Construction design and technology of manufacture of the tanks and rods of rf resonators for the U-400M isochronous heavy ion cyclotron

The construction design and technology of manifacture of the tanks and rods of rf resonators for the U 400M isochronous heavy ion cyclotron are designed. The construction process rests on the use of the vacuum diffusion welding method. Studies are carried out to investigate the process of welding method. Studies are also carried out to investigate the process of welding copper with stainless steel. The results of those studies and the welding regime are given. The use of vacuum diffusion welding has permitted a new design of the cyclotron tanks and rods. In comparison with the conventional design, the surface of the tanks and rods inside the vacuum volume is decreased by a factor of 2-3, the accuracy is enhanced, and water-cooling channels are located outside the vacuum volume. 6 refs.; 5 figs