45 results about "Neutral beam injection" patented technology

The invention relates to a micro-nano processing method based on injection of focused ion beams and etching of auxiliary gas, which comprises the following steps: placing a substrate to be processed in a focused ion beam sample chamber; observing appearance of the substrate through an ion beam imaging system; carrying out ion injection and processing on the substrate by using the focused ion beams according to a target processing pattern; and carrying out micro-nano processing on an ion injected area by in situ using a method of auxiliary etching of focused ion beam xenon fluoride gas in the focused ion beam sample chamber. The method is stable and reliable, not only can remarkably improve preparation efficiency, but also improves processing flexibility, can effectively reduce influence of processing re-deposition, and remarkably improves processing accuracy and processing quality.

The invention discloses a control bus system of a neutral beam injector system. The control bus system comprises a bus backboard, a controller card, an equipment card, an expansion card, a power supply module, a case, and other assemblies, wherein the bus backboard is arranged in the middle of the case, a system control bus is fixed on the bus backboard; the controller card, the equipment card and the expansion card are inserted on the bus backboard; the controller card and the equipment card are subjected to mutual operation and data exchange through the system control bus of the bus backboard, the expansion card is used for expanding the system control bus to a plurality of cases by virtue of an expansion cable; the power supply module provides a power supply for the controller card and the equipment card. The control bus system realizes integration of functional board cards by virtue of the control bus backboard by adopting a modular design, and is compact in structure; the anti-electromagnetic interference is easily improved; the difficulties of excessive interlocking protection wiring and incapability of performing online configuration on interlocking protection logics in the neutral beam injector system are solved; the control bus system has a hot plug function, and can be widely applied to the fields of field real-time control, computer control, industrial automation and the like.

The invention discloses a weak signal detection and transmitting module of a neutral beam injector control system. The module comprises an FPGA control module and a light power generation module, wherein the FPGA control module is in control connection with a weak signal processing module, an analog signal acquisition module and a bus communication module; a signal output end of the weak signal processing module is connected with a signal input end of the analog signal acquisition module; and the FPGA control module is in communication connection with a system bus through the bus communication module. The module can intelligently adjust the weak signal detection and transmitting process to achieve high-speed transmission and high-voltage isolation of weak signals.

The invention discloses an analog-signal interlocking protective controller used for a neutral-beam injector. The controller includes an analog-signal input module, a threshold setting module, a control bus, a communication module, an interlocking protective logic control module and a control-signal output module. An FPGA is adopted as a main controller of the analog-signal interlocking protective controller to receive external commands and manually set commands of the communication module and through control of the analog-signal input module and the threshold setting module, high-speed and reliable output of interlocking protective control signals of a hardware level is realized. The analog-signal interlocking protective controller used for the neutral-beam injector is capable of solving problems of high-speed interlocking protection and remote control, in which analog signals on a fusiondevice take part so that remote and local reliable control of interlocking protective control logic is realized. The controller is flexible to apply and is also widely applicable to other control application fields of interlocking protective control which has high analog-signal protective requirements.

Systems and methods that facilitate forming and maintaining FRCs with superior stability as well as particle, energy and flux confinement and, more particularly, systems and methods that facilitate forming and maintaining FRCs with elevated system energies and improved sustainment utilizing neutral beam injection and high harmonic fast wave electron heating.

The invention discloses a neutron beam injector ion source field reverse configuration plasma radio frequency driver, which comprises a vacuum cavity. Outside the vacuum cavity, two coils arranged in parallel are used as a radio frequency power supply antenna. Each coil consists of windings with 1.5 turns or more. The distance between the two coils is larger than the maximum gap between any windings. The two coils are connected with the same phase RF current and the magnetic fields generated by the coils share the same direction, and a metal Faraday cup is arranged at the inner side of the vacuum cavity. The present invention overcomes the shortcomings of the conventional plasma radio frequency driver of neutron beam injector ion source, which uses a uniform magnetic field confinement plasma mode. The driver of the invention utilizes an alternating non-uniform magnetic field and the driven self-magnetic field of the annular plasma current and establishes a field reversal configuration plasma confinement mode, therefore, preventing the Faraday cup from being in direct contact with the high temperature plasma and benefiting the temperature rise and the constraint of the plasma.

