Zobrazeno 1 - 10
of 38
pro vyhledávání: '"W. B. Herrmannsfeldt"'
Publikováno v:
IEEE Transactions on Plasma Science. 39:3337-3344
A 300-kW 670-GHz gyrotron, operating with a pulsed coil at the fundamental cyclotron harmonic, is designed at the University of Maryland for an application of detecting concealed radioactive materials. The design of a low-spread diode-type magnetron
Autor:
W B Herrmannsfeldt
Publikováno v:
Physica Scripta. :28-33
This paper will discuss the developments in the electron gun simulation programs that are based on EGUN and its derivatives and supporting programs. Much of the code development has been inspired by technology changes in computer hardware; the implic
Autor:
W. B. Herrmannsfeldt
Publikováno v:
Journal of Fusion Energy. 17:99-101
In following the theme of this Symposium, “Plasma Science and Its Applications,” we may be suggesting to some readers that the “other” applications of Plasma Science somehow justify the existence of a field traditionally devoted to fusion ene
Publikováno v:
Proceedings of the 1989 IEEE Particle Accelerator Conference, . 'Accelerator Science and Technology.
The RMS emittances calculated for beam distributions using computer simulations are frequently dominated by higher-order aberrations. The possibility of defining higher-order correlations that can be removed from the distribution to result in a lower
Autor:
A.D. Yeremian, C.M. Spencer, W. B. Herrmannsfeldt, Roger H. Miller, R. A. Early, D.C. Schultz, K. R. Eppley, T.L. Lavine
Publikováno v:
Conference Record of the 1991 IEEE Particle Accelerator Conference.
A description is presented of the design of the beam-line from the polarized electron gun to the linac injector in the Stanford Linear Collider (SLC). The polarized electron source is a GaAs photocathode, requiring 10/sup -11/-torr-range pressure for
Autor:
W. B. Herrmannsfeldt, R. Becker
Publikováno v:
Review of Scientific Instruments. 63:2756-2758
igun is a program for the simulation of positive ion extraction from plasmas. It is based on the well known program egun for the calculation of electron and ion trajectories in electron guns and lenses. The mathematical treatment of the plasma sheath
Publikováno v:
AIP Conference Proceedings.
Computer modeling has become an integral part of the design and analysis of accelerator structures and RF components. Sophisticated 3D codes, powerful workstations, and timely theory support all contributed to this development. We will describe our m
Autor:
W. B. Herrmannsfeldt, Yiton T. Yan
Publikováno v:
AIP Conference Proceedings.
The rapid growth in the power of large-scale computers has had a revolutionary effect on the study of charged-particle accelerators that is similar to the impact of smaller computers on everyday life. Before an accelerator is built, it is now the abs
Autor:
R. Becker, W. B. Herrmannsfeldt
Publikováno v:
Review of Scientific Instruments. 77:03B907
Today it is generally accepted in the ion source and accelerator communities to communicate emittance data with units of π mm mrad or π cm mrad . The emittance of a beam with 2 cm diameter or width and an opening angle of 200 mrad then is written a