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Method and system for generating quasi-sine wave pulse electron beam and readable medium

A technology of pulsed electron beams and quasi-sine waves, which is applied in the direction of electrical components, accelerators, magnetic resonance accelerators, etc., can solve problems such as the inability to overcome the impact of ion beam life, and achieve the effect of solving ion beam loss

Active Publication Date: 2021-04-06
INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the ion beam in the ion storage ring has a Gaussian distribution shape, the uniformly distributed pulsed electron beam cannot overcome the impact of ion loss at the edge of the ion beam cluster on the ion beam lifetime when interacting with the Gaussian distributed ion beam

Method used

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  • Method and system for generating quasi-sine wave pulse electron beam and readable medium
  • Method and system for generating quasi-sine wave pulse electron beam and readable medium
  • Method and system for generating quasi-sine wave pulse electron beam and readable medium

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Embodiment 1

[0032] This embodiment discloses a method for generating quasi-sine wave pulsed electron beams, comprising the following steps:

[0033] S1 calculates the frequency of the sine wave voltage for modulating the electron beam in the electron cooling device according to the cyclotron frequency of the ion beam in the ion storage ring.

[0034] The cyclotron frequency f of the ion beam in the ion storage ring i Obtained using the following formula:

[0035]

[0036] Among them, β is the relativistic factor, C is the speed of light 3×10 8 m / s, L is the perimeter of the storage ring.

[0037] For example, if the perimeter of an ion storage ring is 161 meters, the cyclotron frequency of an ion beam with an energy of 7 MeV / u is 0.227 MHz. Due to the different energies of ions injected into the ion storage ring, the cyclotron frequency also has a distribution range. For ion beams with a cyclotron frequency of 0.2MHz to 1.6MHz, electron beams with quasi-sine wave distribution can form...

Embodiment 2

[0060] Based on the same inventive concept, this embodiment discloses a system for generating quasi-sine wave pulsed electron beams, including:

[0061] The frequency calculation module is used to calculate the frequency of the sinusoidal voltage for modulating the electron beam in the electron cooling device according to the cyclotron frequency of the ion beam in the ion storage ring;

[0062] The electron bunch generation module is used for adjusting the electron beam according to the sine wave voltage corresponding to the frequency obtained in the frequency calculation module to generate quasi-sine wave pulse electron bunches;

[0063] The ion beam waveform acquisition module is used to acquire the waveform diagram of the ion beam in the ion storage ring;

[0064] The matching adjustment module is used to judge whether the waveform of the quasi-sine wave pulse electron bunch matches the waveform of the ion beam, if so, then output the current quasi-sine wave pulse electron ...

Embodiment 3

[0068] Based on the same inventive concept, this embodiment discloses a computer-readable storage medium, on which a computer program is stored, and the computer program is executed by a processor to realize any one of the quasi-sine wave generation in the first embodiment. A method of pulsing electron beams.

[0069]In the present invention, the electron beams act on the ion beams with different impact forces at any time in the time domain, and the electron beams have a monotonous change in the impact force of the ion beams at each moment to study and analyze the electron beams on the ion beams in the storage ring. Influence of storage life in. And the present invention changes the interaction mode between the electron beam in the electronic cooling device and the ion beam in the storage ring by closely matching the pulsed electron beam form of the quasi-sine wave distribution and the ion beam form of the Gaussian distribution, and explores the ion beam cluster in the storage...

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Abstract

The invention relates to a method and system for generating a quasi-sine wave pulsed electron beam and a readable medium. The method comprises the following steps of S1, calculating the frequency of sine-wave voltage for modulating the electron beam in an electronic cooling device according to the convolution frequency of an ion beam in an ion storage ring, S2, adjusting the electron beam by using the sine wave voltage corresponding to the frequency obtained in the step S1 to generate a quasi-sine wave pulsed electron beam bunch, S3, acquiring an oscillogram of the ion beam in the ion storage ring, and S4, judging whether the waveform of the quasi-sine wave pulsed electron beam bunch is matched with the waveform of the ion beam or not, if not, adjusting the frequency of the sine-wave voltage, repeating the steps until the quasi-sine wave pulse electron beam bunch matched with the waveform of the ion beam is obtained, and outputting the quasi-sine wave pulse electron beam bunch. The interaction mode of the electron beam in the electron cooling device and the ion beam in the storage ring is changed, so that the technical problems of ion beam loss and short ion beam storage life are solved.

Description

technical field [0001] The invention relates to a method, system and readable medium for generating quasi-sine wave pulsed electron beams, and belongs to the technical field of accelerator ion beam emission. Background technique [0002] The ion storage ring is an accelerator device that improves the intensity, energy and quality of the ion beam and stores the ion beam for a long time. The electron cooling device is a key device for improving the quality of the ion beam in the ion storage ring. The electronic cooling device can reduce the lateral emittance of the ion beam in the storage ring, reduce the lateral size and divergence angle of the ion beam; at the same time, it can also reduce the longitudinal momentum dispersion of the ion beam in the storage ring, and reduce the distance between ions in the ion beam in the storage ring. The velocity difference reduces the longitudinal bunch length of the ion beam. However, when the electron cooling device interacts with the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05H13/00H05H7/00
CPCH05H13/005H05H7/001H05H2007/002H05H2007/004
Inventor 马晓明杨晓东冒立军
Owner INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI
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