Simulation Analysis of a Pulsed Compact FLTD System for Large-Area Hard X-Ray Sources

High-power pulses with edges rising in tens of nanoseconds can be directly produced using a fast linear transformer driver (FLTD). The use of FLTDs facilitates the driving of various high-power electron-beam diodes through vacuum-or magnetically insulated transmission lines (MITLs) and consequently...

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Bibliographic Details
Published in:IEEE transactions on plasma science 2016-05, Vol.44 (5), p.803-807
Main Authors: Zhang, PengFei, Sun, Jianfeng, Sun, Fengju, Qiu, Aici, Sun, Jiang, Hu, Yang, Cong, Peitian
Format: Article
Language:English
Subjects:
Anodes
Cathodes
Diodes
Fast linear transformer driver (FLTD)
Impedance
Integrated circuit modeling
magnetically insulated transmission lines (MITLs)
Monte Carlo simulation
Photonics
Power transmission lines
pulsed hard X-ray
Radiation
Simulation
Sun
X-ray astronomy
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Summary:High-power pulses with edges rising in tens of nanoseconds can be directly produced using a fast linear transformer driver (FLTD). The use of FLTDs facilitates the driving of various high-power electron-beam diodes through vacuum-or magnetically insulated transmission lines (MITLs) and consequently makes radiation simulation sources relatively compact. This paper investigates and optimizes the conformations and parameters of the secondary MITLs, diodes, and bremsstrahlung converter targets through the circuit simulation, particle-in-cell simulation, and Monte Carlo simulation, with a focus on the parameters of a pulse source from a two-level FLTD connected in series. The simulations reveal the influence of voltage on changes in diode with alternating cathode and anode and the relationship between the parameters of the composite target structure, photon/electron transfer efficiency, and radiation energy spectra. The distribution, evenness, and energy fluence of the radiation field in the electron-beam diode driven by the two-level FLTD connected in series are also determined. Results show that the FLTD system shows a significant potential in constructing compact hard X-ray sources.
ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2016.2544853