Machine for the deposition of material on a substrate by the cathodic sputtering technique, of the type provided with a cathode assembly comprising: - a tubular support extending substantially along a first axis; - a plurality of magnetic elements constrained to said tubular support and spaced from one another at least along said first axis, or along at least one direction substantially parallel to said first axis, and wherein each of said magnetic elements has at least one second axis, of magnetic orientation, linking the respective magnetic poles (N; S) and comprises an outer side jutting from the tubular support and an inner side facing the axis of said tubular support; - at least one target body having substantially cylindrical shape and being arranged spaced around said cylindrical support with said plurality of magnetic elements and comprising at least said material to be deposited on the substrate, said outer side of each magnetic element facing said at least one target body; - movement means for the relative movement between said tubular support, with said plurality of magnetic elements, and said at least one target body; wherein said at least one second axis linking the poles of each magnetic element is transverse to said first axis of the tubular support and in that the polarity (S; N) of the outer sides of two consecutive magnetic elements along said first axis, or along at least one direction substantially parallel to said first axis, on said tubular support is alternating, characterized in that each of said magnetic elements comprises a plurality of magnets arranged along a helicoid line around said first axis of said tubular support, and in that said tubular support is at least partially made of a magnetic or ferromagnetic material. - a tubular support extending substantially along a first axis; - a plurality of magnetic elements constrained to said tubular support and spaced from one another at least along said first axis, or along at least one direction substantially parallel to said first axis, and wherein each of said magnetic elements has at least one second axis, of magnetic orientation, linking the respective magnetic poles (N; S) and comprises an outer side jutting from the tubular support and an inner side facing the axis of said tubular support; - at least one target body having substantially cylindrical shape and being arranged spaced around said cylindrical support with said plurality of magnetic elements and comprising at least said material to be deposited on the substrate, said outer side of each magnetic element facing said at least one target body; - movement means for the relative movement between said tubular support, with said plurality of magnetic elements, and said at least one target body; wherein said at least one second axis linking the poles of each magnetic element is transverse to said first axis of the tubular support and in that the polarity (S; N) of the outer sides of two consecutive magnetic elements along said first axis, or along at least one direction substantially parallel to said first axis, on said tubular support is alternating, characterized in that each of said magnetic elements comprises a plurality of magnets arranged along a helicoid line around said first axis of said tubular support, and in that said tubular support is at least partially made of a magnetic or ferromagnetic material.