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RSS2016 Vol. 28, No. 05
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2016,
28: 050101.
doi: 10.11884/HPLPB201628.050101
Abstract:
A high average power linearly polarized chirped pulse amplification (CPA) system is reported, which comprises of a fully fiberized fiber amplifier chain and a transmission grating pulse compressor. Before compression, the output average power of 425 ...
A high average power linearly polarized chirped pulse amplification (CPA) system is reported, which comprises of a fully fiberized fiber amplifier chain and a transmission grating pulse compressor. Before compression, the output average power of 425 ...
2016,
28: 050102.
doi: 10.11884/HPLPB201628.050102
Abstract:
The design of a linear-transformer-driver (LTD) accelerator for wire-array Z-pinch experiments was presented. The accelerator comprises 6 modules in parallel, and each of the module has 8 series 0.8 MA LTD cavities in a voltage adder configuration. A...
The design of a linear-transformer-driver (LTD) accelerator for wire-array Z-pinch experiments was presented. The accelerator comprises 6 modules in parallel, and each of the module has 8 series 0.8 MA LTD cavities in a voltage adder configuration. A...
2016,
28: 050201.
doi: 10.11884/HPLPB201628.050201
Abstract:
The rod-pinch diode has been widely applied to flash radiography due to its merits of high brightness and spatial resolution. Many efforts have been committed to improve its dose while keeping the spot size small. Some factors affecting the rod pinch...
The rod-pinch diode has been widely applied to flash radiography due to its merits of high brightness and spatial resolution. Many efforts have been committed to improve its dose while keeping the spot size small. Some factors affecting the rod pinch...
2016,
28: 051001.
doi: 10.11884/HPLPB201628.051001
Abstract:
To resolve the problem that the background pixels in an object model induce localization errors in target tracking, a new target model establishing method based on HRBW is put forward. The fuzzy membership degree based on target/background histogram ...
To resolve the problem that the background pixels in an object model induce localization errors in target tracking, a new target model establishing method based on HRBW is put forward. The fuzzy membership degree based on target/background histogram ...
2016,
28: 051002.
doi: 10.11884/HPLPB201628.051002
Abstract:
According to the different kinds of morphology features, 3D grid models of mitigated pits were built, and effects of different kinds of mitigated pits models on transport of laser beam (351 nm) was studied by using scalar diffraction theory and Fast ...
According to the different kinds of morphology features, 3D grid models of mitigated pits were built, and effects of different kinds of mitigated pits models on transport of laser beam (351 nm) was studied by using scalar diffraction theory and Fast ...
2016,
28: 052001.
doi: 10.11884/HPLPB201628.052001
Abstract:
Laser fusion ignition requires strict control over laser facility, target quality and diagnosis precision in experiments. With the experiments approaching ignition regime, the requirement of precision is increased. In the precision experiments, the t...
Laser fusion ignition requires strict control over laser facility, target quality and diagnosis precision in experiments. With the experiments approaching ignition regime, the requirement of precision is increased. In the precision experiments, the t...
2016,
28: 052002.
doi: 10.11884/HPLPB201628.052002
Abstract:
The absorption characteristics of the plane electromagnetic wave in magnetized plasma is studied by using the equivalent input impedance method. The result shows that the absorption characteristics can be primarily affected by the electron numerical ...
The absorption characteristics of the plane electromagnetic wave in magnetized plasma is studied by using the equivalent input impedance method. The result shows that the absorption characteristics can be primarily affected by the electron numerical ...
2016,
28: 053001.
doi: 10.11884/HPLPB201628.053001
Abstract:
In order to overcome the pulse shortening problem caused by the microwave leakage inside the device, the anode of the oversized backward wave oscillator was specially designed. In the PIC simulation, oversized backward wave oscillators with different...
In order to overcome the pulse shortening problem caused by the microwave leakage inside the device, the anode of the oversized backward wave oscillator was specially designed. In the PIC simulation, oversized backward wave oscillators with different...
2016,
28: 053002.
doi: 10.11884/HPLPB201628.053002
Abstract:
The measurement layout of the high power microwave in radiation field, which includes measuring the distance, the integral angle range, and the equality of E-plane and H-plane, is researched with numerical methods. The influence of measurement layout...
The measurement layout of the high power microwave in radiation field, which includes measuring the distance, the integral angle range, and the equality of E-plane and H-plane, is researched with numerical methods. The influence of measurement layout...
2016,
28: 053003.
doi: 10.11884/HPLPB201628.053003
Abstract:
In the paper, the heat dissipation of high power microwave tubes collector is calculated by using Euler two-phase model and the boiling model. Based on the electron beam sink rule, the distribution of heat source in collector material and cooling wat...
