Details of the initial part of the tungsten ion linac for particle track membranes production

Data for designing, tuning and tests on the initial part of a heavy ion linac main system, the 35 kV ion beam injector with a MEVVA-type ion source, the 5 MeV 3 m long acceleration section with an RFQ and the 0.4 MeV/amu 6 m long pre-stripper section with alternating phase focusing (APF), are presented. The injector produces intense tungsten ion beam with the a charge of +4, a beam pulse length of 300 mcs and a repetition rate of 25 pps. The main construction feature of the sectionalized RFQ structure are the ceramic insulators as mechanical supports for the 4-rod modulated line. The high power test data for the single cell of the RFQ structure are given. The APF prestripper section design is described