Compact, maintainable 80-KeV neutral beam module
Abstract
A compact, maintainable 80-keV arc chamber, extractor module for a neutral beam system immersed in a vacuum of <10.sup.-2 Torr, incorporating a nested 60-keV gradient shield located midway between the high voltage ion source and surrounding grounded frame. The shield reduces breakdown or arcing path length without increasing the voltage gradient, tends to keep electric fields normal to conducting surfaces rather than skewed and reduces the peak electric field around irregularities on the 80-keV electrodes. The arc chamber or ion source is mounted separately from the extractor or ion accelerator to reduce misalignment of the accelerator and to permit separate maintenance to be performed on these systems. The separate mounting of the ion source provides for maintaining same without removing the ion accelerator.
- Inventors:
-
- Livermore, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 863711
- Patent Number(s):
- 4232244
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05H - PLASMA TECHNIQUE
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- compact; maintainable; 80-kev; neutral; beam; module; chamber; extractor; immersed; vacuum; 10; -2; torr; incorporating; nested; 60-kev; gradient; shield; located; midway; voltage; source; surrounding; grounded; frame; reduces; breakdown; arcing; path; length; increasing; tends; electric; fields; normal; conducting; surfaces; skewed; peak; field; irregularities; electrodes; mounted; separately; accelerator; reduce; misalignment; permit; separate; maintenance; performed; systems; mounting; provides; maintaining; removing; source provides; path length; electric field; neutral beam; electric fields; surrounding grounded; voltage gradient; shield located; conducting surfaces; surrounding ground; /313/376/
Citation Formats
Fink, Joel H, and Molvik, Arthur W. Compact, maintainable 80-KeV neutral beam module. United States: N. p., 1980.
Web.
Fink, Joel H, & Molvik, Arthur W. Compact, maintainable 80-KeV neutral beam module. United States.
Fink, Joel H, and Molvik, Arthur W. Tue .
"Compact, maintainable 80-KeV neutral beam module". United States. https://www.osti.gov/servlets/purl/863711.
@article{osti_863711,
title = {Compact, maintainable 80-KeV neutral beam module},
author = {Fink, Joel H and Molvik, Arthur W},
abstractNote = {A compact, maintainable 80-keV arc chamber, extractor module for a neutral beam system immersed in a vacuum of <10.sup.-2 Torr, incorporating a nested 60-keV gradient shield located midway between the high voltage ion source and surrounding grounded frame. The shield reduces breakdown or arcing path length without increasing the voltage gradient, tends to keep electric fields normal to conducting surfaces rather than skewed and reduces the peak electric field around irregularities on the 80-keV electrodes. The arc chamber or ion source is mounted separately from the extractor or ion accelerator to reduce misalignment of the accelerator and to permit separate maintenance to be performed on these systems. The separate mounting of the ion source provides for maintaining same without removing the ion accelerator.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1980},
month = {Tue Jan 01 00:00:00 EST 1980}
}