skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Compact 80-keV neutral-beam module

Abstract

A compact and maintainable source of 80-keV neutral beams that focus to a high power density is required for the Mirror Fusion Test Facility (MFTF). In the new source being designed and built to meet these requirements, the cross-sectional area is reduced in two ways: by immersing the source in a vacuum where high voltage can be held over smaller distances and by redesigning grid supporting structures. Reliability is increased by reducing the electric fields everywhere else below those present between grids and by design innovations. The latter include techniques to reduce stray magnetic field and disperse gas uniformly, all metal-ceramic construction, and a 60-kV shield enclosing all 80-kV electrodes. Wherever possible, we have attempted to simplify the construction. We expect to solve problems that arise during testing either with add-on fixes or with the techniques already tested successfully on the Lawrence Berkeley Laboratory (LBL) 120-keV source. Easy maintenance is obtained by a compact isolation valve and by modular construction. Curving both the grid wires and their holders provides focusing in two planes.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
California Univ., Livermore (USA). Lawrence Livermore Lab.
OSTI Identifier:
5206972
Report Number(s):
UCRL-79682; CONF-771029-128
TRN: 78-005041
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: 7. symposium on fusion research project, Knoxville, TN, USA, 25 Oct 1977
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; MFTF DEVICES; NEUTRAL BEAM SOURCES; SPECIFICATIONS; BEAM EXTRACTION; DESIGN; MAINTENANCE; MAGNETIC MIRRORS; OPEN PLASMA DEVICES; THERMONUCLEAR DEVICES; 700205* - Fusion Power Plant Technology- Fuel, Heating, & Injection Systems

Citation Formats

Molvik, A W, Baird, E D, Berkner, K H, Cooper, W S, Duffy, T J, Ehlers, K W, Fink, J, Garner, D, and Wilder, C. Compact 80-keV neutral-beam module. United States: N. p., 1977. Web.
Molvik, A W, Baird, E D, Berkner, K H, Cooper, W S, Duffy, T J, Ehlers, K W, Fink, J, Garner, D, & Wilder, C. Compact 80-keV neutral-beam module. United States.
Molvik, A W, Baird, E D, Berkner, K H, Cooper, W S, Duffy, T J, Ehlers, K W, Fink, J, Garner, D, and Wilder, C. Thu . "Compact 80-keV neutral-beam module". United States. https://www.osti.gov/servlets/purl/5206972.
@article{osti_5206972,
title = {Compact 80-keV neutral-beam module},
author = {Molvik, A W and Baird, E D and Berkner, K H and Cooper, W S and Duffy, T J and Ehlers, K W and Fink, J and Garner, D and Wilder, C},
abstractNote = {A compact and maintainable source of 80-keV neutral beams that focus to a high power density is required for the Mirror Fusion Test Facility (MFTF). In the new source being designed and built to meet these requirements, the cross-sectional area is reduced in two ways: by immersing the source in a vacuum where high voltage can be held over smaller distances and by redesigning grid supporting structures. Reliability is increased by reducing the electric fields everywhere else below those present between grids and by design innovations. The latter include techniques to reduce stray magnetic field and disperse gas uniformly, all metal-ceramic construction, and a 60-kV shield enclosing all 80-kV electrodes. Wherever possible, we have attempted to simplify the construction. We expect to solve problems that arise during testing either with add-on fixes or with the techniques already tested successfully on the Lawrence Berkeley Laboratory (LBL) 120-keV source. Easy maintenance is obtained by a compact isolation valve and by modular construction. Curving both the grid wires and their holders provides focusing in two planes.},
doi = {},
url = {https://www.osti.gov/biblio/5206972}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1977},
month = {9}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: