Title :
Hot test of gyrotron cavity interaction using a 3D CFDTD PIC method
Author :
Lin, M.C. ; Smithe, David N. ; Guss, William C. ; Temkin, Richard J.
Author_Institution :
Tech-X Corp., Boulder, CO, USA
Abstract :
Summary form only given. Modeling a gyrotron cavity interaction in 3D and time-domain is very challenging due to the open-end features of cavity structure and higher-order mode excitation employed to achieve high efficiency. In this work, a 3D conformal finite-difference time-domain (CFDTD) particle-in-cell (PIC) method has been developed to perform a hot test of gyrotron cavity interaction. With a tailored gyrobeam emission, not only forward wave but also backward wave interactions have been observed in an MIT gyrotron cavity, consistent with a recent experiment at MIT. Our preliminary results show that the 3D CFDTD PIC method could provide an alternative modeling tool for studying the gyrotron cavity interaction for further improving efficiency and studying mode competition.
Keywords :
finite difference time-domain analysis; gyrotrons; 3D CFDTD PIC method; 3D conformal finite-difference time-domain method; MIT gyrotron cavity; backward wave interactions; cavity structure; gyrotron cavity interaction; higher-order mode excitation; hot test; mode competition; open end features; particle-in-cell method; tailored gyrobeam emission; Cavity resonators; Finite difference methods; Gyrotrons; Plasmas; Solid modeling; Three-dimensional displays; Time-domain analysis;
Conference_Titel :
Plasma Sciences (ICOPS) held with 2014 IEEE International Conference on High-Power Particle Beams (BEAMS), 2014 IEEE 41st International Conference on
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4799-2711-1
DOI :
10.1109/PLASMA.2014.7012684
