On production of high energy powerful ion beams with small emittance

Irradiation of a target by short bunches of high energy heavy ions is one of the promising directions in the studies of thermonuclear fusion. For spherically symmetric irradiation it is necessary to produce a number of spatially separated bunches. For their successful focusing onto the target a sufficiently small common emittance should be provided. The full energy W of all accelerated particles should be of order of a few megajoules [1,2]. The problems are assumed to be solved with the help of accelerating systems which include several conventional synchrotrons and storage rings [2]. It is however clear that when meeting the above requirements there will be an advantage in simplicity and cost if from the very beginning these requirements are consistent with a special arrangement of the synchrotron-storage ring facility. In particular, production of the required number of ion bunches with a small given emittance, their spatial separation and also the control for them, all this may be carried out by arranging of several accelerating tracks with their own equilibrium orbits and with a common homogeneous magnetic field. Independence of the bunches in the tracks over the coherent effects is due to the individual vacuum chambers available.