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Wide flat high-voltage long- pulse forming technology research

Author: XiaLianSheng
Tutor: DaiGuangSen
School: Chinese Academy of Engineering Physics , Beijing Graduate School
Course: Nuclear Technology and Applications
Keywords: Pulse forming network Long pulse Flat fluctuations Blumlein-PFN Marx-PFN
CLC: TN78
Type: Master's thesis
Year: 2002
Downloads: 107
Quote: 0
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Abstract


Pulse forming network is to generate long pulse width of several microseconds main technical way . This paper describes the use of Blumlein-PFN and Marx-PFN network to generate long pulse width flat principle , design method and relevant parameters on the pulse waveform influence , through numerical simulation and experimental apparatus was designed by experiment to obtain the desired pulse output. By characteristics of pulse forming network , defined the various parameters on the network output impedance , the output pulse width and other effects , clear Blumlein-PFN and Marx-PFN network topology, the network is properly designed to provide the necessary knowledge . Simulation results show that : when the component from the nominal value of the true value of less than 5% when the effects of fluctuations in the pulse flat-top can be ignored ; capacitance within a sense of greater impact, therefore , selecting components should choose a low sense of pulse capacitor ; grounding wire inductance on Blumlein-PFN type structure topped output pulse fluctuations compared to Marx-PFN -type structure is much greater ; inductance deviation from the design value of the output pulse flat-top capacitance deviation with respect to the impact of large enough more . Experimental results show that : the Blumlein-PFN pulse forming network can be obtained on the matched load pulse voltage amplitude is equal to the magnitude of the charging voltage of the high voltage output , and the pulse width and consistent design flat , flat wave pulse parameter selection in the case of less than ± 1%, the pulse width of 3μs, and output stability. Help to increase the presence of mutual inductance bandpass network width and output impedance, flat-topped pulses to suppress fluctuations ; using Marx-PFN pulse forming network can be obtained on the matched load pulse voltage amplitude gain of N / 2 of the high-voltage output (N is Marx progression ) , and the pulse width and design consistent with flat top , flat top pulse jitter parameter selection in the best case is less than 1% , the pulse width of 3μs, and stable output pulse edge is less than 1μs; Blumlein-PFN pulse forming forefront of a larger network output , but you can take certain aspects of the design and engineering measures to achieve the pulse edge is less than 0.5μs.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Basic electronic circuits > Pulse,pulse circuits
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