Title :
Beam optics calculations in very high power microwave tubes
Author_Institution :
Litton Syst., San Carlos, CA, USA
Abstract :
The author outlines advances in computer simulation, computer-aided design procedures, and technology related to the formation, focusing, and collection of very high power beams used in superpower klystrons for advanced linear colliders, free-electron lasers, and other such high-power microwave (HPM) devices. Grading electrodes can be included in the beam formation region of Pierce guns and between the ceramic insulators to increase the high-voltage standoff limit (as in Van de Graaff accelerators). A theoretical basis for their use is established here. Recent improvements in the fully relativistic version of the deformable triangular mesh beam optics code written by the author are described. Selected test cases and examples of its use are presented. A high-perveance 1 MV Pierce gun having three grading electrodes is described which can provide a 1.83 GW 9.13 kJ./pulse beam.<>
Keywords :
digital simulation; electron guns; electron optics; electronic engineering computing; mesh generation; relativistic electron beam tubes; 1 MV; 1.83 GW; 9.13 kJ; Pierce guns; Van de Graaff accelerators; beam collection; beam focusing; beam formation region; beam optics calculations; computer simulation; computer-aided design procedures; deformable triangular mesh beam optics code; free-electron lasers; grading electrodes; high convergence electron guns; high perveance Pierce gun; high power beams; high power microwave tubes; high-voltage standoff limit; linear colliders; relativistic beam optics code; superpower klystrons; Colliding beam devices; Computer simulation; Design automation; Electrodes; Free electron lasers; Klystrons; Laser beams; Microwave devices; Microwave technology; Optical beams;
Conference_Titel :
Electron Devices Meeting, 1991. IEDM '91. Technical Digest., International
Conference_Location :
Washington, DC, USA
Print_ISBN :
0-7803-0243-5
DOI :
10.1109/IEDM.1991.235369
