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Engineering of beam direct conversion for a 120-kV, 1-MW ion beamPractical systems for beam direct conversion are required to recover the energy from ion beams at high efficiency and at very high beam power densities in the environment of a high-power neutral-injection system. Such an experiment is now in progress using a 120-kV beam with a maximum total current of 20 A. After neutralization, the H(+) component to be recovered will have a power of approximately 1 MW. A system testing these concepts has been designed and tested at 15 kV, 2 kW in preparation for the full-power tests. The engineering problems involved in the full-power tests affect electron suppression, gas pumping, voltage holding, diagnostics, and measurement conditions. Planning for future experiments at higher power includes the use of cryopumping and electron suppression by a magnetic field rather than by an electrostatic field. Beam direct conversion for large fusion experiments and reactors will save millions of dollars in the cost of power supplies and electricity and will dispose of the charged beam under conditions that may not be possible by other techniques.
Document ID
19780055925
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Barr, W. L.
(NASA Lewis Research Center Cleveland, OH, United States)
Doggett, J. N.
(NASA Lewis Research Center Cleveland, OH, United States)
Hamilton, G. W.
(NASA Lewis Research Center Cleveland, OH, United States)
Kinney, J. D.
(NASA Lewis Research Center Cleveland, OH, United States)
Moir, R. W.
(California, University Livermore, Calif., United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1977
Subject Category
Plasma Physics
Meeting Information
Meeting: Symposium on Engineering Problems of Fusion Research
Location: Knoxville, TN
Start Date: October 25, 1977
End Date: October 28, 1977
Accession Number
78A39834
Funding Number(s)
CONTRACT_GRANT: W-7405-ENG-48
Distribution Limits
Public
Copyright
Other

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