5 results about "Electron bombardment" patented technology

The application discloses an escape electron monitoring method, device and equipment for a tokamak fusion system and a readable storage medium, and relates to the technical field of optical fiber damage positioning. The method comprises the following steps: at least one sensing optical fiber is arranged on the outer surface of the cladding and / or shielding layer of the tokamak device in a poloidal-toroidal integrated winding mode, so that the single sensing optical fiber is continuously distributed on the toroidal path around the tokamak torus and the poloidal path along the height direction of the torus, and a two-dimensional distributed sensing network covering a preset monitoring area is formed; a probe light signal is injected into the incident end of the sensing optical fiber, and a transmission light signal is detected in real time at the outgoing end; whether the sensing optical fiber is irradiated and damaged is judged according to the power attenuation and / or transmission performance change of the transmission light signal; when the transmission light signal is detected to be abnormal, the damage area caused by the escape electron bombardment is positioned according to the overlapping position of the toroidal and poloidal laying paths corresponding to the sensing optical fiber with the abnormality.

The application discloses a damage monitoring positioning method and device for a tokamak fusion reactor, and relates to the technical field of damage monitoring. The method comprises the following steps: winding at least one optical fiber sensitive to ionizing radiation on a surface to be monitored of a tokamak torus, so that the optical fiber is arranged along the toroidal direction to form a toroidal optical fiber path and is arranged along the poloidal direction to form a poloidal optical fiber path; injecting a probe light signal into an input end of the optical fiber; collecting a transmitted light signal of an output end of the optical fiber, and monitoring the light intensity attenuation of the transmitted light signal in real time; judging whether the surface to be monitored is damaged by escaping electron bombardment according to whether the light intensity attenuation exceeds a preset threshold; and when it is judged that the damage occurs, determining the damage position according to the toroidal position information corresponding to the toroidal optical fiber path where the light intensity attenuation occurs and the poloidal position information corresponding to the poloidal optical fiber path. The above scheme greatly reduces the system cost and the laying difficulty.

An oxide decomposition apparatus can include: a housing having a material inlet configured to receive oxide material into the housing, the oxide material including oxygen and an oxide base material; an oxide material holder in the housing and configured to hold the received oxide material; an oxide material heater configured to heat the oxide material held in the oxide material holder; an electron beam gun configured to bombard the heated oxide material with electrons in the housing so that the oxide material is decomposed into oxygen and the oxide base material; and an oxygen collector configured to collect the oxygen in the housing. A method of decomposing an oxide material containing oxygen and an oxide base material can include: heating the oxide material; bombarding the heated oxide material with electrons from an electron gun so that the heated oxide material is decomposed into oxygen and the oxide base material.

The embodiment of the application discloses an anti-electron bombardment folded waveguide slow wave circuit, a traveling wave tube and a method, which comprise a slow wave circuit with multi-periodicity formed by a plurality of upper grids and a plurality of lower grids staggered with each other; the slow wave circuit comprises a straight waveguide section, a curved waveguide connecting section and an electron beam channel; characterized in that the curved waveguide connecting section comprises an inner circular arc boundary C in , the inner circular arc boundary C in penetrates the electron beam channel in the wide edge direction of the straight waveguide section. The application provides a folded waveguide slow wave circuit structure, which eliminates the weak point of the conventional folded waveguide slow wave circuit in the high-efficiency slow wave circuit design, and greatly improves the anti-electron bombardment capability of the slow wave circuit.

A Time-of-Flight (TOF) mass selector, a gas cluster ion beam production apparatus, and a production method are disclosed. The TOF mass selector includes a mass selection module, a compensation electrode, and a voltage pulse control system. By applying a compensation voltage to the compensation electrode, external electric field interference is shielded, balancing the electric field inside the TOF mass selector. The gas cluster ion beam production apparatus and method incorporate the TOF mass selector, using time-limited high-voltage pulses to vertically deflect the ion beam. The amount of ion deflection is related to the ion mass, and the selection of ions of different masses is achieved by adjusting the timing of the high-voltage pulses. The gas cluster ion beam generation is based on an adiabatic expansion and condensation mechanism to generate neutral clusters. After electron bombardment ionization, kinetic energy conversion is completed in a high-voltage electric field, and the TOF mass selector achieves high-resolution mass filtering of a single energy level based on the mass-to-charge ratio, thereby outputting a high-energy cluster ion beam with excellent monoenergetic properties.