A remote diagnostic monitoring of operating states for physical components of a particle accelerator system includes generating, by at least one processor, a component hierarchy corresponding to a physical arrangement of one or more physical components of a particle emitting system and including corresponding operating indicators of operating states of the physical components, identifying, by the at least one processor, a faulted physical component among the physical components, identifying, by the at least one processor, one or more fault path components among the physical components, the fault path components corresponding to a portion of the physical arrangement associated with the faulted physical component, and modifying, by the at least one processor, the operating indicators of the fault path components to fault state indicators.

Disclosed is an escalator sterilization device attached close to a handrail of an escalator and formed by a base and a sterilization module. The sterilization module has a cover in an arc shape, so that the cover can be attached closed to a surface of a handrail of the escalator, and the inner wall of the cover has plural electrode coils electrically coupled to a power supply device in the base. After the power supply device is conducted by an electric power, a high voltage power is generated to excite the electrode coils to form plasma, and the plasma is used to destroy polymorphic bacteria and microorganisms, so that the sterilization module can eliminate the bacteria on the surface of the handrail of the escalator and provide a deodorant effect.

The present disclosure relates to an isotope production apparatus. In one implementation, the apparatus may include a cyclotron for producing a particle beam, a shielding surrounding the cyclotron, and a target system within the shielding. The shielding may include a first layer having a hydrogen content of at least 100 kg/m.sup.3 and a second layer having at least 4900 kg/m.sup.3 of material having an atomic number equal to or higher than 26, and at least 29 kg/m.sup.3 of hydrogen.

There is provided a circular accelerator that accelerates a beam of charged particles circulating in a magnetic field such that a closed orbit for each energy of the beam is eccentric. The circular accelerator includes a beam extraction port for extracting beams of different energies from the closed orbit, a first bending magnet and a second bending magnet that bend the beam extracted from the beam extraction port, and a control unit that controls magnetic field strengths of the first bending magnet and the second bending magnet in accordance with the energy of the extracted beam. When the energy of the extracted beam is a designed maximum energy of the circular accelerator, the control unit excites both the first bending magnet and the second bending magnet to bend the beam.

An accelerator 4 includes a circular vacuum container including circular return yokes 5A, 5B. An injection electrode 18 is disposed closer to an inlet of a beam extraction path 20 in the return yoke 5B than a central axis C of the vacuum container. Magnetic poles 7A to 7F are radially disposed from the injection electrode 18 at the periphery of the injection electrode 18 in the return yoke 5B. Recessions 29A to 29F are disposed alternately with the magnetic poles 7A to 7F in the circumferential direction of the return yoke 5B. In the vacuum container, a concentric trajectory region, in which multiple beam turning trajectories centered around the injection electrode 18 are present, is formed, and an eccentric trajectory region, in which multiple beam turning trajectories eccentric from the injection electrode 18 are present, is formed around the region.

Systems and methods are provided for redirecting electromagnetic radiation around an object. A first assembly, including a first interior wall and a first exterior wall enclosing a propellant gas, substantially encloses the object. A first control system is configured to energize the propellant gas to provide a first volume of plasma and control an electron number density of the first volume of plasma. The electron number density of the first volume of plasma is selected to minimize reflection of the electromagnetic radiation from the first exterior wall. A second assembly includes a second interior wall and a second exterior wall enclosing a propellant gas and is substantially concentric with the first assembly and substantially encloses the object. A second control system is configured to energize the propellant gas to provide a second volume of plasma and control an electron number density of the second volume of plasma.

For the purpose of providing a transportable linear accelerator system which can restrain entering of losing ion beams deviated from a trajectory therefor, to thereby efficiently achieve reduction in radioactivity at low cost, and a transportable neutron source equipped therewith, a transportable linear accelerator system is configured to be provided with a beam chopper just before an inlet of a post-accelerator, thereby to cut off, from the proton beams pre-accelerated by a pre-accelerator, uncontrolled proton beams, and thus to radiate only the controlled proton beams to the post-accelerator, so that the proton beams are prevented from hitting an acceleration electrode, etc. of the post accelerator.

Beam current variation system for a cyclotron, arranged in the inner center of the cyclotron, downstream from the ion source generating the charged particle beam, the system comprising a deflector system powered by a voltage and a collimator. The beam is dumped in the collimator, if the deflector system (10; 20, 21) is not powered, and the beam is switched on by powering the deflector system with a voltage.

Beam current variation system for a cyclotron, arranged in the inner center of the cyclotron, downstream from the ion source generating the charged particle beam, the system comprising a deflector system powered by a voltage and a collimator. The beam is dumped in the collimator, if the deflector system (10; 20, 21) is not powered, and the beam is switched on by powering the deflector system with a voltage.

A charged particle accelerator for which assembly work can be simplified is provided, and a method for building the same is provided.

In a vacuum-duct joint-portion 10: a male screw 21 is engraved on an outer peripheral surface of a joint 11; a contact surface 25 to be brought into contact with an annular seal 12 is formed at the end of the inner peripheral surface 22 of the joint 11; a pressing surface 26 for pressing the annular seal 12 toward the contact surface 25 of the joint 11A is formed on the ring 15; an abutting surface 28 that abuts on the ring 15 is formed on the nut 16; and a female screw 27 to be screwed to the male screw 21 of the joint 11A is engraved on the inner peripheral surface of the nut 16.