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RSS2004 Vol. 16, No. 11
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2004,
16.
Abstract:
Image taken by a fiber optic taper coupled CCD camera system characterizes the great difference among its pixels responsivity. This difference will obviously degrades image quality and makes it difficulty to get a clear image. The flat field correcti...
Image taken by a fiber optic taper coupled CCD camera system characterizes the great difference among its pixels responsivity. This difference will obviously degrades image quality and makes it difficulty to get a clear image. The flat field correcti...
2004,
16.
Abstract:
The DC-SC photoinjector at Peking University is designed to provide an electron beam of average current 1mA with the energy of 2~3MeV and normalized rms transverse emittance of 3πmm-mrad at an 81.25MHz repetition rate. The test facility has been comp...
The DC-SC photoinjector at Peking University is designed to provide an electron beam of average current 1mA with the energy of 2~3MeV and normalized rms transverse emittance of 3πmm-mrad at an 81.25MHz repetition rate. The test facility has been comp...
2004,
16.
Abstract:
Present fundamental equations of thermoelastic deformation of thermal barrier coating(TBC) irradiated by laser in the condition of plane strain. Series solutions of steady temperature field are derived. Thermoelastic stress field in TBC is studied by...
Present fundamental equations of thermoelastic deformation of thermal barrier coating(TBC) irradiated by laser in the condition of plane strain. Series solutions of steady temperature field are derived. Thermoelastic stress field in TBC is studied by...
2004,
16.
Abstract:
An annular square intensity distribution with linear non-uniformity in the x direction is used to model the high-power laser, a detailed numerical simulation is performed to study the high-power laser propagation in a beam control system by means of ...
An annular square intensity distribution with linear non-uniformity in the x direction is used to model the high-power laser, a detailed numerical simulation is performed to study the high-power laser propagation in a beam control system by means of ...
2004,
16.
Abstract:
By combining the rate equation (RE) model with the chemical kinetics model, the effects of gain saturation models and chemical reaction systems on the performance of COIL are discussed in this paper. A premixed one-dimensional model is assumed for th...
By combining the rate equation (RE) model with the chemical kinetics model, the effects of gain saturation models and chemical reaction systems on the performance of COIL are discussed in this paper. A premixed one-dimensional model is assumed for th...
2004,
16.
Abstract:
Experiments that use single-pulse laser to ablate small steel ball in atmosphere were conducted. In these experiments, the propulsion efficiency parameters were obtained and different phenomena for the steel ball in front and back of the focus were a...
Experiments that use single-pulse laser to ablate small steel ball in atmosphere were conducted. In these experiments, the propulsion efficiency parameters were obtained and different phenomena for the steel ball in front and back of the focus were a...
2004,
16.
Abstract:
In this paper, the simulation and theoretical analysis of Nilike Ag Xraylaser (XRL) are included, which are driven by 1.06μm premainpulse with a power of 1.2×1013W/cm2. It is verified that, employing 23mm target, XRL can obtain effective amplifi...
In this paper, the simulation and theoretical analysis of Nilike Ag Xraylaser (XRL) are included, which are driven by 1.06μm premainpulse with a power of 1.2×1013W/cm2. It is verified that, employing 23mm target, XRL can obtain effective amplifi...
2004,
16.
Abstract:
The effects of vacuum annealing with different temperature gradient on 355nm Al2O3/MgF2 HR coatings were investigated. A number of samples had been prepared by electron beam evaporation using the same deposition process at optimal deposition temperat...
The effects of vacuum annealing with different temperature gradient on 355nm Al2O3/MgF2 HR coatings were investigated. A number of samples had been prepared by electron beam evaporation using the same deposition process at optimal deposition temperat...
2004,
16.
Abstract:
When adopting mode-locked Nd:YAG laser to choose single pulse, KD*P Pockels cell is usually used. The half wavelength voltage is 6.6 kV to the laser of 1.06μm wavelength. In recent years, cold cathode thyratron KN-22 is widely used in circuit, but he...
When adopting mode-locked Nd:YAG laser to choose single pulse, KD*P Pockels cell is usually used. The half wavelength voltage is 6.6 kV to the laser of 1.06μm wavelength. In recent years, cold cathode thyratron KN-22 is widely used in circuit, but he...
2004,
16.
Abstract:
Using cavity ring-down spectrometer technique, the precise measurement system for the high reflectivity of COIL mirrors has been built. At the straight ring-down cavity condition, some factors that may affect the accuracy of the measurement system wa...
Using cavity ring-down spectrometer technique, the precise measurement system for the high reflectivity of COIL mirrors has been built. At the straight ring-down cavity condition, some factors that may affect the accuracy of the measurement system wa...
2004,
16.
Abstract:
This paper reports the experimental research on the interaction of ultra-short and ultra-intense laser with Cu foil target. The spatial distributions and yield of the protons with different target thicknesses were recorded by nuclear track detector C...
