Email alert
RSS2014 Vol. 26, No. 01
Recommend Articles
Display Method:
2014,
26: 010101.
doi: 10.3788/HPLPB201426.010101
Abstract:
A stable pulsed thulium-doped fiber laser at 2 m is obtained based on gain-switched techniques, with the central wavelength of 1 979.4 nm. The pulse width and repetition rate of the seed laser can be tuned in the range of 60~200 ns and 1~100 kHz, res...
A stable pulsed thulium-doped fiber laser at 2 m is obtained based on gain-switched techniques, with the central wavelength of 1 979.4 nm. The pulse width and repetition rate of the seed laser can be tuned in the range of 60~200 ns and 1~100 kHz, res...
2014,
26: 010102.
doi: 10.3788/HPLPB201426.010102
Abstract:
Pumped by a laser diode array with an external cavity of Littrow, whose linewidth is 0.26 nm, a cesium vapor laser is obtained using the cesium cell filled with methane of 80 kPa. At 120 ℃ of the cesium vapor cell, laser with output power of 394 mW a...
Pumped by a laser diode array with an external cavity of Littrow, whose linewidth is 0.26 nm, a cesium vapor laser is obtained using the cesium cell filled with methane of 80 kPa. At 120 ℃ of the cesium vapor cell, laser with output power of 394 mW a...
2014,
26: 010201.
doi: 10.3788/HPLPB201426.010201
Abstract:
Pulsed power driven flash X-ray generators are essential testing equipments in areas like hydrokinetics. Smaller spot size and higher radiation dose are expected according to physical requirements. Current status and key problems of several X-ray dio...
Pulsed power driven flash X-ray generators are essential testing equipments in areas like hydrokinetics. Smaller spot size and higher radiation dose are expected according to physical requirements. Current status and key problems of several X-ray dio...
2014,
26: 011001.
doi: 10.3788/HPLPB201426.011001
Abstract:
We analyze the stray light caused by surface scattering of the sum-frequency crystal in third-order correlation measurement and its influence on the contrast of the sum-frequency light. Besides, the expression of the stray light caused by surface sca...
We analyze the stray light caused by surface scattering of the sum-frequency crystal in third-order correlation measurement and its influence on the contrast of the sum-frequency light. Besides, the expression of the stray light caused by surface sca...
2014,
26: 011002.
doi: 10.3788/HPLPB201426.011002
Abstract:
An all-fiber multichannel laser configuration of coherent beam combining with an optical feed-back ring cavity is reported. The passive coherent combining of multichannel Yb-doped fiber amplifiers is achieved with the ring cavity. The traditional pro...
An all-fiber multichannel laser configuration of coherent beam combining with an optical feed-back ring cavity is reported. The passive coherent combining of multichannel Yb-doped fiber amplifiers is achieved with the ring cavity. The traditional pro...
2014,
26: 011003.
doi: 10.3788/HPLPB201426.011003
Abstract:
In order to analyze the effect of jet cooling technology on thin disk laser, starting from the turbulent heat transfer theory, we define two parameters ha and the average maximum temperature difference for evaluation of jet cooling heat transfer capa...
In order to analyze the effect of jet cooling technology on thin disk laser, starting from the turbulent heat transfer theory, we define two parameters ha and the average maximum temperature difference for evaluation of jet cooling heat transfer capa...
2014,
26: 011004.
doi: 10.3788/HPLPB201426.011004
Abstract:
We propose a compact photonic crystal Mach-Zehnder interferometer index sensor with a two-dimensional rotated square lattice, based on the photonic crystal self-collimation effect. Using the same background index, the different index of the circular ...
We propose a compact photonic crystal Mach-Zehnder interferometer index sensor with a two-dimensional rotated square lattice, based on the photonic crystal self-collimation effect. Using the same background index, the different index of the circular ...
2014,
26: 011005.
doi: 10.3788/HPLPB201426.011005
Abstract:
The calibration of energy calorimeter is one of the important aspects in the measurement of the energy of high power laser facility. Using the method of linearity fitting is suggested in the calibration of energy calorimeter. The standard deviation o...
The calibration of energy calorimeter is one of the important aspects in the measurement of the energy of high power laser facility. Using the method of linearity fitting is suggested in the calibration of energy calorimeter. The standard deviation o...
