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Method and system for measuring beam density distribution of high-current pulse electron beam

A technology of electron beam current and density distribution, which is used in radiation measurement, measurement device, X/γ/cosmic radiation measurement, etc. problem, to achieve the effect of simple structure, solving luminous interference, and ensuring linear relationship

Active Publication Date: 2022-02-15
NORTHWEST INST OF NUCLEAR TECH
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Problems solved by technology

[0011] The purpose of the present invention is to solve the problem that the existing beam current measurement method cannot realize the beam current density measurement of the complete profile of the high-current pulsed electron beam, and to provide a measurement method and measurement system for the current density distribution of the high-current pulsed electron beam

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  • Method and system for measuring beam density distribution of high-current pulse electron beam
  • Method and system for measuring beam density distribution of high-current pulse electron beam

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Embodiment Construction

[0047] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the protection scope of the present invention.

[0048] Based on Cerenkov radiation and high-speed optical imaging, the present invention proposes a measurement method and measurement system for beam current density distribution of high-current pulsed electron beams, which can obtain complete beam current density distribution information on the beam profile.

[0049] The measurement system of the current density distribution of the high-current pulsed electron beam of the present invention comprises a Rogowski coil 6, a Cerenkov radiation conversion target 8, a rotary table 15, a high-speed imaging unit and a data processing unit; the Rogowski coil 6. The Cerenkov radiation c...

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Abstract

The invention provides a method and a system for measuring the beam density distribution of a high-current pulse electron beam, and solves the problem that the beam density of a complete section of the high-current pulse electron beam cannot be measured by an existing beam measurement method. The method comprises the following steps of: 1, manufacturing a Cherenkov radiation conversion target; 2, establishing a measurement system; 3, collecting a light spot image; 4, obtaining the relative intensity distribution of Cherenkov radiation through the gray value distribution of the light spot image; and 5, acquiring beam density distribution. According to the method, the design process of the Cherenkov radiation rotating target is given, so that a basis is provided for realizing beam density distribution measurement. Meanwhile, the method provides a beam spot image processing method, gray value distribution of the beam spot image is converted into beam density distribution through the method, and therefore beam density distribution measurement on the complete section of the high-current pulse electron beam is achieved.

Description

technical field [0001] The invention belongs to the technical field of pulse power, and in particular relates to a measurement method and a measurement system for the current density distribution of a high-current pulsed electron beam. Background technique [0002] In the pulse power device, diodes are used to generate high-current pulsed electron beams, and the electron beams bombard the anode target of the diodes to generate X-rays. The beam intensity, beam density, and spatial distribution of the high-current pulsed electron beam are directly related to the X-ray radiation field intensity distribution. The energy of the high-current pulsed electron beam can reach millions of eV, and the beam intensity can reach hundreds of thousands of A. Due to the high electron energy and high electron beam intensity, the beam current measurement equipment is extremely vulnerable to damage or failure due to electron bombardment, and the measurement environment The medium X-ray penetrat...

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Application Information

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IPC IPC(8): G01T1/29
CPCG01T1/2921
Inventor 汪金华孙剑锋蔡丹孙江张金海杨海亮
Owner NORTHWEST INST OF NUCLEAR TECH
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