MECHANICAL LIMITATIONS IN HIGH AVERAGE POWER LINACS

The intention of providing high average power beams being presently proposed involves the deposition of large amounts of heat in the acceleration waveguide; the thermal qradients which result can permanently de-tune the RF itructure. This paper presents an outline of the method of analyzing such a problem, taking the disc-loaded transmission line as example. The fields of the TM-01 acceleration mode in a disc-loaded, slow-wave structure are:1 EZ = E. Jo(klr) sin (wt- kgz) Er = E. $ J (k r) cos 1 ' l (wt- kgz) r<a E ok B+ = T 5 J,(klr) cos (wt- kgz