Title :
Digital computer simulation of axisymmetric electron beams and guns of any energy
Author_Institution :
Thunderbird Simulations, Garland, TX, USA
Abstract :
SPEED, a program for the simulation of relativistic (or non-relativistic) electron guns with either space-charge limited (Childs´ Law), field emitted (Fowler-Nordheim), or specified injection emitters is described and demonstrated with several examples. The program can be fully relativistic with induced and applied magnetic fields and crossing trajectories. Basic relaxation techniques are employed on a rectangular array of squares to keep the program small and efficient, permitting large arrays for accurate and/or elaborate simulations. Smooth electrodes are created by extending fields into electrodes, which are described by quadratic equations. It is written in FORTRAN 77 employing Calcomp-Versatec-type plotting routines and can be run on virtually any computer.<>
Keywords :
beam handling techniques; digital simulation; electron beams; electron guns; physics computing; Calcomp-Versatec-type plotting routines; Childs´ Law; FORTRAN 77; SPEED; axisymmetric electron beams; crossing trajectories; digital computer simulation; electron guns; field emitted; injection emitters; magnetic fields; quadratic equations; rectangular array; relaxation techniques; space-charge limited; squares; Cathodes; Computational modeling; Computer simulation; Electrodes; Electron beams; Electron guns; Equations; Magnetic fields; Space charge; Voltage;
Conference_Titel :
Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-0135-8
DOI :
10.1109/PAC.1991.164273