This paper reports the experimental research on the interaction of ultra-short and ultra-intense laser with Cu foil target. The spatial distributions and yield of the protons with different target thicknesses were recorded by nuclear track detector C...
2004,
16.
Abstract:
The experimental investigation on X-ray laser is performed using two driving prepulses at the "Xingguang-Ⅱ" device. The experimental method and result are reported. The experiment didn't find remarkable enhancement of the output energy of X-ray laser...
The experimental investigation on X-ray laser is performed using two driving prepulses at the "Xingguang-Ⅱ" device. The experimental method and result are reported. The experiment didn't find remarkable enhancement of the output energy of X-ray laser...
2004,
16.
Abstract:
The paper analyzes several EMI modes during the charging and discharging periods of the power system of the 4×2 multisegment amplifiers. In order to deal these EMI modes, the methods of grounding one terminal of the capacitor, single grounding of th...
The paper analyzes several EMI modes during the charging and discharging periods of the power system of the 4×2 multisegment amplifiers. In order to deal these EMI modes, the methods of grounding one terminal of the capacitor, single grounding of th...
2004,
16.
Abstract:
The newly developed LD-pumped oscillator is ring structured. This oscillator has such advantages as almost 100% possibility for single-longitude-mode output, high stability for the waveform and amplitude of the output pulse. These advantage make it c...
The newly developed LD-pumped oscillator is ring structured. This oscillator has such advantages as almost 100% possibility for single-longitude-mode output, high stability for the waveform and amplitude of the output pulse. These advantage make it c...
2004,
16.
Abstract:
A compact L-band magnetically insulated transmission line oscillator(MILO),which has a new-type mode converter and a vewtype beam dump which increases a beam dump disk,a noe-cavity RF choke and a carefully designed impedance discontinuity between th...
A compact L-band magnetically insulated transmission line oscillator(MILO),which has a new-type mode converter and a vewtype beam dump which increases a beam dump disk,a noe-cavity RF choke and a carefully designed impedance discontinuity between th...
2004,
16.
Abstract:
Many high-power microwave (HPM) sources utilize an azimuthally symmetric output mode, like the TM01 circular waveguide or the coaxial TEM modes. If radiated directly these modes produce a doughnut-shaped pattern, with a bore-sight null. A novel mode-...
Many high-power microwave (HPM) sources utilize an azimuthally symmetric output mode, like the TM01 circular waveguide or the coaxial TEM modes. If radiated directly these modes produce a doughnut-shaped pattern, with a bore-sight null. A novel mode-...
2004,
16.
Abstract:
Considering azimuthal symmetrical harmonics and higher order harmonics in non-vane area, using field matching method and boundary condition of the ridge-loaded ring-plane slow wave structure, the dispersion equation of vane-loaded helical slow-wave s...
Considering azimuthal symmetrical harmonics and higher order harmonics in non-vane area, using field matching method and boundary condition of the ridge-loaded ring-plane slow wave structure, the dispersion equation of vane-loaded helical slow-wave s...
2004,
16.
Abstract:
According to the coupled-mode theory of variable crosssection waveguide and differential equations which the axial profile function of electric field satisfies, the program with auto optimized function was written. The influence of taper angle, cavi...
According to the coupled-mode theory of variable crosssection waveguide and differential equations which the axial profile function of electric field satisfies, the program with auto optimized function was written. The influence of taper angle, cavi...
2004,
16.
Abstract:
Because of the needs of variable pulse width, variable frequency and variable power of LD in the laser fuze communication systems, a model of the driver circuit is brought out for the system based on the circuits’s principle. Using retriggerable mono...
Because of the needs of variable pulse width, variable frequency and variable power of LD in the laser fuze communication systems, a model of the driver circuit is brought out for the system based on the circuits’s principle. Using retriggerable mono...
2004,
16.
Abstract:
The major subjects of RF window design for high average power gyroklystron amplifiers are to reduce the reflectivity and absorption power in order to enhance amplifier's stability and protect output window. In this paper, the window's reflection and ...
The major subjects of RF window design for high average power gyroklystron amplifiers are to reduce the reflectivity and absorption power in order to enhance amplifier's stability and protect output window. In this paper, the window's reflection and ...
2004,
16.
Abstract:
Using the self-consistent linear field theory, Cherenkov radiation excitated by the beam-wave interaction of a thin annular relativistic electron beam in a plasma-filled, dielectric coaxial cylindrical waveguide was analyzed. The dispersion equation ...
Using the self-consistent linear field theory, Cherenkov radiation excitated by the beam-wave interaction of a thin annular relativistic electron beam in a plasma-filled, dielectric coaxial cylindrical waveguide was analyzed. The dispersion equation ...
2004,
16.