2014,
26: 011006.
doi: 10.3788/HPLPB201426.011006
Abstract:
In order to improve the reflectance of the GaSb-based laser cavity mask, the laser cavity film was designed in accordance with the relevant film design theory and by film-design software. The reflectance of the high anti-reflection film was higher th...
In order to improve the reflectance of the GaSb-based laser cavity mask, the laser cavity film was designed in accordance with the relevant film design theory and by film-design software. The reflectance of the high anti-reflection film was higher th...
2014,
26: 011007.
doi: 10.3788/HPLPB201426.011007
Abstract:
Laser diode pumped Nd:YVO4 laser is used as light source. Green beam whose wavelength is 532 nm is generated by frequency doubling through KTP. The quasi-non-diffracting Bessel green beam is obtained by axicon. The distribution of the green beam ligh...
Laser diode pumped Nd:YVO4 laser is used as light source. Green beam whose wavelength is 532 nm is generated by frequency doubling through KTP. The quasi-non-diffracting Bessel green beam is obtained by axicon. The distribution of the green beam ligh...
2014,
26: 011008.
doi: 10.3788/HPLPB201426.011008
Abstract:
Radially polarized light has been a focus in recent years with wide application in particle manipulation, metal cutting and improvement of microscope resolution. It can be generated by an intro-cavity grating mirror in the resonator of a laser. In th...
Radially polarized light has been a focus in recent years with wide application in particle manipulation, metal cutting and improvement of microscope resolution. It can be generated by an intro-cavity grating mirror in the resonator of a laser. In th...
2014,
26: 011009.
doi: 10.3788/HPLPB201426.011009
Abstract:
The regular circular fringes could be observed when the visible array CCD was irradiated by 532 nm pulsed laser from a distance of 31.5 m. Their generating conditions and mechanism have been investigated by changing the incident angle, the attenuatio...
The regular circular fringes could be observed when the visible array CCD was irradiated by 532 nm pulsed laser from a distance of 31.5 m. Their generating conditions and mechanism have been investigated by changing the incident angle, the attenuatio...
2014,
26: 011010.
doi: 10.3788/HPLPB201426.011010
Abstract:
In the process of Shack-Hartmann wave-front measure, meshing of Shack-Hartmann image is widely used for calculating wave-front slope. The conventional meshing method, which manually adjusts the mesh by observing the Shack-Hartmann image, is time-cons...
In the process of Shack-Hartmann wave-front measure, meshing of Shack-Hartmann image is widely used for calculating wave-front slope. The conventional meshing method, which manually adjusts the mesh by observing the Shack-Hartmann image, is time-cons...
2014,
26: 011011.
doi: 10.3788/HPLPB201426.011011
Abstract:
Fast steering mirror (FSM) driven by piezoelectric actuator has been widely used in multifarious precision instruments for stabilization and tracking systems, whose tracking accuracy is decided by the control accuracy of FSM. However, there is a seri...
Fast steering mirror (FSM) driven by piezoelectric actuator has been widely used in multifarious precision instruments for stabilization and tracking systems, whose tracking accuracy is decided by the control accuracy of FSM. However, there is a seri...
2014,
26: 011012.
doi: 10.3788/HPLPB201426.011012
Abstract:
The beam combination is an effective method to improve laser power and beam quality, the parameters of chirped pulsed Gaussian beam will affect the result. Based on the Fraunhofer diffraction integral formula, the formulas for the far-field relative ...
The beam combination is an effective method to improve laser power and beam quality, the parameters of chirped pulsed Gaussian beam will affect the result. Based on the Fraunhofer diffraction integral formula, the formulas for the far-field relative ...
2014,
26: 011013.
doi: 10.3788/HPLPB201426.011013
Abstract:
In detecting process, the detecting ability is not only affected by the detecting signal-to-noise ratio(SNR), also by the quality of the detecting image, and the detecting ability evaluating method in existence is only based on the SNR. To offset the...
In detecting process, the detecting ability is not only affected by the detecting signal-to-noise ratio(SNR), also by the quality of the detecting image, and the detecting ability evaluating method in existence is only based on the SNR. To offset the...
2014,
26: 011014.
doi: 10.3788/HPLPB201426.011014
Abstract:
An investigation and analysis of two methods, the multi-angle knife-edge method and the right-angle double-knife-edge method, was demonstrated for the light distribution measurement. The basic principles of the two methods were introduced. Their abil...
