Zobrazeno 1 - 10
of 35
pro vyhledávání: '"J.F. DeFord"'
Publikováno v:
IEEE Transactions on Electron Devices. 52:742-748
Recent developments to the MICHELLE electron gun and collector design tool are reported in this paper. The MICHELLE code is a new finite-element (FE) two-dimensional and three-dimensional electrostatic particle-in-cell code that has been designed to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12abdab91337dccf6276f693f59dbd96
https://doi.org/10.1109/ted.2005.845800
https://doi.org/10.1109/ted.2005.845800
Autor:
J.F. DeFord, B. Held
Publikováno v:
Proceedings of the 2003 Bipolar/BiCMOS Circuits and Technology Meeting (IEEE Cat. No.03CH37440).
This paper details the development of periodic boundary condition support in the parallel finite-element eigensolver OM3P. OM3P is based on the inexact Lanczos/JOCC hybrid method, and it uses the vectorscalar (A-V) basis set that has previously been
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d3b51b64a4b4a975fb530fbac4e0d38
https://doi.org/10.1109/pac.2003.1289979
https://doi.org/10.1109/pac.2003.1289979
Publikováno v:
Proceedings of the 1989 IEEE Particle Accelerator Conference, . 'Accelerator Science and Technology.
Beam breakup (BBU) in the drive beam of a two-beam accelerator (TBA) using transverse wakes calculated by the AMOS code was studied numerically. Only cumulative BBU due to the wake of the linear induction accelerator cavities is considered. Growth le
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59f214a9e1cebf092a9171f923237939
https://doi.org/10.1109/pac.1989.73391
https://doi.org/10.1109/pac.1989.73391
Publikováno v:
Proceedings of the 1989 IEEE Particle Accelerator Conference, . 'Accelerator Science and Technology.
AMOS, a newly developed computer code that is finding application in the design of accelerator cavities, is described. The program simulates the temporal evolution of electromagnetic fields in rotationally symmetric structures. An explicit Fourier se
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11a75f5088f60b6137ea407362a11723
https://doi.org/10.1109/pac.1989.73388
https://doi.org/10.1109/pac.1989.73388
Publikováno v:
Proceedings of the 1989 IEEE Particle Accelerator Conference, . 'Accelerator Science and Technology.
It is shown that the Landau-Lifshitz-Gilbert equation can be used in conjunction with Maxwell's equations to model the magnetization reversal process in those situations in which the nonmagnetic interactions in the material are negligible. It is seen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c4cd050bd32ed6ac96807e05913c46e7
https://doi.org/10.1109/pac.1989.73389
https://doi.org/10.1109/pac.1989.73389
Publikováno v:
Wescon/96.
Behavior of signals in circuit boards can be predicted using three dimensional electromagnetic finite element analysis. For intermediate frequencies and clock rates, capacitance and inductance matrices can be computed by 3-D finite elements and used
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da656614e2c77cdd0c5c0f62585a91cf
https://doi.org/10.1109/wescon.1996.554010
https://doi.org/10.1109/wescon.1996.554010
Publikováno v:
Conference Record of the 1991 IEEE Particle Accelerator Conference.
A nonlinear magnetization model has been installed in the 2-1/2-D finite-difference electromagnetic code AMOS. A procedure has been developed for mapping the 3D induction cells on the 2D AMOS mesh. These tools will be important for modeling advanced
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::37f05d08f3bab84624bee98ceb88128e
https://doi.org/10.1109/pac.1991.165196
https://doi.org/10.1109/pac.1991.165196
Autor:
P. Saladin, J.F. DeFord
Publikováno v:
Proceedings of 1995 IEEE MTT-S International Microwave Symposium.
Hexahedral H/sub 0/-curl edge elements provide the means for highly accurate solutions to the Maxwell equations in the high frequency regime. First order hexahedral elements have proven quite accurate for waveguide component modeling, requiring only
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7b1b3afe8bcb78d42fb29c94a396500
https://doi.org/10.1109/mwsym.1995.406188
https://doi.org/10.1109/mwsym.1995.406188
Autor:
S.J. Wineman, M.A. Christon, D.K. Lewis, T.R. Donich, J.D. Foch, J.F. DeFord, J. Jones-Olivera, S.E. Bumpas, D.J. Steich, C.S. Landrum, G.L. Goudreau, K.S. Kunz
Publikováno v:
Proceedings of IEEE Ultrasonics Symposium ULTSYM-94.
Two recent elastodynamic computations projects at Lawrence Livermore National Laboratory are developing finite difference time domain and finite element time domain computer modeling codes. This new capability can be applied to ultrasonic problems in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a161a31c3d8d42dcfacbcbd4147d612
https://doi.org/10.1109/ultsym.1994.401748
https://doi.org/10.1109/ultsym.1994.401748
Autor:
J.F. DeFord
The Computational Electronics and Electromagnetics thrust area is a focal point for computer modeling activities in electronics and electromagnetics in the Electronics Engineering Department of Lawrence Livermore National Laboratory (LLNL). Tradition
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94ae08cfe48345740cc1fbf4adccb08e
https://doi.org/10.2172/10194486
https://doi.org/10.2172/10194486
