According to some embodiments, an electrostatic particle accelerator may include an assembly having a motor and support plate; an acceleration tube; one or more stage assemblies each having an alternator coupled to a common drive shaft, a power supply coupled to one of the plurality of electrodes, and an opening to receive a portion of the acceleration tube; a pressure vessel configured to enclose the acceleration tube when the pressure vessel is fastened to the support plate; and a circulator configured to pump high pressure gas into the pressure vessel. The acceleration tube can include an ion source, an extraction assembly, and a plurality of tube segments each having a plurality of electrodes and one or more power connectors attached to one of the electrodes.

A device such as a medical device and a method for making same provides a surface modified by beam irradiation, such as a gas cluster ion beams or a neutral beam, to inhibit or delay attachment or activation or clotting of platelets.

A device such as a medical device and a method for making same provides a surface modified by beam irradiation, such as a gas cluster ion beams or a neutral beam, to inhibit or delay attachment or activation or clotting of platelets.

The present invention prevents breakage of a chip by using a simple configuration even when an extraction-electrode power source cannot apply voltage to an extraction electrode due to a malfunction, etc. This charged particle beam device is provided with: a charged particle source; an extraction electrode that extracts charged particles from the charged particle source; an extraction-electrode power source that applies voltage to the extraction electrode; an accelerating electrode for accelerating the charged particles; an accelerating power source that applies voltage to the accelerating electrode; and a diode and a resistor which are connected in series between a middle stage of the accelerating power source and the output side of the extraction-electrode power source.

A downhole tool may include a voltage multiplier within a housing. The voltage multiplier may transform input power to the downhole tool from a first voltage to a second voltage higher than the first. The downhole tool may also include multiple shielding rings surrounding at least the voltage multiplier to reduce electric field stresses within the downhole tool. Additionally, the downhole tool may include an insulator located between the shielding rings and the housing.

A downhole tool may include a voltage multiplier within a housing. The voltage multiplier may transform input power to the downhole tool from a first voltage to a second voltage higher than the first. The downhole tool may also include multiple shielding rings surrounding at least the voltage multiplier to reduce electric field stresses within the downhole tool. Additionally, the downhole tool may include an insulator located between the shielding rings and the housing.

A self-shielding accelerator is provided, which includes an accelerator assembly, a high-frequency electrode plate, a rectification and voltage multiplication assembly, a solenoid-type transformer assembly, a cooling system assembly and a shielding steel cylinder. The self-shielding accelerator further includes a steel cylinder base connected to the shielding steel cylinder. The accelerator assembly is horizontally fixed to the steel cylinder base. The rectification and voltage multiplication assembly is fixed to the steel cylinder base by a support plate. The high-frequency electrode plate and the solenoid-type transformer assembly are connected to the steel cylinder base through multiple horizontally arranged support columns. The cooling system assembly is fixed to the shielding steel cylinder. The self-shielding accelerator adopts a fully horizontal self-shielding structure, and can be seamlessly joined to the filling production line, which makes online radiation processing possible. A PET plastic bottle production line utilizing the accelerator is also provided.

A modular beam amplifier for use in generating high power beams of particles in systems such as a spacecraft propulsion engine, comprising a distributed DC power generator including a plurality of DC generator cells connected in series to each other and a plurality of power taps at different points between the DC generator cells, an ion injector producing a particle beam and a plurality of amplifier modules in series with each other and coaxial with the particle beam. Each amplifier module in the plurality of amplifier modules includes a focus lens and a plurality of annular amplifier plates. Each amplifier plate pairs with and connects to a power tap. The plurality of DC generator cells is physically arranged in a serpentine arrangement of connected rows to minimize the physical length of the distributed DC power generator.

A downhole tool may include a voltage multiplier within a housing. The voltage multiplier may transform input power to the downhole tool from a first voltage to a second voltage higher than the first. The downhole tool may also include multiple shielding rings surrounding at least the voltage multiplier to reduce electric field stresses within the downhole tool. Additionally, the downhole tool may include an insulator located between the shielding rings and the housing.

A downhole tool may include a voltage multiplier within a housing. The voltage multiplier may transform input power to the downhole tool from a first voltage to a second voltage higher than the first. The downhole tool may also include multiple shielding rings surrounding at least the voltage multiplier to reduce electric field stresses within the downhole tool. Additionally, the downhole tool may include an insulator located between the shielding rings and the housing.