Email RIS file
Bookmark
Report an Issue

Quantitative Experiments With Electrons in a Positively Charged Beam [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 2006.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
PDF-file: 34 pages; size: 1.1 Mbytes
Additional Creators
Lawrence Berkeley National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
Access Online

Availability

I Want It
I Want It

Finding items...

Restrictions on Access
Free-to-read Unrestricted online access
Summary
Intense ion beams are an extreme example of, and difficult to maintain as, a non-neutral plasma. Experiments and simulations are used to study the complex interactions between beam ions and (unwanted) electrons. Such ''electron clouds'' limit the performance of many accelerators. To characterize electron clouds, a number of parameters are measured including: total and local electron production and loss for each of three major sources, beam potential versus time, electron line-charge density, and gas pressure within the beam. Electron control methods include surface treatments to reduce electron and gas emission, and techniques to remove, or block, electrons from the beam. Detailed, self-consistent simulations include beam-transport fields, and electron and gas generation and consistent transport, to compute unexpectedly rich behavior, much of which is confirmed experimentally. For example, in a quadrupole magnetic field, ion and dense electron plasmas interact to produce multi-kV oscillations in the electron plasma and distortions of the beam velocity space distribution, without becoming homogenous or locally neutral.
Report Numbers
E 1.99:ucrl-jrnl-225704
ucrl-jrnl-225704
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
10/27/2006.
"ucrl-jrnl-225704"
Physics of Plasmas, vol. 14, N/A, May 1, 2007, pp. 056701 14 ISSN 1070-664X; PHPAEN FT
Friedman, A; Cohen, R; Sharp, W; Molvik, A W; Lund, S M; Vay, J; Seidl, P; Bieniosek, F; Baca, D; Covo, M K; Leister, C.
Funding Information
W-7405-ENG-48
View MARC record | catkey: 14740010