In the paper, the heat dissipation of high power microwave tubes collector is calculated by using Euler two-phase model and the boiling model. Based on the electron beam sink rule, the distribution of heat source in collector material and cooling wat...
2016,
28: 053004.
doi: 10.11884/HPLPB201628.053004
Abstract:
A novel tuning method based on aggressive space mapping (ASM) and genetic algorithm (GA) is presented in this paper. The method is applied to microwave filters with different phase shift effects at I/O ports. The tuning direction and magnitude are pr...
A novel tuning method based on aggressive space mapping (ASM) and genetic algorithm (GA) is presented in this paper. The method is applied to microwave filters with different phase shift effects at I/O ports. The tuning direction and magnitude are pr...
2016,
28: 053005.
doi: 10.11884/HPLPB201628.053005
Abstract:
A novel carbon/carbon composite cathode with carbon fibers perpendicular to the surface is developed and used in the relativistic klystron amplifier(RKA). The experimental results show that the field enhanced on the whisker is the main ignition of th...
A novel carbon/carbon composite cathode with carbon fibers perpendicular to the surface is developed and used in the relativistic klystron amplifier(RKA). The experimental results show that the field enhanced on the whisker is the main ignition of th...
2016,
28: 053006.
doi: 10.11884/HPLPB201628.053006
Abstract:
To generate wideband high power microwave with relatively high central frequency, a quarter wave switched oscillator filled with transformer oil as insulating medium is investigated in this paper. Firstly, the structure of this oscillator is introduc...
To generate wideband high power microwave with relatively high central frequency, a quarter wave switched oscillator filled with transformer oil as insulating medium is investigated in this paper. Firstly, the structure of this oscillator is introduc...
2016,
28: 053007.
doi: 10.11884/HPLPB201628.053007
Abstract:
A high power RF pulse formation system was developed based on ferrite magnetic nonlinear transmission lines with cross-linking elements. The system consisted of a pulse forming line, nonlinear transmission lines and a matched high power load or combi...
A high power RF pulse formation system was developed based on ferrite magnetic nonlinear transmission lines with cross-linking elements. The system consisted of a pulse forming line, nonlinear transmission lines and a matched high power load or combi...
2016,
28: 053201.
doi: 10.11884/HPLPB201628.053201
Abstract:
Based on principle of power synthesis of sparse array, mathematical model of spatial power combining is established. Relation between cross angle of beams and synthesis efficiency on aimed point from two antenna nodes is derived. Furthermore, the set...
Based on principle of power synthesis of sparse array, mathematical model of spatial power combining is established. Relation between cross angle of beams and synthesis efficiency on aimed point from two antenna nodes is derived. Furthermore, the set...
2016,
28: 053202.
doi: 10.11884/HPLPB201628.053202
Abstract:
This paper addresses the existence detection of blanket jamming based on fractal features in fractional Fourier transform (FRFT) domain. Firstly, the existences of fractal features of three typical jamming signals are analyzed, and box dimension and ...
This paper addresses the existence detection of blanket jamming based on fractal features in fractional Fourier transform (FRFT) domain. Firstly, the existences of fractal features of three typical jamming signals are analyzed, and box dimension and ...
2016,
28: 054001.
doi: 10.11884/HPLPB201628.054001
Abstract:
The beam optic characteristics of the neutral beam ion source affects the neutral beam injection power. With theoretical calculation and experimental scanning, study on the variation of half width of extraction beam with perveance is carried out. The...
The beam optic characteristics of the neutral beam ion source affects the neutral beam injection power. With theoretical calculation and experimental scanning, study on the variation of half width of extraction beam with perveance is carried out. The...
2016,
28: 054002.
doi: 10.11884/HPLPB201628.054002
Abstract:
In order to detect the chemical weapon contained in the unmarked ammunition, a fast neutron chemical weapon detection system based on associated particle technology (APT) was developed. The detection system included an associated particle DT neutron ...
In order to detect the chemical weapon contained in the unmarked ammunition, a fast neutron chemical weapon detection system based on associated particle technology (APT) was developed. The detection system included an associated particle DT neutron ...
2016,
28: 054003.
doi: 10.11884/HPLPB201628.054003
Abstract:
To improve the reconstruction quality of flash X-ray radiography containing noises, an image reconstruction algorithm based on ML-EM (maximum likelihood-expectation maximum) for radiography is studied. According to the characters of low signal to noi...
