an obvious approach to fashioning a cfc body for a rotating anode is to cause the fibers to terminate on one end at the focal path and to terminate on the other end at the axis - proximal cooling body , as it is described using fig1 and 2 . in fig1 , a blank of an anode body 1 with a focal spot path 2 is shown that is composed of a composite fiber material , for example of a carbon fiber material ( cfc ) that has heat - conducting fibers 3 with particularly high heat conductivity in the longitudinal direction . the cup - like anode body 1 narrows and tapers in a shaft 4 . the anode body 1 exhibits an external diameter d , the focal spot path 2 exhibits a width b , and the shaft 4 exhibits a thickness d . a processed formed component of a rotating anode with a cooling arrangement is shown in fig2 that was generated from a blank . for this , a bore was produced in the center of the anode body 1 , through which a cooled bearing system 5 was placed and attached . in the anode body 1 , fibers 3 are aligned such that they dissipate heat from the focal spot path 2 applied at an angle in the outer region of the rotating anode above to the cooled bearing system 5 . so that all fibers 3 are in contact with the cooled bearing system 5 , even the fibers 3 proceeding parallel to the rotation axis , the bearing system 5 must be provided with a flange 6 that exhibits the width b . if it is desired that all fibers that begin under the focal path end at the cooling surface , and thus optimally use the excellent heat conductivity of the fibers in the lengthwise direction , then the diameter d of the flange 6 is determined from the focal path outer diameter d and the focal path width b as follows , due to the cross - section constant of the total amount of the fibers : ( d 2 ) 2 - ( d 2 - b ) 2 = ( d 2 ) 2 ⁢ ⁢ or for prevalent focal path geometries in the high - power tube range with a diameter of d = 200 mm and a focal path width of b = 15 mm , the flange diameter d must be relatively large , and that is difficult to realize in conventional tube design , thus , the example cited above yields a flange diameter of d = 105 mm . for this reason , in accordance with the invention the anode body 3 is composed of multiple parts , as this is described for three parts using the following figures . in fig3 , a first blank is shown that exhibits an outer diameter d and a focal spot path exhibiting a width of b 1 . the blank 7 is formed as a first shell - shaped portion 8 and a shaft - like portion 9 with a diameter d 1 . the inner wall of the shell - shaped part 8 exhibits a shape that corresponds to the curve r i1 ( x ), whereby x is the distance of the curve from the upper edge of the blank 7 . the outer wall follows the freely - determinable function r a1 ( x ) that determines the outer contour of the anode body . in order to arrive at the first processed formed component 10 shown in fig4 from the blank 7 , the shaft - like portion 9 is removed , by producing a bore 11 with a diameter d . in fig5 , a second blank 12 with a diameter d − b 1 and a focal spot path with a width b 2 are shown . the second blank 12 is also formed with a shell - shaped portion 13 and a shaft - like portion 14 with a diameter d 2 . the shape of the outer wall of the shell - shaped portion 13 functionally corresponds to the shape of the inner wall of the part 10 . the second processed formed component 16 shown in fig6 is arrived at from the second blank 12 by producing a bore 15 with the diameter d , whereby the portion 14 is removed . a third blank 17 with an external diameter d − b 1 − b 2 and a focal path surface with a width b 3 is shown in fig7 . the third blank 17 is also fashioned shell - like in the upper portion 18 and has a shaft - like portion 19 with a diameter d 3 . by introducing a bore 20 with a diameter d , at the processed third formed component 21 shown in fig8 is produced from the third blank 17 , whereby the portion 19 is removed . the shape of the outer wall of this third formed component 21 corresponds to the shape of the inner wall of the second formed component 16 . the three formed components 10 , 16 and 21 are now combined and connected with one another , such that a coherent cfc base body 22 results that is shown in fig9 . the interconnection of the n mechanically processed formed components can ensue in the framework of a solidification method , for example vy carbonization or via soldering . the connection of the finished body to the cooling surface can be implemented likewise . a cooling body 23 ( that , in the installed state , has a coolant flowing through it ), at the surface of which all heat - conducting fibers terminates is slid through the single bore arising in the cfc base body 22 , such that the heat is dissipated directly from the focal spot path 2 to the metallic cooling body 23 . as is already described , the cfc base body 22 is composed of n ( in this example n = 3 ) different formed components , in order to be able to use such a rotating anode in tubes of conventional design , the shaping of the blanks 7 , 12 and 17 is undertaken such that these fit into one another after the axial , concentric bores 11 , 15 and 20 with the diameter d are produced , without the mutual fitting surfaces themselves having to be appreciably processed . fibers would be split by processing of the fitting surfaces , and the optimal heat flow thus hindered . such an advantageous shaping of the blanks 7 , 12 and 17 is possible by appropriate design of the mold lining from which the blanks are formed ( set , knit , woven , prefiled , etc . ), if , for example , the desired outer contour of the anode base body is given by r a1 ( x ), whereby r a1 ( x )≧ d , then the outer contour of the mold lining for the outermost of the n formed components 10 is specified by ( r i ( x )) 2 ≈( r a ( x )) 2 −( db − b 2 )√{ square root over ( 1 +( r a ′( x )) 2 )}, whereby the pitch of the fibers in the shell - shaped region between the focal path and the shaft is accounted for by the term under the root . this inner contour ( specified by r i1 ( x )) of the outermost formed component 10 , that is identical to the outer contour of that mold lining on which the outermost formed component was formed , is , for r i1 ( x )& gt ; d , at the same time the new outer contour r a2 ( x ) for the second formed component 16 , the mold lining for which in this region can then be calculated analogously to the first mold lining . in the region r a2 ( x )& lt ; d , the outer contour of the second formed component 16 is largely freely determinable . it is only to be noted that it must be possible to accommodate the total fiber cross - section of the second formed component 16 within r a2 . so that real solutions to the equations are obtained , it is necessary , as already stated , for the outer contour values always to be selected such that the total fiber cross - section of the respective formed component can always be accommodated within rotating anode . this can be ensured by appropriate selection of the values for b . in other words : the diameter of the outer contour may never be so small that the circular area corresponding to it is smaller than the total cross - section of the fibers of the respective formed component . the desired geometry of the formed component thus can be easily calculated according to the principle of the cross - section constant of the entirety of the fibers and by suitable selection of the values b 1 through b n , and can be adjusted to desired values for d when either the outer or the inner contour of the anode base body is determined . a ) given use of blanks that are composed only of a loose fiber composite , whereby in this case suitable clampings are selected for mechanical processing of the blanks , and b ) given blanks that are already partially or are ultimately impregnated , reinforced , infiltrated , reaction - infiltrated , pyrolized , carbonized or graphited . the space requirement at the cooling body can be significantly reduced by the inventive device and method . with optimal utilization of the high axial heat conductivities of all carbon fibers beginning in the focal path , geometries are possible that correspond to the tube designs that are common today , thus resulting in , for example , a diameter of d = 62 mm given a diameter of d = 200 mm and a width of the individual focal spot paths of b 1 = b 2 = b 3 = 5 mm . a retrofitting of anodes with cfc base bodies in conventional tubes thus is also possible with optimal utilization of the high axial heat conductivity of the c - fibers . in the figures , for clarity only the temperature - conducting fibers 3 are shown . fibers proceeding in other directions , such as those specified in the patent application ser . no . 102 29 069 . 5 , naturally can be provided , however are not of fundamental importance for the present invention . although modifications and changes may be suggested by those skilled in the art , it is the intention of the inventor to embody within the patent warranted hereon all changes and modifications as reasonably and properly come within the scope of his contribution to the art .