SAP2014 - List of Authors (Ji, B.)

Paper	Title	Page
WEPH26	Applying the None-stationary Theory to the Multipacting Analysis of a Cyclotron RF Cavity	74
	C. Wang, B. Ji, Z.G. Yin, T.J. Zhang, Z.L. Zhao CIAE, Beijing, People's Republic of China
	The most of the available multipacting theories are based on assumptions on the emission velocities of secondary electrons and restrict the electron-surface impact pattern to double surface impacts. And these theories can only predict the multipacting conditions in the form of Hatch diagram, which is a formularization of RF voltage vs. frequency multiplied by gap distance, and have very little information on the dynamics of multipacting processes. However, the None-stationary multipacting theory introduced by S. Anza *, uses more physical statistic way to dealing with the emission velocities of secondary electrons and have no restrict on the electron-surface impact pattern. In this paper we first extend the None-stationary multipacting theory. And then, we have made a careful analysis on the dynamics of a multipacting process observed during RF conditioning of a cyclotron, by using the none-stationary theory. This analysis gives us an inspiration to both figure out the problem and develop a cure to it.

Paper

Title

Page

Applying the None-stationary Theory to the Multipacting Analysis of a Cyclotron RF Cavity

74

C. Wang, B. Ji, Z.G. Yin, T.J. Zhang, Z.L. Zhao
CIAE, Beijing, People's Republic of China

The most of the available multipacting theories are based on assumptions on the emission velocities of secondary electrons and restrict the electron-surface impact pattern to double surface impacts. And these theories can only predict the multipacting conditions in the form of Hatch diagram, which is a formularization of RF voltage vs. frequency multiplied by gap distance, and have very little information on the dynamics of multipacting processes. However, the None-stationary multipacting theory introduced by S. Anza *, uses more physical statistic way to dealing with the emission velocities of secondary electrons and have no restrict on the electron-surface impact pattern. In this paper we first extend the None-stationary multipacting theory. And then, we have made a careful analysis on the dynamics of a multipacting process observed during RF conditioning of a cyclotron, by using the none-stationary theory. This analysis gives us an inspiration to both figure out the problem and develop a cure to it.