Title :
High brightness electron beam injector for the DARHT facility
Author :
Henestroza, E. ; Eylon, S. ; Anderson, D. ; Fawley, W. ; Rutkowski, H. ; Yu, S.
Author_Institution :
Lawrence Berkeley Lab., CA, USA
fDate :
6/20/1905 12:00:00 AM
Abstract :
An injector for the second axis of the Dual-Axis Radiographic Hydrotest Facility (DARHT) is been built at LBNL. The proposed injector consists of a single gap diode extracting 4 kAmps, 3 MV electrons from a thermionic dispenser cathode and powered through a high voltage ceramic insulator column by a Marx generator. The key issues in the design are the control of beam quality to meet the DARHT 2nd axis final focus requirements and to minimize high-voltage breakdown risks. We present the conceptual design of the injector as well as preliminary results on a scaled experiment and breakdown tests in vacuum using the Berkeley RTA facility
Keywords :
electron accelerators; electron sources; linear accelerators; particle beam dynamics; particle beam injection; pulsed power supplies; thermionic cathodes; thermionic electron emission; 3 MV; 4 kA; DARHT facility; Dual-Axis Radiographic Hydrotest Facility; Marx generator; high brightness electron beam injector; high voltage ceramic insulator column; high-voltage breakdown risks; single gap diode; thermionic dispenser cathode; Brightness; Cathodes; Ceramics; Diodes; Electron beams; Insulation; Power generation; Radiography; Vacuum breakdown; Voltage;
Conference_Titel :
High-Power Particle Beams, 1998. BEAMS '98. Proceedings of the 12th International Conference on
Conference_Location :
Haifa
Print_ISBN :
0-7803-4287-9
DOI :
10.1109/BEAMS.1998.822459
