Voltage distribution in tapered winding of Tesla-transformer during discharge process of PFL
The operation principle of integral construction of Tesla transformer and PFL was investigated in Tesla-transformer-type accelerator.Experiment was carried out on Tesla transformer's secondary winding to study the impulse voltage distribution while PFL was discharging.The regularities of turn-ground voltage distribution and interturn voltage distribution were summarized.Voltage distribution within PFL was calculated and it was compared with the experimental result.Structural winding of parallel coils in the head,parallel coils in the end and shading ring were used to improve voltage distribution and that was testified by experiment.The results indicate that taper winding doesn't effect electric field within PFL,the turn-ground voltage appears linearly,the interturn voltage fluctuates seriously and it is the biggest in head of winding.The three optimized methods help to depress oscillation,the structural winding of parallel coils in the head decreases the interturn voltage in head of winding remarkably and the parallel coils in the end decrease the interturn voltage in the end.