An investigation and analysis of two methods, the multi-angle knife-edge method and the right-angle double-knife-edge method, was demonstrated for the light distribution measurement. The basic principles of the two methods were introduced. Their abil...
2014,
26: 011015.
doi: 10.3788/HPLPB201426.011015
Abstract:
A hundred-watt semiconductor laser packaged with 12 single strip-type chips divided into 2 groups where each group was set from high to low in ladder form was designed, and its thermal characteristics under steady-state work were analyzed by ANSYS. T...
A hundred-watt semiconductor laser packaged with 12 single strip-type chips divided into 2 groups where each group was set from high to low in ladder form was designed, and its thermal characteristics under steady-state work were analyzed by ANSYS. T...
2014,
26: 011016.
doi: 10.3788/HPLPB201426.011016
Abstract:
Using Huygens-Fresnel diffraction integral formula, the expression for the cross-spectral density of the Gaussian-Schell model (GSM) beam which is modulated by the defect of the nonlinear Kerr medium surface is derived. The intensity distribution of ...
Using Huygens-Fresnel diffraction integral formula, the expression for the cross-spectral density of the Gaussian-Schell model (GSM) beam which is modulated by the defect of the nonlinear Kerr medium surface is derived. The intensity distribution of ...
2014,
26: 011017.
doi: 10.3788/HPLPB201426.011017
Abstract:
Because of low frequency distorted wave front impacting on beam quality, a thin mirror with a diameter of 300 mm and a ratio of radius to thickness of 20 is optimized in order to compensate the distorted wave front. Meanwhile, the far field beam qual...
Because of low frequency distorted wave front impacting on beam quality, a thin mirror with a diameter of 300 mm and a ratio of radius to thickness of 20 is optimized in order to compensate the distorted wave front. Meanwhile, the far field beam qual...
2014,
26: 011018.
doi: 10.3788/HPLPB201426.011018
Abstract:
For the use of the magneto-optic crystal in a high-power optical isolator, the relationship between the isolation and the incident light power is analyzed with Jones matrix using the parameters of actual optical elements. A compensation scheme for th...
For the use of the magneto-optic crystal in a high-power optical isolator, the relationship between the isolation and the incident light power is analyzed with Jones matrix using the parameters of actual optical elements. A compensation scheme for th...
2014,
26: 012001.
doi: 10.3788/HPLPB201426.012001
Abstract:
In surface defects evaluation of large fine optics, dusts and digs are very difficult to be distinguished from each other. In this paper, a pattern-recognition-based automatic discrimination method between dusts and digs is proposed to solve the prob...
In surface defects evaluation of large fine optics, dusts and digs are very difficult to be distinguished from each other. In this paper, a pattern-recognition-based automatic discrimination method between dusts and digs is proposed to solve the prob...
2014,
26: 012002.
doi: 10.3788/HPLPB201426.012002
Abstract:
To improve the quality of laser-induced breakdown spectroscopy, the effects of magnetic confinement on plasma were studied, which was excited by Nd: YAG laser. The experimental results show that plasma radiation intensity increased with increasing ma...
To improve the quality of laser-induced breakdown spectroscopy, the effects of magnetic confinement on plasma were studied, which was excited by Nd: YAG laser. The experimental results show that plasma radiation intensity increased with increasing ma...
2014,
26: 012003.
doi: 10.3788/HPLPB201426.012003
Abstract:
The Cu-doped SiO2 composite aerogels with different Cu doping content were successfully prepared by sol-gel process and subsequently supercritical drying with carbon dioxide. Tetramethyl orthosilicate and copper (Ⅱ) acetate were used as Si source and...
The Cu-doped SiO2 composite aerogels with different Cu doping content were successfully prepared by sol-gel process and subsequently supercritical drying with carbon dioxide. Tetramethyl orthosilicate and copper (Ⅱ) acetate were used as Si source and...
2014,
26: 012004.
doi: 10.3788/HPLPB201426.012004
Abstract:
The polystyrene (CH)/carbonized resorcinol formaldehyde (CRF), CRF/SiO2, CH/Al dual-layer perturbation targets for ICF resolved experiment were investigated. The CRF aerogel sheets with a density of 250 and 800 mg/cm3 were synthesized by sol-gel proc...