The invention belongs to a magnetic confinement plasma diagnostic device, and particularly relates to a high-precision magnetic field inclination angle measuring system applied to a magnetic confinement fusion device. The high-precision magnetic field inclination angle measuring system comprises a neutral beam injection system which is installed in a fusion plasma. The external part of the fusion plasma is provided with a front-end optical lens which is connected with an optical modulation system. The optical modulation system is connected with gratings via optical fibers. The gratings are opposite to optical fiber arrays and a photoelectric conversion system. The optical fiber arrays and the photoelectric conversion system are connected with a phase-locked amplifier. Meanwhile, the optical modulation system is connected with the phase-locked amplifier so as to provide reference signals to the phase-locked amplifier. The phase-locked amplifier is connected with a data acquisition and control computer. The advantages of the high-precision magnetic field inclination angle measuring system are that reliability is great and measuring precision is quite high so that the high-precision magnetic field inclination angle measuring system can be applied to measurement of a plasma magnetic field deflection angle under the weak stark effect and can also be applied to high-precision and high-speed measurement of other linearly polarized light polarization direction.

Methods and apparatus for forming substrates having magnetically patterned surfaces is provided. A magnetic layer comprising one or more materials having magnetic properties is formed on the substrate. The magnetic layer is subjected to a patterning process in which selected portions of the surface of the magnetic layer are altered such that the altered portions have different magnetic properties from the non-altered portions without changing the topography of the substrate. A protective layer and a lubricant layer are deposited over the patterned magnetic layer. The patterning is accomplished through a number of alternative processes that expose substrates to energy of varying forms.

The invention relates to the technical field of high-power high-current ion source and neutral beam injection heating, and particularly relates to a long-pulse high-power ion source electrode grid cooling water circuit and vacuum sealing structure. The structure is formed by assembling multiple layers of water-cooled electrode grids and a support flange thereof in parallel. Each layer of water-cooled electrode plate is composed of two water-cooled electrode grids of the same structure lapped together. The structure further comprises cooling water circuits inside the support flange and cooling water circuits inside the water-cooled electrode grids. By using the structure, electrodes can be cooled instantaneously, and the uniformity of electric field distribution between electrode grid plates is ensured. Moreover, a water pipe connecting the electrodes and the flange is omitted, a connecting structure of the water pipe and the electrodes is omitted, space is saved, the size of the flange and the overall vacuum cavity including an insulating cavity is reduced, and the processing cost is lowered. The technical scheme is especially suitable for a compact ion source first electrode water circuit structure.

The invention discloses a neutral beam injection high voltage power supply output mechanical protection switch which comprises motors, a metal connecting rod, a metal shorting bar, relays, an epoxy board, an epoxy rod, a metal terminal strip, a positive and negative connecting wire metal terminal, wherein the metal connecting rod and the metal shorting bar are moving parts of the switch, and are connected with driving motors through the connection of the epoxy rod; the two independent driving motors control the opening and closing of the moving parts through insulating bars; and the control signals of the two motors are provided by the two independent relays. The short-circuiting and disconnection operations of a short-circuiting switch on the output end of a high voltage power supply are realized through the second motor, and the closing and disconnection operations of the short-circuiting switch on the output of the high voltage power supply and an electrical connection switch of a neutral beam injection system are realized through the first motor; the voltage class of the electrical isolation between the both achieves 100kV through the motors and the insulating bar of the moving parts of the switch; and two functions of electrical isolation switch and short-circuiting switch are combined integrally, so that the switch is convenient to control, and the efficiency of experiments and debugging is improved.

The invention discloses a neutral beam injector self-adaption experiment operation control configuration method. The method comprises a pulse signal configuration method, a time sequence pulse width configuration method and an amplitude waveform configuration method, self-adaption configuration is performed by designing a set of time sequence control parameters generating algorithms according to the experiment requirements, the NBI system experiment operation key parameter modification demand is met, and operation is simple, reliable and efficient. The neutral beam injector self-adaption experiment operation control configuration method can be widely applied to the fields of field real-time control, computer control, industrial automation and the like.

The invention belongs to the technical field of a physical structure design method for a high-power neutral beam injection heating system of a magnetic confinement fusion apparatus, and particularly relates to an analysis program package for concept design of a neutral beam injection heating system injector in magnetic confinement fusion engineering. Basic layout and sizes of core parts of the injector are adjusted through a man-machine interactive interface compiled by a script language; and parameters such as geometric layout parameters, beam power transmission efficiency, part intercepted and captured beam power and the like necessary for injector design are analyzed and calculated according to input parameters. Program interfaces are all written directly by the script language; running is simple; only Matlab needs to run; NBIcao is input to a command window, and an Enter key is pressed, so that a first running interface of a program appears; and other running interfaces are given by command buttons arranged on the interfaces.