To improve the reconstruction quality of flash X-ray radiography containing noises, an image reconstruction algorithm based on ML-EM (maximum likelihood-expectation maximum) for radiography is studied. According to the characters of low signal to noi...
2016,
28: 054101.
doi: 10.11884/HPLPB201628.054101
Abstract:
Preparation course and wire properties of ultra-fine W wire with modulation diameter were studied by using the preparation device, laser-diffraction device for on-line diameter measurement, and the SEM and mechanical property test. It was showed that...
Preparation course and wire properties of ultra-fine W wire with modulation diameter were studied by using the preparation device, laser-diffraction device for on-line diameter measurement, and the SEM and mechanical property test. It was showed that...
2016,
28: 055001.
doi: 10.11884/HPLPB201628.055001
Abstract:
In this paper, a microsecond pulse driven helium plasma jet was well characterized by different electrode configurations and discharge parameters. The influence of dielectric material diameter (3 mm, 5 mm and 8 mm), different electrode configuration ...
In this paper, a microsecond pulse driven helium plasma jet was well characterized by different electrode configurations and discharge parameters. The influence of dielectric material diameter (3 mm, 5 mm and 8 mm), different electrode configuration ...
2016,
28: 055002.
doi: 10.11884/HPLPB201628.055002
Abstract:
Based on fast switching power MOSFET, by using a high repetitive frequency integrated drive chip and a high efficiency magnetic coupling structure, the compact high power repetitive frequency generator is designed. This generator is constructed by fo...
Based on fast switching power MOSFET, by using a high repetitive frequency integrated drive chip and a high efficiency magnetic coupling structure, the compact high power repetitive frequency generator is designed. This generator is constructed by fo...
2016,
28: 055003.
doi: 10.11884/HPLPB201628.055003
Abstract:
A series of current pulse shaping experiments have been carried out on the Primary Test Stand(PTS). More than 5 MA peak current were successfully achieved on the load with a rise time of 600 ns. The typical rise time of PTS machine is 90 ns with abou...
A series of current pulse shaping experiments have been carried out on the Primary Test Stand(PTS). More than 5 MA peak current were successfully achieved on the load with a rise time of 600 ns. The typical rise time of PTS machine is 90 ns with abou...
2016,
28: 055004.
doi: 10.11884/HPLPB201628.055004
Abstract:
It is important to study initial discharge for researching operating process in gas spark gap. The whole initial discharge process in gas spark gap was simulated in this paper by PIC-DSMC code. The evolutions of electron density distribution and ion ...
It is important to study initial discharge for researching operating process in gas spark gap. The whole initial discharge process in gas spark gap was simulated in this paper by PIC-DSMC code. The evolutions of electron density distribution and ion ...
2016,
28: 055005.
doi: 10.11884/HPLPB201628.055005
Abstract:
An all solid-state high-voltage rectangular pulse generator is proposed. This generator consists of a Marx generator, a pulse forming line (PFL) and a magnetic switch (MS). As a power supply, the Marx generator discharges to the PFL through an induct...
An all solid-state high-voltage rectangular pulse generator is proposed. This generator consists of a Marx generator, a pulse forming line (PFL) and a magnetic switch (MS). As a power supply, the Marx generator discharges to the PFL through an induct...
2016,
28: 055006.
doi: 10.11884/HPLPB201628.055006
Abstract:
Though the electrical insulation properties of epoxy resin are very excellent, the surface of epoxy insulator is charged easily and the charge is hard to decay. When the charge density accumulates to a level, it would lead to a part discharge or a su...
Though the electrical insulation properties of epoxy resin are very excellent, the surface of epoxy insulator is charged easily and the charge is hard to decay. When the charge density accumulates to a level, it would lead to a part discharge or a su...
2016,
28: 055007.
doi: 10.11884/HPLPB201628.055007
Abstract:
The on-line calibration of capacitive voltage dividers used in low impedance pulse forming lines is discussed, and a parallel inductance is proposed to compensate the capacitive load of the forming line. Due to the low impedance of the forming line, ...
The on-line calibration of capacitive voltage dividers used in low impedance pulse forming lines is discussed, and a parallel inductance is proposed to compensate the capacitive load of the forming line. Due to the low impedance of the forming line, ...
2016,
28: 055008.
doi: 10.11884/HPLPB201628.055008
Abstract:
In order to overcome disadvantages of pulse generator for electrostatic precipitators (ESP), such as pulse stretching, residual voltage accumulation of capacitors and oscillating voltage of ESP, an appropriate solution with an auxiliary switch invers...
In order to overcome disadvantages of pulse generator for electrostatic precipitators (ESP), such as pulse stretching, residual voltage accumulation of capacitors and oscillating voltage of ESP, an appropriate solution with an auxiliary switch invers...
