Title :
Terahertz beamstick performance diagnostics using MICHELLE
Author :
Nguyen, Khanh ; Wright, Edward ; Calame, Jeffrey ; Levush, Baruch ; Pasour, John ; Dobbs, Richard ; Berry, Dave ; Chernin, David ; Petillo, John
Author_Institution :
Beam-Wave Res., Inc., Bethesda, MD, USA
Abstract :
Data from experimental testing of a beamstick designed and built for a 670 GHz extended interaction klystron are compared against 2D and 3D beam optics simulations using the MICHELLE code. A methodology is presented to establish the “as-built” geometry from these comparisons. Excellent agreement with experimental beam current and transmission data is observed across a wide range of electrode voltages. The depressed collector achieved 99% energy recovery as designed.
Keywords :
electrodes; geometry; klystrons; submillimetre wave tubes; terahertz wave devices; testing; 2D beam optics simulation; 3D beam optics simulation; MICHELLE code; depressed collector; electrode voltage; energy recovery; experimental beam current; experimental testing; extended interaction klystron; frequency 670 GHz; geometry; terahertz beamstick performance diagnostic; transmission data; Cathodes; Current measurement; Geometry; Optical beams; Optics; Voltage measurement; MICHELLE; as-built; beamstick; extended-interaction klystron; simulation;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2012 IEEE Thirteenth International
Conference_Location :
Monterey, CA
Print_ISBN :
978-1-4673-0188-6
Electronic_ISBN :
978-1-4673-0187-9
DOI :
10.1109/IVEC.2012.6262065
