NDLI: Green's Function Simulation of Space–Charge Effects in Electron Beams

Content Provider	IEEE Xplore Digital Library
Author	Carlsten, B.E. Haynes, W.B. Roybal, W.T. Tallerico, P.J.
Copyright Year	1973
Abstract	In this paper, a new numerical model for space-charge forces in electron beams based on a Green's function approach is described. In this model, the beam is simulated by a series of rings with nonzero thickness and length. The space-charge force on a ring is found by summing over all the interactions with all the other rings, where each interaction force is integrated over the entire volume of each source rings. With proper beam initialization of the simulation parameters, the rings can perfectly form the electron beam, leading to a very smooth and accurate calculation of the space-charge fields. The space-charge fields calculated this way can be more accurate than those found with particle-in-cell (PIC) calculations. The fields can also be distributed onto a mesh, as in a PIC calculation, leading to equivalent accuracy with greatly reduced simulation times. The accuracy of this type of model is demonstrated by comparing the harmonic-current evolution from an RF gap for a transversely cold confined beam to analytic theory and we show its utility with a large-signal annular beam klystron simulation using this technique
Sponsorship	IEEE Nuclear and Plasma Sciences Society
Starting Page	2404
Ending Page	2413
Page Count	10
File Size	502276
File Format	PDF
ISSN	00933813
Volume Number	34
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Green's function methods Electron beams Particle beams Computational modeling Numerical models Radio frequency Harmonic analysis Klystrons Electron tubes Analytical models traveling-wave tubes Beams electron beams electron tubes klystrons microwave amplifiers
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Condensed Matter Physics

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
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