The polystyrene (CH)/carbonized resorcinol formaldehyde (CRF), CRF/SiO2, CH/Al dual-layer perturbation targets for ICF resolved experiment were investigated. The CRF aerogel sheets with a density of 250 and 800 mg/cm3 were synthesized by sol-gel proc...
2014,
26: 012005.
doi: 10.3788/HPLPB201426.012005
Abstract:
Based on the wave equation of ultra-intense linearly polarized laser pulse propagating in electron-positron plasmas, the filamentation instability was investigated. The nonlinear dispersion relation and the growth rate of instability were derived. Th...
Based on the wave equation of ultra-intense linearly polarized laser pulse propagating in electron-positron plasmas, the filamentation instability was investigated. The nonlinear dispersion relation and the growth rate of instability were derived. Th...
2014,
26: 012006.
doi: 10.3788/HPLPB201426.012006
Abstract:
Four 60% DKDP crystals were grown at different temperatures using point seed technique. The growing process was observed. The properties including optical transmittance, rocking curve and laser induced damage threshold were measured. The results show...
Four 60% DKDP crystals were grown at different temperatures using point seed technique. The growing process was observed. The properties including optical transmittance, rocking curve and laser induced damage threshold were measured. The results show...
2014,
26: 012007.
doi: 10.3788/HPLPB201426.012007
Abstract:
The present work investigates the fabrication process of precision Nd:YAG crystal slab which is extensively used in high-power slab lasers. Properties of the crystal and problems during fabrication were analyzed. A novel process based on the composit...
The present work investigates the fabrication process of precision Nd:YAG crystal slab which is extensively used in high-power slab lasers. Properties of the crystal and problems during fabrication were analyzed. A novel process based on the composit...
2014,
26: 012008.
doi: 10.3788/HPLPB201426.012008
Abstract:
The accuracy of transmission grating calibration on synchrotron radiation could be worsened by high-order harmonics. In order to correct this influence, a calibration method was proposed for the light source with weak high-order harmonics. This metho...
The accuracy of transmission grating calibration on synchrotron radiation could be worsened by high-order harmonics. In order to correct this influence, a calibration method was proposed for the light source with weak high-order harmonics. This metho...
2014,
26: 012009.
doi: 10.3788/HPLPB201426.012009
Abstract:
For the need of X-ray wavelength determination of laser plasma, a novel method was presented for wavelength determination by using curved spectral line measured with planar crystal spectrometer. In normal reference line method, the wavelength of more...
For the need of X-ray wavelength determination of laser plasma, a novel method was presented for wavelength determination by using curved spectral line measured with planar crystal spectrometer. In normal reference line method, the wavelength of more...
2014,
26: 012010.
doi: 10.3788/HPLPB201426.012010
Abstract:
Propagation characteristics of the shock waves induced by nanosecond laser in material were investigated by ultrafast time-resolved optical diagnosis and studied based on the basic theories of the reflection and refraction of spherical waves across a...
Propagation characteristics of the shock waves induced by nanosecond laser in material were investigated by ultrafast time-resolved optical diagnosis and studied based on the basic theories of the reflection and refraction of spherical waves across a...
2014,
26: 013001.
doi: 10.3788/HPLPB201426.013001
Abstract:
We obtained theinitial parameters for the 35 GHz double anode magnetron injection gun based on the trade-off equations, and got the parameters optimized by programming. We did a 3D numerical simulation using the calculation module of the magnetron in...
We obtained theinitial parameters for the 35 GHz double anode magnetron injection gun based on the trade-off equations, and got the parameters optimized by programming. We did a 3D numerical simulation using the calculation module of the magnetron in...
2014,
26: 013002.
doi: 10.3788/HPLPB201426.013002
Abstract:
The ultra-wideband TEM horn antenna fed by coaxial cable and loaded with lumped resistor for the application of imaging radar system is presented. The low-frequency characteristic of the antenna and its directional radiation ability are largely impro...
The ultra-wideband TEM horn antenna fed by coaxial cable and loaded with lumped resistor for the application of imaging radar system is presented. The low-frequency characteristic of the antenna and its directional radiation ability are largely impro...
2014,
26: 013003.
doi: 10.3788/HPLPB201426.013003
Abstract:
The design of an UWB matching feed structure was presented. The structure adopted a series-parallel hybrid feed method. In an ideal conditions, the structure could feed for a 200 UWB antenna from a 50 coax without reflection. Experiments based on TEM...
