DocumentCode :
1460556
Title :
Design and Analysis of a High-Power Electron Beam Source 
Confined in a Highly Uniform Magnetic Field Region
Author :
Masood, Khalid ; Zafar, Junaid ; Zafar, Haroon
Author_Institution :
Inst. of Nucl. Med. & Oncology, Lahore, Pakistan
Volume :
40
Issue :
4
fYear :
2012
fDate :
4/1/2012 12:00:00 AM
Firstpage :
1064
Lastpage :
1069
Abstract :
A directly heated line source emitter with beam power (>; 50 KW/cm2) is developed. The emitter assembly design parameters and beam characteristics are analyzed using a highly uniform magnetically confined region. Circular cross-sectional tungsten cathodes of diameters 0.9 mm and 1.5 mm were used, and their results are compared. The developed emitter configuration ensures low angular divergence, millisecond evaporation time for large samples, operational reproducibility, and beam stability. The emitter source has been tested by experimentally developing extremely homogeneous magnetic field in large cylindrical region of more than one-half of the coil´s diameter.
Keywords :
cathodes; electron beams; plasma heating; plasma instability; plasma sources; plasma transport processes; tungsten; W; beam stability analysis; circular cross-sectional tungsten cathodes; coil diameter; directly heated line source emitter; electron beam characteristics; high emission current densities; high uniform magnetic field region; high uniform magnetically confined region; high-power electron beam source analysis; high-power electron beam source design; homogeneous magnetic field; large cylindrical region; low angular divergence analysis; millisecond evaporation time; size 0.9 mm; size 1.5 mm; Acceleration; Cathodes; Coils; Current density; Electron beams; Heating; Plasma temperature; Balancing parameters; beam power; emission current; magnetic confinement;
fLanguage :
English
Journal_Title :
Plasma Science, IEEE Transactions on
Publisher :
ieee
ISSN :
0093-3813
Type :
jour
DOI :
10.1109/TPS.2012.2185954
Filename :
6161661
Link To Document :
