DocumentCode
2170559
Title
Measures to alleviate the back bombardment effect of thermionic RF electron gun
Author
Huang, Yi-Pai ; Xie, J.
Author_Institution
Inst. of High Energy Phys., Beijing, China
fYear
1991
fDate
6-9 May 1991
Firstpage
2017
Abstract
The thermionic RF electron gun finds application as a high-brightness electron source for RF linacs. However, cathode heating from the back-bombardment effect (BBE) causes a ramp in the macropulse beam current and limits the usable pulse width. Three methods for alleviating the BEE, ring cathode, magnetic deflection, and laser-assisted heating, were studied theoretically and experimentally. The results of these studies are reported.<>
Keywords
electron guns; electron sources; RF linacs; back-bombardment effect; cathode heating; high-brightness electron source; laser-assisted heating; macropulse beam current; magnetic deflection; pulse width; ring cathode; thermionic RF electron; Apertures; Cathodes; Costs; Electron beams; Electron emission; Heating; Magnetic field measurement; Radio frequency; Ring lasers; Temperature;
fLanguage
English
Publisher
ieee
Conference_Titel
Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE
Conference_Location
San Francisco, CA, USA
Print_ISBN
0-7803-0135-8
Type
conf
DOI
10.1109/PAC.1991.164855
Filename
164855
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