The design of an UWB matching feed structure was presented. The structure adopted a series-parallel hybrid feed method. In an ideal conditions, the structure could feed for a 200 UWB antenna from a 50 coax without reflection. Experiments based on TEM...
2014,
26: 013004.
doi: 10.3788/HPLPB201426.013004
Abstract:
This paper presents a novel type of overmoded bend coaxial waveguide with a 45 bend angle at a center frequency of 4.0 GHz. The basic principle of the overmoded bend coaxial waveguide is introduced, and the condition of realizing high efficiency turn...
This paper presents a novel type of overmoded bend coaxial waveguide with a 45 bend angle at a center frequency of 4.0 GHz. The basic principle of the overmoded bend coaxial waveguide is introduced, and the condition of realizing high efficiency turn...
2014,
26: 013005.
doi: 10.3788/HPLPB201426.013005
Abstract:
We provided an analytical study of ultra-wideband pulse spatial power combination in time domain, and got the conclusion that the multiplex pulses which had the same polarization direction and unified waveform got the maximum output power. And based ...
We provided an analytical study of ultra-wideband pulse spatial power combination in time domain, and got the conclusion that the multiplex pulses which had the same polarization direction and unified waveform got the maximum output power. And based ...
2014,
26: 013006.
doi: 10.3788/HPLPB201426.013006
Abstract:
Based on a low refractive index material medium using metal mesh and foam material, a microwave antenna with monopole radiation was made. Antenna directionality of the traditional antenna and the antenna using low refractive index medium was studied ...
Based on a low refractive index material medium using metal mesh and foam material, a microwave antenna with monopole radiation was made. Antenna directionality of the traditional antenna and the antenna using low refractive index medium was studied ...
2014,
26: 013007.
doi: 10.3788/HPLPB201426.013007
Abstract:
The high frequency characteristics and beam-wave interaction system with four cavities in the Ka-band sheet beam relativistic klystron amplifier were simulated with three-dimension electromagnetic codes. The simulation results show that for a 500 kV,...
The high frequency characteristics and beam-wave interaction system with four cavities in the Ka-band sheet beam relativistic klystron amplifier were simulated with three-dimension electromagnetic codes. The simulation results show that for a 500 kV,...
2014,
26: 013101.
doi: 10.3788/HPLPB201426.013101
Abstract:
The light path of digital holographic microscope in line is designed to meet the requirements of high spatial resolution and big field of view which are the key parameters of the movable quantum cascade laser-terahertz (QCL-THz) digital holography im...
The light path of digital holographic microscope in line is designed to meet the requirements of high spatial resolution and big field of view which are the key parameters of the movable quantum cascade laser-terahertz (QCL-THz) digital holography im...
2014,
26: 014001.
doi: 10.3788/HPLPB201426.014001
Abstract:
The self-developed 3D PIC/MCC algorithm is described, including the algorithm flow design, collision treatment mechanism and so on. The numerical simulation of the 15~20 mA H- cusp source developed by the China Institute of Atomic Energy is researche...
The self-developed 3D PIC/MCC algorithm is described, including the algorithm flow design, collision treatment mechanism and so on. The numerical simulation of the 15~20 mA H- cusp source developed by the China Institute of Atomic Energy is researche...
2014,
26: 014002.
doi: 10.3788/HPLPB201426.014002
Abstract:
An experimental system and a numerical model are developed, which use a continuous X-ray source to determine the X-ray direct drive response of strip line in vacuum. The experimental system includes a vacuum cavity, a vacuum group and an electrometer...
An experimental system and a numerical model are developed, which use a continuous X-ray source to determine the X-ray direct drive response of strip line in vacuum. The experimental system includes a vacuum cavity, a vacuum group and an electrometer...
2014,
26: 014003.
doi: 10.3788/HPLPB201426.014003
Abstract:
In order to investigate velocity and angle effects of light flash radiation produced by hypervelocity impact, experiments have been conducted under six kinds of experimental conditions by using an optical pyrometer measurement system and a two-stage ...
In order to investigate velocity and angle effects of light flash radiation produced by hypervelocity impact, experiments have been conducted under six kinds of experimental conditions by using an optical pyrometer measurement system and a two-stage ...
