Publication Type:

Conference Paper


2016 IEEE Asia-Pacific Conference on Applied Electromagnetics, APACE 2016, Institute of Electrical and Electronics Engineers Inc., p.68-72 (2017)





Cavity resonators, Chemical elements, Conformal coatings, Deposition, Electric quadrupoles, Electromagnetic fields, Fundamental principles, Heavy ions, High current beams, Inertial confinement fusion, Ion beams, Parallel propagation, Performance metrics, Radio frequency cavity, Superconductivity, Thin films, Thin-film depositions


Uniform thin layers of heavy elements such as niobium (Nb) have been found to possess superior superconductivity characteristics in applications like radio frequency cavity resonators. The experimental process to realize conformal coating with reproducible characteristics especially on non-planar, cavity resonators rests on the generation of high-current beam of Nb ions. Here, the fundamental principles that govern the motion of such ions in an electromagnetic (e-m) field are investigated. An electric quadrupole is designed via modelling so as to generate desired e-m fields that support parallel propagation as well as confinement of the Nb ions to a desired beam size and shape in ultrahigh vacuum (UHV) conditions. The simulation study presented here considers the case of Nb ions whose currents are of the order of 5 A, that traverse a length of 130 cm and have a cross-section radius of 3.75 cm. The trajectories for Nb ions are simulated, and the effect of external fields on the trajectory of ions is evaluated using appropriate performance metrics. © 2016 IEEE.


cited By 0; Conference of 7th IEEE Asia-Pacific Conference on Applied Electromagnetics, APACE 2016 ; Conference Date: 11 December 2016 Through 13 December 2016; Conference Code:127632

Cite this Research Publication

Dr. T. Rajagopalan and Dr. Shanmugha Sundaram G. A., “Electromagnetic fields for propagation and confinement of high current heavy ion beam towards conformal thin film deposition”, in 2016 IEEE Asia-Pacific Conference on Applied Electromagnetics, APACE 2016, 2017, pp. 68-72.