Open AccessStudy of multipactor effect with applications to superconductive radiofrequency cavities
Author(s) -
D Marija Radmilovic-Radjenovic,
P. Beličev,
M Branislav Radjenovic
Publication year - 2017
Publication title -
nuclear technology and radiation protection
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.31
H-Index - 16
eISSN - 1452-8185
pISSN - 1451-3994
DOI - 10.2298/ntrp1702115r
Subject(s) - secondary emission , secondary electrons , monte carlo method , electron , scaling , yield (engineering) , atomic physics , materials science , computational physics , physics , nuclear physics , composite material , statistics , geometry , mathematics
In this paper a one-dimensional Particle-in-Cell/Monte Carlo collision code has been used in order to study characteristics of multipactors. For multipactor to occur each electron striking the surface must generate more than one secondary on average. The ratio of primary to secondary electrons is given by the secondary emission yield. For this study, calculations were carried out by using Sternglass model that includes energy dependence of the secondary emission yield. The obtained simulation results for the pressure dependence of the breakdown time follow the scaling law. Number of electrons increases in time, while their mean energy decreases. Since secondary electron emission at the cavity surface plays an important role, simulation results, presented here, can help cavity designers predict multipacting issues before fabrication. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. O171037 and Grant no. III45006