Progpam for calculating high-current magnet systems of a collective accelerator with high-degree field homogeneity

The WIST subroutine meant for calculating solenoids with an alternating winding pitch used in collective ion accelerators for shaping magnetic fields of special configurations including highly homogeneous fields with small relative gradient of the longitudinal component is described. The subroutine is used for calculating preaccelerating solenoids, geometry of coils for the transport chamber of the KUTI-20 accelerator induction section, as well as for determining current densities induced in the structural elements of the KUTI prototype