Title :
Phase characterization of gyrotron beams using the moment method
Author :
Anderson, J.P. ; Shapiro, M.A. ; Temkin, R.J. ; Denison, D.R.
Author_Institution :
Plasma Fusion Center, MIT, Cambridge, MA, USA
Abstract :
We present the formulation and results of the moment method applied to the determination of phase profiles of gyrotron microwave beams from known amplitudes. While traditional approaches to this problem employ an iterative error reduction algorithm, the moment method calculates a polynomial phasefront based on weighted moments of intensity measurements. The method is illustrated by the successful application to a 1 MW gyrotron beam.
Keywords :
gyrotrons; method of moments; millimetre wave generation; millimetre wave tubes; 1 MW; 110 GHz; gyrotron beams; intensity measurements; moment method; phase characterization; phase profiles; polynomial phasefront; weighted moments; Character generation; Gyrotrons; Iterative methods; Microwave generation; Moment methods; Nuclear and plasma sciences; Particle beams; Phase measurement; Polynomials; Testing;
Conference_Titel :
Infrared and Millimeter Waves, 2000. Conference Digest. 2000 25th International Conference on
Conference_Location :
Beijing, China
Print_ISBN :
0-7803-6513-5
DOI :
10.1109/ICIMW.2000.893047