2016,
28: 055009.
doi: 10.11884/HPLPB201628.055009
Abstract:
An experiment platform of laser illumination together with pulsed voltage excitation was built. The vacuum surface flashover performance of an angled-insulator was studied. The results show that the performance of +45 insulator is better than that of...
An experiment platform of laser illumination together with pulsed voltage excitation was built. The vacuum surface flashover performance of an angled-insulator was studied. The results show that the performance of +45 insulator is better than that of...
2016,
28: 055010.
doi: 10.11884/HPLPB201628.055010
Abstract:
Based on PTS accelerator, combined with theoretical calculation and circuit simulation, magnetic driven loading experiments design method and sample loading path control techniques were developed and improved. With the excellent output characteristic...
Based on PTS accelerator, combined with theoretical calculation and circuit simulation, magnetic driven loading experiments design method and sample loading path control techniques were developed and improved. With the excellent output characteristic...
2016,
28: 055101.
doi: 10.11884/HPLPB201628.055101
Abstract:
In order to meet the requirement of crack region segmentation, based on the characteristics of oil sedimentary core industrial CT image, the level set segmentation algorithm is improved. Firstly, a median filter is used for denoising, and a C-V model...
In order to meet the requirement of crack region segmentation, based on the characteristics of oil sedimentary core industrial CT image, the level set segmentation algorithm is improved. Firstly, a median filter is used for denoising, and a C-V model...
2016,
28: 055102.
doi: 10.11884/HPLPB201628.055102
Abstract:
This paper demonstrates a fiber link based timing distribution with femtosecond precision. The output femtosecond laser pulse train from a passively mode-locked fiber laser serves as master clock, which is distributed over a 2 km single mode fiber li...
This paper demonstrates a fiber link based timing distribution with femtosecond precision. The output femtosecond laser pulse train from a passively mode-locked fiber laser serves as master clock, which is distributed over a 2 km single mode fiber li...
2016,
28: 055103.
doi: 10.11884/HPLPB201628.055103
Abstract:
Plasma characteristics are key parameters of ion source. The characteristics of plasma in high current laser ion source are diagnosed by optic emission spectroscopy and an ICCD camera. The plasma is produced by a quadruplicated frequency Nd: YAG lase...
Plasma characteristics are key parameters of ion source. The characteristics of plasma in high current laser ion source are diagnosed by optic emission spectroscopy and an ICCD camera. The plasma is produced by a quadruplicated frequency Nd: YAG lase...
2016,
28: 055104.
doi: 10.11884/HPLPB201628.055104
Abstract:
An on-line electron beam energy measurement technique was designed for the beam characteristics of linear induction accelerator. In this technique the slice average energy of the electron beam was measured by beam position monitors and magnetic analy...
An on-line electron beam energy measurement technique was designed for the beam characteristics of linear induction accelerator. In this technique the slice average energy of the electron beam was measured by beam position monitors and magnetic analy...
2016,
28: 056001.
doi: 10.11884/HPLPB201628.056001
Abstract:
A numerical simulation method is built based on the point reactor kinetic equations to study the impact of scattering neutrons on a super-prompt critical system, and its correctness is validated by pulse experiment on CFBR-Ⅱ reactor. The analysis and...
A numerical simulation method is built based on the point reactor kinetic equations to study the impact of scattering neutrons on a super-prompt critical system, and its correctness is validated by pulse experiment on CFBR-Ⅱ reactor. The analysis and...
2016,
28: 056002.
doi: 10.11884/HPLPB201628.056002
Abstract:
Assuming that the Ti-H plasma generated by vacuum arc ion source using Ti-H solid solution was a non-equilibrium two-temperature plasma. The dissociation of hydrogen and the ionization of atomic particles were described by Culdberg-Waage dissociation...
Assuming that the Ti-H plasma generated by vacuum arc ion source using Ti-H solid solution was a non-equilibrium two-temperature plasma. The dissociation of hydrogen and the ionization of atomic particles were described by Culdberg-Waage dissociation...
2016,
28: 059001.
doi: 10.11884/HPLPB201628.059001
Abstract:
The electron irradiation ground simulation test was conducted on the mechanical property of polyimide film, thermo gravimetric and X-ray Photoelectron Spectroscopy was used to analyze the evolution mechanism of polyimide film in different electron fl...
The electron irradiation ground simulation test was conducted on the mechanical property of polyimide film, thermo gravimetric and X-ray Photoelectron Spectroscopy was used to analyze the evolution mechanism of polyimide film in different electron fl...
