Abstract: A new type of piezoelectric transducer with compression/shear sense is developed and was successfully tested for measuring three dimension accelerations in shock and vibration experiment.
A 2MeV thermionic cathode test stand was established to meet the requirement of the large area thermionic cathode system.A 100ram in diameter type'B'thermionic dispenser cathode was developed.A 1000A emission ...A 2MeV thermionic cathode test stand was established to meet the requirement of the large area thermionic cathode system.A 100ram in diameter type'B'thermionic dispenser cathode was developed.A 1000A emission current was produced at the voltage of the diode about 1.8MV,the pulse width about 90ns(FWHM),and the cathode temperature about 1350℃.The emission current density is 12A/cm^2.The results indicate that a large area thermionic cathode which produces high quality and high current electron beams is visible.The results also indicate that the ability of cathode emission relies on the diode-vacuum and cathode-temperature.展开更多
This paper describes the subsystems commissioning process of Dragon-Ⅰ which include the injector,the pulsed power system,the transport system and the Bremsstrahlung target.The experimental results and further work ar...This paper describes the subsystems commissioning process of Dragon-Ⅰ which include the injector,the pulsed power system,the transport system and the Bremsstrahlung target.The experimental results and further work are presented.展开更多
The cell circuit design and test of inductive adder pulse generator for kicker magnet are presented in the paper.The 3.3kV IGBT,a large dimension nanocrystalline core and a 2.5kV 50uF energy storage capacitor are used...The cell circuit design and test of inductive adder pulse generator for kicker magnet are presented in the paper.The 3.3kV IGBT,a large dimension nanocrystalline core and a 2.5kV 50uF energy storage capacitor are used. The multi-channel trigger IGBT driver board is designed.IGBT failures under short circuit condition and protection scheme are explored.The multi-cell prototype is designed.The waveforms of experiments are presented.It turns out that the rise and fall time of the output pulse is fast and the pulse width is adjustable.The maximum current of pulse reaches 2kA.It satisfies the higher requirement of beam injection technology.展开更多
文摘Abstract: A new type of piezoelectric transducer with compression/shear sense is developed and was successfully tested for measuring three dimension accelerations in shock and vibration experiment.
文摘A 2MeV thermionic cathode test stand was established to meet the requirement of the large area thermionic cathode system.A 100ram in diameter type'B'thermionic dispenser cathode was developed.A 1000A emission current was produced at the voltage of the diode about 1.8MV,the pulse width about 90ns(FWHM),and the cathode temperature about 1350℃.The emission current density is 12A/cm^2.The results indicate that a large area thermionic cathode which produces high quality and high current electron beams is visible.The results also indicate that the ability of cathode emission relies on the diode-vacuum and cathode-temperature.
文摘This paper describes the subsystems commissioning process of Dragon-Ⅰ which include the injector,the pulsed power system,the transport system and the Bremsstrahlung target.The experimental results and further work are presented.
文摘The cell circuit design and test of inductive adder pulse generator for kicker magnet are presented in the paper.The 3.3kV IGBT,a large dimension nanocrystalline core and a 2.5kV 50uF energy storage capacitor are used. The multi-channel trigger IGBT driver board is designed.IGBT failures under short circuit condition and protection scheme are explored.The multi-cell prototype is designed.The waveforms of experiments are presented.It turns out that the rise and fall time of the output pulse is fast and the pulse width is adjustable.The maximum current of pulse reaches 2kA.It satisfies the higher requirement of beam injection technology.
