Method for measuring beam divergence angle of high-current particle beam based on one- dimensional carbon fiber composite material

Abstract

The present disclosure discloses a method for measuring a beam divergence angle of a high-current particle beam based on a one-dimensional carbon fiber composite material, relating to the field of high-current particle beam diagnosis. The method includes: collecting infrared images according to experiment requirements by setting parameters of an infrared camera; obtaining original infrared images and temperature data files before and after beam current bombardment; converting an array file containing temperature information into an RGB picture format; performing perspective distortion correction on the acquired infrared images through a one-dimensional CFC diagnosis calorimeter and a geometric installation position of the infrared camera; converting the corrected image files into csv data format files; performing subtraction on a series of temperature data; selecting rows and columns to be analyzed for the plurality of csv data format files, retrieving a maximum value of temperatures within an area, and performing normalized Gaussian fitting; and analyzing a width at a 1/e height of the fitted Gaussian curve, and calculating the beam divergence angle according to a formula. The present disclosure provides a basis for operation parameter adjustment of an ion source and safe and stable operation of a system.