2014,
26: 014004.
doi: 10.3788/HPLPB201426.014004
Abstract:
Nonlinear resonances and halo-chaos behavior of an intense charged-particle beam are discussed. The influences of the focusing field strength and the beam perveance about the intense charged-particle beam are analyzed. The beam envelope oscillations ...
Nonlinear resonances and halo-chaos behavior of an intense charged-particle beam are discussed. The influences of the focusing field strength and the beam perveance about the intense charged-particle beam are analyzed. The beam envelope oscillations ...
2014,
26: 014005.
doi: 10.3788/HPLPB201426.014005
Abstract:
For optimization design of a neutron multiplicity counter and forming a guidance of the experiment, we describe a detailed method using Monte Carlo codes to generate neutron time pulse chain for stochastic simulation. A new fitting algorithm to calcu...
For optimization design of a neutron multiplicity counter and forming a guidance of the experiment, we describe a detailed method using Monte Carlo codes to generate neutron time pulse chain for stochastic simulation. A new fitting algorithm to calcu...
2014,
26: 014006.
doi: 10.3788/HPLPB201426.014006
Abstract:
Electromagnetic radiation model which could be used to calculate the full radiation in reverberation chamber was modeled in this paper using a large number of incidence waves which uniformly distributed on a unit sphere. The Agrawal scatter voltage f...
Electromagnetic radiation model which could be used to calculate the full radiation in reverberation chamber was modeled in this paper using a large number of incidence waves which uniformly distributed on a unit sphere. The Agrawal scatter voltage f...
2014,
26: 014007.
doi: 10.3788/HPLPB201426.014007
Abstract:
Response functions of different thickness combinations are calculated by using the Geant4 code. It is concluded that the FWHM and the minimum detectable limit depend upon the thickness of polythene and aluminum layer respectively, while the peak valu...
Response functions of different thickness combinations are calculated by using the Geant4 code. It is concluded that the FWHM and the minimum detectable limit depend upon the thickness of polythene and aluminum layer respectively, while the peak valu...
2014,
26: 014008.
doi: 10.3788/HPLPB201426.014008
Abstract:
The changes of the capacitance of ferroelectric cathode under high trigger voltage are analyzed. The change is the plasma diffusion along the surface of top electrode under high trigger voltage. The model of the equivalent capacitance of ferroelectri...
The changes of the capacitance of ferroelectric cathode under high trigger voltage are analyzed. The change is the plasma diffusion along the surface of top electrode under high trigger voltage. The model of the equivalent capacitance of ferroelectri...
2014,
26: 015001.
doi: 10.3788/HPLPB201426.015001
Abstract:
A coaxial pulse voltage probe is designed to measure the signal through the input of TEM cell or GTEM cell in calibrating electromagnetic pulse(EMP) sensors. The output differential signal of the probe can be converted by numerical integration to obt...
A coaxial pulse voltage probe is designed to measure the signal through the input of TEM cell or GTEM cell in calibrating electromagnetic pulse(EMP) sensors. The output differential signal of the probe can be converted by numerical integration to obt...
2014,
26: 015002.
doi: 10.3788/HPLPB201426.015002
Abstract:
For the problem that TEM horn antenna used in the radiating-wave nuclear electromagnetic pulse (NEMP) simulator has limited ability of low frequency radiating, two basic types of TEM horn antennas (composed of plates and wires respectively) are analy...
For the problem that TEM horn antenna used in the radiating-wave nuclear electromagnetic pulse (NEMP) simulator has limited ability of low frequency radiating, two basic types of TEM horn antennas (composed of plates and wires respectively) are analy...
2014,
26: 015003.
doi: 10.3788/HPLPB201426.015003
Abstract:
Electrode erosion of gas spark gaps (GSGs) with Mo, WCu, and W main electrodes in current discharge was studied. Micrographs and erosion rates of GSG electrodes after erosion were investigated. Characteristic of electrode erosion was also analyzed. T...
Electrode erosion of gas spark gaps (GSGs) with Mo, WCu, and W main electrodes in current discharge was studied. Micrographs and erosion rates of GSG electrodes after erosion were investigated. Characteristic of electrode erosion was also analyzed. T...
2014,
26: 015101.
doi: 10.3788/HPLPB201426.015101
Abstract:
A series of magnetically driven flyer plates experiments were performed on Yang accelerator with electrode material of LY-12 alloy and stainless steel. By changing the module parameters, we can acquire the desired current waveform for launching flyer...
