Patent application number | Description | Published |
20080224064 | Charged particle accelerator - A charged particle accelerator in which discharge is less likely to occur between a charged particle source, and an extraction electrode, and an acceleration electrode without the need for increasing the capacity of a high voltage power supply for extraction. The charged particle accelerator includes a charged particle source which emits charged particles, an extraction electrode which extracts the charged particles from the charge particle source and an acceleration electrode which accelerates the extracted charged particles. A surge absorber is electrically connected between at least two of the charged particle source, the extraction electrode, and the acceleration electrode. | 09-18-2008 |
20090295269 | ELECTRON BEAM GENERATOR - An insulator of an electron beam generator is placed in vacuum, and will be electrically charged upon bombardment of electrons on the surface thereof, whereby a high electrical field is generated. In addition, when fine impurity particles are present on the surface of the insulator, such fine particles will move due to electrostatic force. These could be a cause of electrical discharge, resulting in an unstable accelerating voltage of an electron beam. An electron beam generator is provided in which an electron beam is generated from a cathode upon application of a voltage across the cathode and an anode. An insulator placed in vacuum has a ceramic substrate and a low-resistivity film formed on the surface of the substrate. The electrical volume resistivity of the low-resistivity film is less than or equal to one-hundredth of that of the substrate (see FIG. | 12-03-2009 |
20100239071 | X-RAY TUBE - The present invention provides an X-ray tube that improves and stabilizes a withstanding voltage performance and thus ensures the reliability of a product. | 09-23-2010 |
20100319964 | CAST INSULATION RESIN FOR ELECTRIC APPARATUS AND HIGH VOLTAGE ELECTRIC APPARATUS USING THE SAME - A cast insulation resin for an electric apparatus having an improved fracture toughness is provided. The cast insulation resin for an electric apparatus is a cast insulation resin used in an electric apparatus, comprising at least either a polar fine elastomer particle or a liquid elastomer having a polar molecule dispersed in an epoxy resin, and a filler formed of at least either an inorganic compound or an inorganic compound having a modified surface thereon with an organic compound. | 12-23-2010 |
20120025741 | CHARGED PARTICLE ACCELERATOR - In a charged particle accelerator, voltage of several tens of kV is applied between accelerating electrodes. In such a case, electric discharge is sometimes generated between the accelerating electrodes. In the charged particle accelerator, part or entirety of the accelerating electrodes is coated with an electric discharge suppressing layer made of ceramics or alloy having a high melting point as compared with metal. When impurity fine particles are accelerated by an electric field and collide with the electrodes, the electric discharge suppressing layer made of ceramics or alloy prevents metal vapor from being easily generated from the electrodes and an ionized plasma from being easily produced, thus suppressing electric discharge between the electrodes. | 02-02-2012 |