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.
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:
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:
In the field of communications, a method, a system, and a device for searching for information, and a method for registering a vertical search engine are provided. The method for searching for information includes the following steps. A first search request sent by a user is received. A logic node is determined according to attribute information in the first search request. A vertical search engine selected by the logic node for the user is received. A second search request is sent to the vertical search engine. The method for registering the vertical search engine includes the following steps. A mobile search server receives and saves first registration information sent by the vertical search engine. Location information of a logic node corresponding to the vertical search engine is determined according to the first registration information. Second registration information is sent to the logic node according to the location information.
摘要:
A method, an apparatus, and a system for mobile search are provided. The method for mobile search includes: receiving a search request, where the search request carries keyword information to be searched for, and an instant interest model and a long-term interest model acquired by a search application server; calculating a relevance score value of each member engine according to the search request, meta index information of the member engine, the instant interest model, and the long-term interest model; and selecting one or more member engines according to the relevance score value to search for the keyword information. The searching for the keyword information may integrate an instant interest model and a long-term interest model of a user, so as to provide users with personalized and highly accurate search result information that meets demands.
摘要:
A method for associating content with a category is disclosed. The method includes the steps of: receiving a request for associating content with a category, where the request carries a content reference; obtaining a category according to the content reference, and associating the content reference with the category. A system and device for associating content with a category are also disclosed by the embodiments of the invention. With the embodiments of the invention, the association request function provides a content reference in an association creating request; the association management function obtains a category according to the content reference, and associates the content reference with the category. In this way, it is possible to associate the content with the category based on only the content information when there is a lack of a category. Therefore, the existing association information may be fully utilized to optimize association relationship and save data flow.
摘要:
A search server interconnection method, a search server, and a system for mobile search are disclosed The method includes: sending an information list of a first group of member engines to a search server; receiving an information list of a second group of member engines, where the information list of the second group of member engines is returned by the search server; and sending meta-index information of member engines in the information list of the second group of member engines to the search server. In the present invention, an effective mobile search service across search servers is realized.
摘要:
The present invention discloses a method, a system, and an advertisement server for disseminating advertisements by means of presence information, so as to solve the problem that the advertisement dissemination by means of a presence system can not be recorded effectively in the prior art. The method disclosed in the present invention comprises: subscribing to, by the watcher, the presence information of the presentity; publishing, by the presentity, the presence information with advertisement information and presentity ID to the presence server; notifying, by the presence server, the watcher of the presence information with presentity ID; sending, by the watcher, the presentity ID to the advertisement server; and, recording, by the advertisement server, the presentity ID. Because the advertisement server records the presentity ID, it knows how the watcher obtains the advertisement, and thereby can record the advertisement dissemination effectively.