Combined accelerating structure

An accelerating structure and the same technology, applied in nuclear science and nuclear fields, can solve the problems of increasing the cost and length of the accelerator, the matching imbalance between the horizontal and vertical beams, and the reduction of the beam transmission efficiency, so as to reduce the overall size and cost.

Inactive Publication Date: 2010-06-02
PEKING UNIV
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Problems solved by technology

This not only increases the cost and length of the entire accelerator, but also often leads to a serious decrease in the overall beam transmission efficiency due to the imbalance between the horizontal and vertical beam matching.

Method used

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  • Combined accelerating structure
  • Combined accelerating structure
  • Combined accelerating structure

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Embodiment Construction

[0015] The present invention will be further described below through specific examples.

[0016] as per figure 1 The structure shown combines the RFQ and the SFRFQ and places them inside a resonant cavity. At the same time, set the central axes of RFQ and SFRFQ on the same line.

[0017] RFQ and SFRFQ adopt the same support method, that is, RFQ and SFRFQ are respectively supported by support part 1 and support part 2, and support part 1 and support part 2 are the same. The supporting part 1 and the supporting part 2 each include two centrally symmetrical parts, each part includes a short arm and a long arm, and each of the four arms of the two parts is used to fix the first stage of the quadrupole field.

[0018] The specific parameters of RFQ, SFRFQ and resonant cavity are shown in Table 1 below, where the resonant frequencies of RFQ and SFRFQ are the same.

[0019] Table 1.

[0020]

[0021] In this combination structure, firstly, the ion beam is horizontally matched,...

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Abstract

The invention discloses a combined accelerating structure belonging to the fields of nuclear science and nuclear technology. The combined accelerating structure comprises a radio-frequency quadrupole field part and a separation function radio-frequency quadrupole field part. The radio-frequency quadrupole field part and the separation function radio-frequency quadrupole field are directly connected in the same resonant cavity and center lines of the radio-frequency quadrupole field part and the separation function radio-frequency quadrupole field are coaxial. The radio-frequency quadrupole field part and the separation function radio-frequency quadrupole field adopt the same support mode. The invention not only can save another set of high-powder transmitter and relevant high-frequency control systems so that the total high-frequency power is greatly lower than the summation of the power of two transmitters, but also save matched elements of a high-power electromagnetic lens and the like, so that the overall dimension and the cost of an accelerator can be reduced; in addition, the overall delivery efficiency of beam current can be improved because of avoiding the unbalance of longitudinal and transverse matching of the beam current.

Description

technical field [0001] The invention relates to a combined acceleration structure, in particular to a resonance-cavity structure of a combined radio frequency quadrupole field accelerator and a separate action radio frequency quadrupole field accelerator. It belongs to the field of nuclear science and nuclear technology. Background technique [0002] The RFQ (Radio Frequency Quadrupole, RFQ for short) accelerator is a key component widely used in the low-energy end of the high-current linear accelerator. However, with the increase of the accelerated ion energy, the acceleration efficiency of conventional RFQ accelerators decreases significantly. Experiments have proved that the acceleration efficiency of the Separated Function Radio Frequency Quadrupole (SFRFQ) invented by Peking University at the high-energy end of the injector is significantly higher than that of the conventional RFQ, but the latter still needs to be used as the injector. Please refer to the Chinese paten...

Claims

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Application Information

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IPC IPC(8): H05H9/00H05H7/22
Inventor 王智陈佳洱陆元荣郭之虞
Owner PEKING UNIV
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