Abstract:
Based on the static electricfield simulation, the structures of diode and insulator, as well as the position and shape of guiding magnetic-field are designed and optimized. Then the experiments of repetition rate and intense current electron-beam di...
Based on the static electricfield simulation, the structures of diode and insulator, as well as the position and shape of guiding magnetic-field are designed and optimized. Then the experiments of repetition rate and intense current electron-beam di...
2004,
16.
Abstract:
It is important to study the shielding effectiveness to reduce the electromagnetic interference and to protect electronic components. In this paper the shielding effectiveness of aperture arrays on different shapes is calculated and analyzed. The eff...
It is important to study the shielding effectiveness to reduce the electromagnetic interference and to protect electronic components. In this paper the shielding effectiveness of aperture arrays on different shapes is calculated and analyzed. The eff...
2004,
16.
Abstract:
The nonlinear beam-wave interaction in coupled-cavity TWT working in plasma-cavity hybrid mode, was studied using the theory of mode expansion, and the nonlinear beam-wave interaction self-consistent working equations have been obtained. The space-ch...
The nonlinear beam-wave interaction in coupled-cavity TWT working in plasma-cavity hybrid mode, was studied using the theory of mode expansion, and the nonlinear beam-wave interaction self-consistent working equations have been obtained. The space-ch...
2004,
16.
Abstract:
A novel high voltage pulse generator is developed for the simulation of HEMP according to the standard of IEC61000-2-9 and MIL-STD-461E. The generator can produce both single and repeated pulse. Its double-exponential output has a rise time less than...
A novel high voltage pulse generator is developed for the simulation of HEMP according to the standard of IEC61000-2-9 and MIL-STD-461E. The generator can produce both single and repeated pulse. Its double-exponential output has a rise time less than...
2004,
16.
Abstract:
Using the primary program 3DRun given by code VC++, multiplication effect of secondary emission microwave electron gun(SEMEG) is investigated. The relation between multiplication effect and length of cavity and electric field in the gun is studied wi...
Using the primary program 3DRun given by code VC++, multiplication effect of secondary emission microwave electron gun(SEMEG) is investigated. The relation between multiplication effect and length of cavity and electric field in the gun is studied wi...
2004,
16.
Abstract:
The key technologies of building a high repetition rate solid state switch were studied with two power MOSFET components, two MOSFET drivers, and fiber as high voltage isolator and optical data link. These technologies are trigger signal high voltage...
The key technologies of building a high repetition rate solid state switch were studied with two power MOSFET components, two MOSFET drivers, and fiber as high voltage isolator and optical data link. These technologies are trigger signal high voltage...
2004,
16.
Abstract:
The finite element method (FEM) is introduced to design a structure of cathode groupware for an electron curtain accelerator. An optimum structure of groupware and parameters of its heat source W wire have been designed. An uniform temperature distri...
The finite element method (FEM) is introduced to design a structure of cathode groupware for an electron curtain accelerator. An optimum structure of groupware and parameters of its heat source W wire have been designed. An uniform temperature distri...
2004,
16.
Abstract:
Modified three gradient method is a method to measure beam emittance developed from three gradient method which has been widely used in beam diagnostics. Beam radius' evolution versus focusing current can be fitted by a cross-over curve calculated fr...
Modified three gradient method is a method to measure beam emittance developed from three gradient method which has been widely used in beam diagnostics. Beam radius' evolution versus focusing current can be fitted by a cross-over curve calculated fr...
2004,
16.
Abstract:
An intelligent tuning system for the high current LIA is being designed at Laboratory of Accelerator Physics and Application, Institute of Fluid Physics. The goal to build the system is to adjust the beam centroid trajectory automatically for “Dragon...
An intelligent tuning system for the high current LIA is being designed at Laboratory of Accelerator Physics and Application, Institute of Fluid Physics. The goal to build the system is to adjust the beam centroid trajectory automatically for “Dragon...
2004,
16.
Abstract:
To extend the switch lifetime by minimizing electrode erosion, rotary arc gapswitches (RAG) were proposed. The rotation of the arc can be achieved by providing an external rotating magnetic field from outside or by self-induced magnetic field. Since...
To extend the switch lifetime by minimizing electrode erosion, rotary arc gapswitches (RAG) were proposed. The rotation of the arc can be achieved by providing an external rotating magnetic field from outside or by self-induced magnetic field. Since...
2004,
16.
Abstract:
In this work, TiNi shape memory alloy films on oxidized single crystal Si substrate were successfully prepared by cosputtering of TiNi target with a separated Ti target. The transformation behavior was investigated by differential scanning calorimet...
In this work, TiNi shape memory alloy films on oxidized single crystal Si substrate were successfully prepared by cosputtering of TiNi target with a separated Ti target. The transformation behavior was investigated by differential scanning calorimet...
