摘要:
A multi-energy frequency-multiplying particle accelerator and a method thereof are disclosed, an accelerator comprises a pulse power generation unit for generating N pulse signals with different power levels, N is equal to or greater than 2; N microwave power generation units for, under the control of a control signal, generating N microwaves with different energy levels based on said N pulse signals, respectively; a power mixing unit having N entrances and one exit and for inputting a corresponding microwave among said N microwaves from each of said N entrances and outputting said N microwaves from said one exit; a particle beam generation unit for generating N particle beams in synchronization with said N microwaves; and an accelerating unit for using said N microwaves to accelerate said N particle beams, respectively.
摘要:
Disclosed is a device and method for generating X-rays having different energy levels as well as a material discrimination system thereof. The method comprises the steps of: generating a first pulse voltage, a second pulse voltage, a third pulse voltage and a fourth pulse voltage, generating a first electron beam having a first beam load and a second electron beam having a second beam load, respectively, based on the first pulse voltage and second pulse voltage, generating a first microwave having a first power and a second microwave having a second power, respectively, based on the third pulse voltage and the fourth pulse voltage, accelerating the first and second electron beams respectively using the first and second microwave to obtain the accelerated first electron beam and the second electron beam, hitting a target with the accelerated first electron beam and the second electron beam to generate a first X-ray and a second X-ray having different energy levels. The X-rays having different energy levels generated by the present invention can be used in the non-destructive inspection for large-sized container cargo at places such as Customs, ports and airports, and in realizing the material discrimination for the inspected object.
摘要:
Disclosed is a device and method for generating X-rays having different energy levels as well as a material discrimination system thereof. The method comprises the steps of: generating a first pulse voltage, a second pulse voltage, a third pulse voltage and a fourth pulse voltage, generating a first electron beam having a first beam load and a second electron beam having a second beam load, respectively, based on the first pulse voltage and second pulse voltage, generating a first microwave having a first power and a second microwave having a second power, respectively, based on the third pulse voltage and the fourth pulse voltage, accelerating the first and second electron beams respectively using the first and second microwave to obtain the accelerated first electron beam and the second electron beam, hitting a target with the accelerated first electron beam and the second electron beam to generate a first X-ray and a second X-ray having different energy levels. The X-rays having different energy levels generated by the present invention can be used in the non-destructive inspection for large-sized container cargo at places such as Customs, ports and airports, and in realizing the material discrimination for the inspected object.
摘要:
A multi-energy frequency-multiplying particle accelerator and a method thereof are disclosed in order to overcome the drawbacks of the existing accelerator, such as single energy level, beam current and operating frequency limited by a single power source. The accelerator comprises a pulse power generation unit for generating N pulse signals with different power levels, N is equal to or greater than 2; N microwave power generation units for, under the control of a control signal, generating N microwaves with different energy levels based on said N pulse signals, respectively; a power mixing unit having N entrances and one exit and for inputting a corresponding microwave among said N microwaves from each of said N entrances and outputting said N microwaves from said one exit; a particle beam generation unit for generating N particle beams in synchronization with said N is microwaves; and an accelerating unit for using said N microwaves to accelerate said N particle beams, respectively. Since the multi-energy frequency-multiplying particle accelerator of the present invention can output alternately particle beams of different energy levels and thus has improved operating frequency and multiplied power, it will find a wider application prospect in the field of radiograph imaging, radioactive medicine and radiation processing industry.
摘要:
The present invention discloses a standing wave linear accelerator, comprising: a microwave device configured to generate microwave; an electron beam emitting device configured to emit electron beam; an accelerating device configured to receive the microwave generated by the microwave device and form a microwave electric field, to accelerate electron beams generated from the electron beam emitting device and undertake the accelerated electron beam targeting to emit X ray beam; a synchronous device generating synchronous pulse signal; and a quick beam emitting device receiving the synchronous pulse signal generated by the synchronous device, wherein the microwave device runs and generates microwave in advance before the operation of the electron beam emitting device based on the synchronous pulse signal, and the quick beam emitting device drives the electron beam emitting device to emit electron beam after power of the microwave generated by the microwave device reaches stable state, so that the accelerating device emits X ray beam. In the accelerator, the microwave system and the electron beam emitting device do not work at the same time, and the accelerator electron beam emitting system is started only when the AFC is put into operation and runs stably.
摘要:
The present invention discloses a standing wave linear accelerator, comprising: a microwave device configured to generate microwave; an electron beam emitting device configured to emit electron beam; an accelerating device configured to receive the microwave generated by the microwave device and form a microwave electric field, to accelerate electron beams generated from the electron beam emitting device and undertake the accelerated electron beam targeting to emit X ray beam; a synchronous device generating synchronous pulse signal; and a quick beam emitting device receiving the synchronous pulse signal generated by the synchronous device, wherein the microwave device runs and generates microwave in advance before the operation of the electron beam emitting device based on the synchronous pulse signal, and the quick beam emitting device drives the electron beam emitting device to emit electron beam after power of the microwave generated by the microwave device reaches stable state, so that the accelerating device emits X ray beam. In the accelerator, the microwave system and the electron beam emitting device do not work at the same time, and the accelerator electron beam emitting system is started only when the AFC is put into operation and runs stably.
摘要:
A high-voltage automatic changeover switch, includes a support and a control circuit board mounted on the support. In one embodiment, the support includes an insulating frame, four high-voltage contacts mounted on each of two opposite plates of the insulating frame, four high-voltage contacts on the same plate being pair-to-pair arranged, the high-voltage contacts at the corresponding positions on the two plates being pair-to-pair arranged. A motor is provided on the support, and when switching the high voltages, the control circuit board controls the rotation of the motor to automatically switch the connection relation between the high-voltage contact pairs. Embodiments of the switch have a voltage-resistance of above 50 KV, allowing a pulse current of not less than 500 A to pass through, and good contact performance and a high stability. In one aspect, the high-voltage automatic changeover switch performs automatic switching of power source high voltages in an accelerator system, so that the accelerator obtains electron beams with different energies, thus allowing an expanded scope of application of the accelerator, including updating and upgrading of non-destructive testing systems, custom container inspection systems, and high-energy CT systems.
摘要:
An irradiating device and a method for controlling it are provided. The device comprises an electron accelerator and a scanning box connected to the electron accelerator, wherein the scanning box is provided with a target, an electron beam exit window positioned at left or right side of the target and a scanning magnet. The device integrates the functions of both the existing irradiating device outputting electron beams and those outputting X-rays. When the scanning magnet is in operation, the irradiating device outputs electron beams; and when the scanning magnet is not in operation, the irradiating device outputs X-rays. Therefore, the device is capable of outputting two radiation sources so as to meet requirements for radiation-processing articles with different sizes.
摘要:
An irradiating device and a method for controlling it are provided. The device comprises an electron accelerator and a scanning box connected to the electron accelerator, wherein the scanning box is provided with a target, an electron beam exit window positioned at left or right side of the target and a scanning magnet. The device integrates the functions of both the existing irradiating device outputting electron beams and those outputting X-rays. When the scanning magnet is in operation, the irradiating device outputs electron beams; and when the scanning magnet is not in operation, the irradiating device outputs X-rays. Therefore, the device is capable of outputting two radiation sources so as to meet requirements for radiation-processing articles with different sizes.