Two and one-half dimension particle-in-cell simulation of high-power klystrons

Conference · Tue Oct 01 04:00:00 EDT 1985 · IEEE Trans. Nucl. Sci.; (United States)

OSTI ID:6297759

Yu, S S; Drobot, A; Wilson, P

A technique for modeling high-power klystrons with the fully electromagnetic particle-in-cell code MASK is reported. The interesting operating parameters (efficiency, gain, etc.) are associated with a highly resonant steady state. To reach steady state within a reasonable computing time, it is necessary to reduce the time needed for the transient filling of resonant structures. The technique introduced replaces resonant cavities with rf voltages across corresponding ''ports'' in the beam tube. The voltage and phase of each port can be rigorously determined from power balance between work done on the beam, wall losses, and any external input or output. Given a set of cavity parameters ( 0, R/Q, Q0), power balance gives implicit relations for the voltage and phase. As an example, we show a simulation of the 5-cavity 35 MW SLAC klystron in which the computed efficiency is in good agreement with the experiment.

• Research Organization: Stanford Linear Accelerator Center
• OSTI ID: 6297759
• Report Number(s): CONF-850504-
• Conference Information: Journal Name: IEEE Trans. Nucl. Sci.; (United States) Journal Volume: NS-32:5
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430303* -- Particle Accelerators-- Experimental Facilities & Equipment
AMPLIFICATION
AMPLIFIERS
CAVITY RESONATORS
COMPUTER CODES
COMPUTERIZED SIMULATION
EFFICIENCY
ELECTRIC POTENTIAL
ELECTRON TUBES
ELECTRONIC EQUIPMENT
EQUIPMENT
GAIN
KLYSTRONS
M CODES
MICROWAVE EQUIPMENT
MICROWAVE TUBES
NATIONAL ORGANIZATIONS
POWER AMPLIFIERS
POWER RANGE 10-100 MW
RESONATORS
RF SYSTEMS
SIMULATION
STANFORD LINEAR ACCELERATOR CENTER
STEADY-STATE CONDITIONS
US DOE
US ERDA
US ORGANIZATIONS