developed, designed, and manufactured; assembling and adjustment of the prestripping section are under way.