Title :
3D self magnetic field calculation in the finite element gun code MICHELLE
Author :
Nelson, Eric M. ; Petillo, John J. ; Levush, Baruch
Author_Institution :
Los Alamos Nat. Lab., NM, USA
Abstract :
The finite element gun code MICHELLE currently computes axisymmetric self magnetic fields in both 2D and 3D models. However, self-consistent full 3D self magnetic fields are desired for devices with relativistic beams or a 3D geometry, the latter including multiple beam guns and sheet beam guns. We report on our investigation of one scheme for the full 3D self magnetic field calculation in MICHELLE, finding that the scheme will work well and that the novel unstructured grid particle tracker, successfully employed for over two years now, is ideal for self magnetic field computation. We will also report on progress implementing this scheme.
Keywords :
computational electromagnetics; conjugate gradient methods; electron guns; finite element analysis; magnetic fields; 3D self magnetic field calculation; MICHELLE code; axisymmetric self magnetic fields; computational efficiency; conjugate gradient method; curl-curl formulation; finite element gun code; magnetic vector potential; multiple beam guns; relativistic beams; sheet beam guns; unstructured grid particle tracker; Character generation; Equations; Finite element methods; Grid computing; Guns; Magnetic fields; Magnetostatics; Particle tracking; Polynomials; Vectors;
Conference_Titel :
Vacuum Electronics Conference, 2004. IVEC 2004. Fifth IEEE International
Print_ISBN :
0-7803-8261-7
DOI :
10.1109/IVELEC.2004.1316237
