TY - JOUR
T1 - Simulation Analysis of a Pulsed Compact FLTD System for Large-Area Hard X-Ray Sources
AU - Zhang, Peng Fei
AU - Sun, Jianfeng
AU - Sun, Fengju
AU - Qiu, Aici
AU - Sun, Jiang
AU - Hu, Yang
AU - Cong, Peitian
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/5
Y1 - 2016/5
N2 - 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.
AB - 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.
KW - Fast linear transformer driver (FLTD)
KW - magnetically insulated transmission lines (MITLs)
KW - pulsed hard X-ray
KW - simulation
UR - https://www.scopus.com/pages/publications/84992302476
U2 - 10.1109/TPS.2016.2544853
DO - 10.1109/TPS.2016.2544853
M3 - 文章
AN - SCOPUS:84992302476
SN - 0093-3813
VL - 44
SP - 803
EP - 807
JO - IEEE Transactions on Plasma Science
JF - IEEE Transactions on Plasma Science
IS - 5
M1 - 7458910
ER -