A series of magnetically driven flyer plates experiments were performed on Yang accelerator with electrode material of LY-12 alloy and stainless steel. By changing the module parameters, we can acquire the desired current waveform for launching flyer...
2014,
26: 015102.
doi: 10.3788/HPLPB201426.015102
Abstract:
Ultra-high vacuum (UHV) has been demonstrated as the most important condition for long lifetime GaAs photocathode. To create the UHV environment and extend the GaAs lifetime, the electron beam wall loss in DC injectors is studied in this paper. A DC ...
Ultra-high vacuum (UHV) has been demonstrated as the most important condition for long lifetime GaAs photocathode. To create the UHV environment and extend the GaAs lifetime, the electron beam wall loss in DC injectors is studied in this paper. A DC ...
2014,
26: 015103.
doi: 10.3788/HPLPB201426.015103
Abstract:
The mechanical center of beam position monitor (BPM) vacuum tune in particle accelerator can be drifted comparatively large away from the magnetic center of quadrupole under the environment of foundation vibration, temperature, thermal effects, etc. ...
The mechanical center of beam position monitor (BPM) vacuum tune in particle accelerator can be drifted comparatively large away from the magnetic center of quadrupole under the environment of foundation vibration, temperature, thermal effects, etc. ...
2014,
26: 015104.
doi: 10.3788/HPLPB201426.015104
Abstract:
The paper introduces control survey network of installation strategy in the new HIMM (Heavy Ion Medical Machine). The 3D survey network is based on laser tracker and SA (Spatial Analyzer). Nine fiducial references and two scale bars were designed to ...
The paper introduces control survey network of installation strategy in the new HIMM (Heavy Ion Medical Machine). The 3D survey network is based on laser tracker and SA (Spatial Analyzer). Nine fiducial references and two scale bars were designed to ...
2014,
26: 015105.
doi: 10.3788/HPLPB201426.015105
Abstract:
The active beam scanning system for heavy ion therapy has some advantages in some respects. In order to achieve spot scanning using pencil beam for heavy ion therapy, the control system needs to control scanning magnet. The therapy plan generates dos...
The active beam scanning system for heavy ion therapy has some advantages in some respects. In order to achieve spot scanning using pencil beam for heavy ion therapy, the control system needs to control scanning magnet. The therapy plan generates dos...
2014,
26: 015106.
doi: 10.3788/HPLPB201426.015106
Abstract:
Stringent tolerance budget is restricted on the linear accelerator (linac) parameters, such as the mean beam energy stability, peak current variation, electron bunch arrival time jitter, and the transverse beam position offset, in order to generate s...
Stringent tolerance budget is restricted on the linear accelerator (linac) parameters, such as the mean beam energy stability, peak current variation, electron bunch arrival time jitter, and the transverse beam position offset, in order to generate s...
2014,
26: 019001.
doi: 10.3788/HPLPB201426.019001
Abstract:
3D reconstruction method based on computer vision is widely used in various industries. Though the 3D reconstruction of opaque surfaces with Lambertian reflectance on which the current research is mainly concentrated is a well-studied issue, the non-...
3D reconstruction method based on computer vision is widely used in various industries. Though the 3D reconstruction of opaque surfaces with Lambertian reflectance on which the current research is mainly concentrated is a well-studied issue, the non-...
2014,
26: 019002.
doi: 10.3788/HPLPB201426.019002
Abstract:
In order to manufacture the colorful metals, the iron surface was scanned from four directions by linearly polarized and circularly polarized femtosecond lasers respectively. When the processed area which was scanned by the linearly polarized laser w...
In order to manufacture the colorful metals, the iron surface was scanned from four directions by linearly polarized and circularly polarized femtosecond lasers respectively. When the processed area which was scanned by the linearly polarized laser w...
2014,
26: 019003.
doi: 10.3788/HPLPB201426.019003
Abstract:
Long-term observation of stratospheric temperature was conducted using Rayleigh lidar, in order to understand variation regularities of the stratospheric temperature. The analysis results of the observation dataset show that, the tratospheric tempera...
Long-term observation of stratospheric temperature was conducted using Rayleigh lidar, in order to understand variation regularities of the stratospheric temperature. The analysis results of the observation dataset show that, the tratospheric tempera...
