COMPARISONBETWEEN EXPERIMENTALANDNUMERICALSTUDIES OFA REFLEXTRIODE

component 2.55 m fromtheoutput ofthewaveguide inside theanechoic chamber [3]. Thispaperpresents acomparison ofexperimental and A modeloftheMarxsystem, reflex triode, waveguide simulated results ofareflex triode driven byacompactandpart oftheanechoic chamber iscreated inMAGIC Marxsystem. Theexperimental setup consists ofaMarx [4]. Fromthis modelitispossible tosimulate thecurrent, systemandareflex triode together withashort outputvoltage andmagnetic fieldcomponent inorderto waveguide. A parametric study hasbeenperformed. The comparethesesimulated results withtheexperimental diagnostics used includecurrentand voltageones. Ifclose agreements arefounditmaybepossible to measurements andmeasurement ofthemagnetic fieldpredict suchparameters asgenerated microwave power, component ofthemicrowave pulses using aB-dot probe. microwave energyandelectromagnetic fields inthe The 3-dimensional particle-in-cell simulation code experiments. A future step istousethis modeltooptimize MAGICisusedtonumerically study thesystem described thegeometry ofa reflex triode driven bya compact above. A IDmodeloftheMarxsystem hasbeendesignedpulsed powersupply inordertoachieve highenergy andthis isconnected toa3Dmodelofthereflex triode.efficiency. Alsoincluded inthis modelistheoutput waveguide and part oftheanechoic chamber usedintheexperiments. The simulated current, voltage andmicrowave radiation are II. EXPERIMENTAL SETUPAND compared totheexperimental results andclose qualitative